Isx cummins low oil pressure

Hey Sir, im having an issue with my Peterbilt with cummins isx. Getting the following code, engine oil rifle pressure code 415. Driver says when he goes over 65 the code comes up on the dash and shutdown code flashes. Do you think its needing an oil change with new filter? Currently has 14000 on oil.

No oil pressure: Ron & Kerrie: Cummins Engines: 10: 05-08-2015 08:56 AM: Low oil pressure | erratic oil pressure | inconsistant oil pressure: GlennLever: Cummins Engines: 45: 08-28-2014 08:24 AM: Oil pressure gauge reading incorrectly? captncrunch: Alpine Coach Owner's Forum: 6: 05-24-2014 04:58 PM: oil pressure sending unit: malk415: Winnebago ...Cummins..22-26 psi with the engine temp at 180 oil temp..oil pump. 2007 ihc 9900 500hp isx cummins has low oil pressure with high oil temp. The highest oil psi is 29 but runs 22-26 psi with the engine temp at 180 oil temp will be 220 and if you have heavy loads the o … read more. DR.Cummins.This is an OEM Cummins Replacement Pressure Temperature Sensor 4921475 for the 2000 to 2003 ISX Cummins has an engine oil pressure sensor that is used to measure the engine’s oil pressure. A properly functioning oil pressure sensor is vital because if the engine is operated with little or no oil pressure, the engine will seize.A legacy of proven performance goes into every Cummins X Series engine. This proven platform has been delivering maximum uptime and productivity, setting new standards of performance in the toughest, most challenging operations around the world. Cummins current ISX engines are the backbone of the demanding North American Class 8 trucking market.It has three pins that mate up to the original Cummins connector. The sensor cost about $95 and the part number is 4326849. It does give actual pressures to my Silver Leaf and tracks surprisingly closely to my dash oil pressure gauge, which is a completely separate gauge and sending unit.

Friday, July 20, 2018 Fault Codes CUMMINS GTA38 K38 K50 QSK38 QSK50/60 CM850, Fault Codes CUMMINS Signature ISX QSX15 CM570. SPN100 FMI18 Engine Oil Rifle Pressure - Data Valid But Below Normal Operating Range - Moderately Severe Level ... -Low oil pressure. • Incorrect oil level.-Degraded, diluted or incorrect engine oil. Read More: SPN 110 ...Attached are details of defective liners leading to high oil consumption. Cummins usually addressed out of warranty issues using "Policy" dollars. If outside base warranty then easy to get "Policy" help at 75 percent up to 4 years and 400,000 miles or 50%-25% at up to 500,000 miles. ... The problem is the were using a 3 stone hone on the liners ...Hi I have Cummins isx engine oil pressure come low ven oil temperature more 235.can you tell me what I do. Mechanic's Assistant: What is the complete model and serial number of your machine? 79344637 engine #6k. 4. Location:Roaring Spring, PA. 1 Vehicle. Posted January 23, 2014. This issue surfaced at a Technology and Maintenance Council (TMC) meeting several years ago. Late model Cummins ISXs had an issue with oil and fuel filter plugging. They "blamed" it on the oil and fuel. Let the finger pointing begin continue.I want to personally thank everyone who has donated to the forum recently. It helps pay for the $790/month internet bill that the forum consumes.

cummins ISX15 oil pressure Discussion in 'Trucks [ Eighteen Wheelers ]' started by mitmaks, Dec 12, 2015. Page 2 ... If you are running ISX, oil pressure will be your smallest problem. sirscof, Dec 13, 2015. sirscof, Dec 13, ... Also replace oil pressure sending unit just to help narrow it down.Low/erratic fuel pressure will not necessarily throw a code. Most engines don't even use a fuel pressure sensor. Send me the engine serial number so I can do some research on Cummins QuickServe and see if this thing even has one. If in fact this thing is de-rating itself, it should be at least turning on a check engine light at the same time.Volvo VNL Semi Truck & Volvo D13, Cummins ISX etc. Engine FAQs; Freightliner Cascadia / Detroit DD13, DD15, DD16 & Cummins ISX etc. FAQs; Kenworth T680 / Paccar MX-13, Cummins ISX etc. FAQs; Kenworth T800 / Cummins ISX Engine FAQs; Kenworth W900 / Paccar MX-13, Cummins ISX etc. FAQs; Peterbilt 389 / Cummins ISX, Paccar MX-13 etc. FAQsAttached are details of defective liners leading to high oil consumption. Cummins usually addressed out of warranty issues using "Policy" dollars. If outside base warranty then easy to get "Policy" help at 75 percent up to 4 years and 400,000 miles or 50%-25% at up to 500,000 miles. ... The problem is the were using a 3 stone hone on the liners ...Worn or damaged oil pick-up tube o-rings: The o-rings that connect the oil suction manifold to the oil pump can become worn or damaged over time, which can cause low oil pressure. Replacing the o-rings is usually the best way to fix this problem. These o-rings along with the oil pump are both common issues on the DD series engines.Here's what you need to know. The oil pressure in a Cummins ISX engine should be between 60 and 80 psi at idle. If it's lower than that, there could be an issue with the engine. What Causes Low Oil Pressure at Idle Diesel? There are many potential causes of low oil pressure at idle in a diesel engine. Some of the most common include: 1.

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The Cummins Isl9 oil pressure sensor is located at the rear of the engine, on the right side. This sensor helps to monitor and regulate the amount of oil pressure inside your engine, ensuring that it remains within optimal levels for a healthy engine operation. Regular maintenance should include checking this sensor for any wear or damage to ...Watch out for common signs of decreased engine performance such as a reduction in fuel economy, loss of power, and engine stalling. Warning light on the instrument panel turns on. This is one of the first and most common signs of low engine oil pressure. The latest car models have sensors connected to a warning light.This is an OEM Cummins Replacement Pressure Temperature Sensor 4921475 for the 2000 to 2003 ISX Cummins has an engine oil pressure sensor that is used to measure the engine’s oil pressure. A properly functioning oil pressure sensor is vital because if the engine is operated with little or no oil pressure, the engine will seize.You should change the crankcase filter on ISX Cummins regularly. It is recommended to change it every 15,000 to 25,000 miles or as specified in the manufacturer's guidelines. Keeping a clean filter helps maintain engine performance and prolong the life of your Cummins engine.18-20 psi at idle is normal for an ISX with 35-40 above 1000 rpm depending on oil temps. Specs are: Oil Pressure, 15 psi (Idle), 35-40 psi (Rated RPM) It doesn't …

15716 posts · Joined 2006. #4 · Feb 18, 2017. Driver side between the ECM and the back of the engine up under the intake, IIRC. 05 QC LWB 4x4 Auto 3.73 LSD, IssproEV2's, Performance 48RE Opie TransGo , Smarty Tuned BBI Injected. donniepatt.When idling, the fuel pressure gauge goes all the way up and you feel the engine running rough. I replaced the fuel pump about 2 years ago, bought directly at Cummins. Fuel pump 2872399. Summary, when idling (not touching it at all) fuel pressure claim all the way up, truck runs bad, fuel pressure goes down, truck runs fine again.It will run at 600 RPM , drop about 5-15 , pick up to about 607, or so , drop about the same , etc. worse when the engine is cold. As to blow by , crankcase is vented to outside air , and , considering the miles on the engine ( 850,000) , it doesn't seem excessive. pawpaw1, Feb 3, 2013. #9.6 posts · Joined 2016. #1 · Aug 7, 2017. hi i have a 1993 cummins in my dodge w200 and it have low oil pressure, When it's cold it have 65-70 psi, and when its hot it have 5-10psi at idling, i have a mechanical oil gage, So I decided to rebuild the engine, the old mains and rod. bearing Was pretty worn out but the crank Looked really good no ...Cummins..22-26 psi with the engine temp at 180 oil temp..oil pump…. 2007 ihc 9900 500hp isx cummins has low oil pressure with high oil temp. The highest oil psi is 29 but runs 22-26 psi with the engine temp at 180 oil temp will be 220 and if you have heavy loads the oil temp will be 250. The oil pump has been changed and made no …When troubledhooting low oil pressure you MUST isolate the engine from everything else. Remove the oil pressure sensor hook a gauge to the engine and check.double check the oil level if you overfilled it will aireate the oil and cause. ... 2007 ihc 9900 500hp isx cummins has low oil pressure with high oil temp. The highest oil psi is 29 but ...the Cummins gerotor pump is a high volume low pressure low head pump. it is easily damaged by metal cuttings or running dry. the flow of engine oil in the 5.9 Cummins is. 1. crankcase to. 2. oil pickup to. 3. gerotor oil pump to. 4. pressure regulator valve to. 5. oil cooler to. 6. filter bypass valve to.Cummins..22-26 psi with the engine temp at 180 oil temp..oil pump. 2007 ihc 9900 500hp isx cummins has low oil pressure with high oil temp. The highest oil psi is 29 but runs 22-26 psi with the engine temp at 180 oil temp will be 220 and if you have heavy loads the o … read more. DR.Cummins.

Mar 20, 2015. #1. Have 600 horsepower cummins 380000 miles just had oil change start the day with 40 oil pressure but during the day oil pressure kept getting a little lower finally started pulling a load up the mountain oil pressure was down to 20 and loosing power finally got to the top and the high exhaust temperature system light came on ...

Cummins ISX Low Boost due to Holset VGT HE551VE Sliding Plate damage. 8 psi less.Music: Free DrivingURL: https://icons8.com/music/Low oil pressure when running. I just rebuilt my Cummins isx 435 sp … read more. Daniel Wilson. Associate Degree. 7,141 satisfied customers. I have a 2005 international 9200 isx 435 hp. The average. Hi, i have a 2005 international 9200 isx 435 hp. The average coolant temperature on the gauge is always around 210 degrees even when parked ...Part Number: 4921517 Specification: Material: Metal, Plastic Condition: Brand New Color: black , Gold Tone, Blue Voltage: DC 12V Pin Number: 3 Thread Size: M14 x 1.5 Size: 61x29x27mm 2.40x1.14x1.06(L*W*H) Applicable models: Fits for Cummins ISX ISM ISX11.9 ISX15 Engine Fits for Peterbilt 388 2008-2011 Fits for Peterbilt 385 2003-2004 Fits for Peterbilt 385 2006-2007 Fits for Peterbilt 387 2003 ...The low oil pressure light. I have a 2004 379 Pete daycab. The low oil pressure light and buzzer stay on even though I have about 40PSI on the gauge in dash when running. Wayne. Journeyman. Vocational, Technical or Tra... 6,177 satisfied customers. I have a 2004 International 9200i with the Cummins ISM. The.2008 cummins isx 15 the oil pressure is dropping random, if i turn off the engine turn back on after 10 sec everything is normal for a random time then again drops, change the oil filter helps for 3000-7000 miles than the same thing, work done : last 10000 miles new oil pressure sensor new crank bearing, new oil pump , 50000 miles egr valves turbo actuator, 100000 miles all dpf system new with ...Nov 2, 2023 · Detailed Instructions On Finding The Oil Pressure Sensor In The Cummins Isx 15 Engine. To locate the oil pressure sensor in the Cummins ISX 15 engine, follow these steps: Locate the rear of the engine. Identify the transmission case. Find the fuel filter and ECM behind it. The oil pressure sensor should be located in the middle of the block on ... 216. 94. Jul 28, 2016. Powdersville, SC. 0. i have an 06 ISX and I have a continuous issue with oil pressure. The main issue being my oil viscosity over time won't hold the pressure. I have to change oil filters between changes. My oil temp gets up to between 220-230 when running with a 30,000 lb load.If I had a 5.9 with low oil pressure the FIRST thing I'd check is the pressure regulating valve located in the oil filter adapter housing. If a piece of trash gets in the valve and sticks it open or even partly open oil press will drop. If the engine has many miles on it I'd put in a new regulating valve and spring.

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The oil pressure sensor on an ISX Cummins engine is located on the left side of the engine, underneath the IFSM and behind the fuel filter. ... The symptoms of a bad oil pressure sensor include low oil pressure readings, oil pressure light or warning message on the dashboard, and engine performance issues. It is important to get the …WARNING!!: ⚠️⚠️⚠️Always use the proper tools and safety equipment to perform this job. Failure to perform the job correctly can result in personal injury or ...What causes low oil pressure Cummins ISX? This can be a number of things, some are general answers, some are more specific to the model and year of the Cummins ISX …0. Hello, I have a 2016 kenworth t680 with Cummins isx 15 with an oil temperature problem. I already change oil temperature sensor, water temperature sensor, water pressure sensor, water thermostat, oil pump, engine bearing set. And I still got the same issue. It only occurs when I am pulling heavy because whenever I am empty no matter how hot ...Trent389 Bobtail Member. I have a 2014 389 Peterbilt with a 550 Cummins ISX. Oil temp is running way too hot. 250 plus when loaded. Truck is not being used until this is resolved. The rad was replaced a month ago and coolant temp rarley goes above 195. Stays about 180 most of the time.Yes I am sure it is too low and I have been to Cummins about it because the truck is new and under warranty. They won't give me a straight answer and reckon its running alright. ... Fan is going On for coolant temperature, oil temperature, AC freon pressure. Snailexpress, Apr 3, 2016. Snailexpress, Apr 3, 2016 #8. Mar 30, 2019 #10. fordtruckcs ...Yes I am sure it is too low and I have been to Cummins about it because the truck is new and under warranty. They won't give me a straight answer and reckon its running alright. ... Fan is going On for coolant temperature, oil temperature, AC freon pressure. Snailexpress, Apr 3, 2016. Snailexpress, Apr 3, 2016 #8. Mar 30, 2019 #10. …Cummins..22-26 psi with the engine temp at 180 oil temp..oil pump. 2007 ihc 9900 500hp isx cummins has low oil pressure with high oil temp. The highest oil psi is 29 but runs 22-26 psi with the engine temp at 180 oil temp will be 220 and if you have heavy loads the o … read more. DR.Cummins.The Cummins Pressure Regulator Valve 4009956 is used primarily on Euro III 15 liter ISX/QSX engines. Specifications. Shipment Height. 1 In. Shipment Length. 4 In. Shipment Width. 3.75 In. ... Cummins Pressure Sensor. Part # 4954245. $466.27. Add to cart. Save to My Garage. ... Cummins Oil Gauge Tube. Part # 4948168. $65.66. Add to cart. Save to ...BUY THIS Cummins ISX Oil Pump Assembly TODAY!!! https://tinyurl.com/2n9j64vyGet the right oil pump assembly for your engine & speak to one of our ASE Certifi...The oil pressure for a 6. 7 Cummins ISB is measured by an oil pressure sensor located on the outside of the engine block. The sensor is connected to a pressurized oil gallery to measure the current oil pressure produced by the engine. It is positioned in the middle of the block on the left side and is used to display oil pressure on the … ….

Low oil pressure can indicate a problem with the oil pump or other engine components. Inspecting the oil pressure sensor is another important step. The sensor provides valuable information about the engine's oil pressure levels. ... Read More Cummins ISX Oil Leak Driver Side: The Ultimate Guide to Identifying and Resolving the Issue. 6.7 cummins.Nov 11, 2023 · The normal oil pressure for a Cummins ISX at idle should be between 15-40 PSI. If the oil pressure is consistently below this range, it may indicate a problem with the oil pump, oil pressure sensor, or a dirty oil filter. Low oil pressure can lead to increased temperatures, noisy engines, and potential engine damage. Perform the following steps for the appropriate engine (ISX15 CM2250, QSX15 CM2250 ECF, ISX12/ISX11.9 CM2250, or QSX11.9 CM2250 ECF): Replace the fuel pump per one of the options below: For ISX15 CM2250 engines with two-cylinder pumps and fuel pump gear pump top mount fuel lines, there is a cost effective option to use a fuel pump short block ...Fix up your failing lubrication system with a Oil Cooler Kit 4955831 from Highway and Heavy Parts. Don’t risk the health of your ISX; buy high-quality aftermarket 4955831 Oil Cooler Kit from America’s trusted diesel engine parts supplier. At Highway and Heavy Parts, you’ll get a Oil Cooler Kit manufactured in an ISO 9001:2015 certified ...High Quality Oil Pressure Sensor * Plastic Brass Material * Brass Rectangle Female Connector * 3 Connector * Female/Male Connector/Terminal * Wire Harness Not Included * Sold Individually * Warranty On Oil Pressure Sensor Against Defects In Workmanship & Material From Date Of Purchase ** High Quality Aftermarket Replacement Part (Not OEM) *** *** Replaces OEM Number(s) 4921517 * This Item Is ...Joined: Jun 2013. RE: CM871 fuel pressure delivery. if it is losing its prime or getting air in the fuel system, the sound of the electric pump will change ad the air goes thru it. You should listen for the electric pump changing pitch or sound... getting louder.softer, etc. as it runs for its 2 minutes with the key on and engine not running.ISX12N (2018) The 2018 ISX12N continues the evolution of emissions-leading natural gas engines from Cummins. Certified to the California Air Resources Board and Environmental Protection Agency's (EPA) Optional Low NOx emissions standard of 0.02 g/bhp-hr, it has 90% fewer NOx emissions than the current North American EPA standard. With 400 hp ...Oil Pressure Issue on Cummins ISX15 - How to Fix it? Cummins isx15 oil pressure sensor replacement.#oilpressuesensor #cumminsisx Playlist Recommendation: Tru... Isx cummins low oil pressure, I have a 2009 isx cm871 shut it off had good oil pressure. Started it up oil pressure is at zero changed sensor no - Answered by a verified Technician ... i have a cummins isx cm871 im getting oil in coolant even when engine is off it consume coolant also on the exhaust manifold i fount oil coming out of the exhaust manifold what can cause the ..., Heating Oil Price: Get all information on the Price of Heating Oil including News, Charts and Realtime Quotes. The heating oil price is tied to the development of the price of crud..., 46. 13. Jan 27, 2012. Ontario. 0. I have been scratching my head working on an ISX. About every 2500miles the oil pressure goes down to about 20psi. Replace the oil filter and pressure pops back up. I have seen this before, but it's usually caused by extended oil drain interval, or something mechanically wrong., Oil Pressure Issue on Cummins ISX15 - How to Fix it? Cummins isx15 oil pressure sensor replacement.#oilpressuesensor #cumminsisx Playlist Recommendation: Tru... , Volvo ISX Cummins low oil pressure. the problem was the oil filter., 1215 posts · Joined 2012. #3 · Jul 12, 2019. Low oil pressure should not cause low or rough idle. The other way round, low idle will show low oil pressure. Would be looking at the cause of the low idle. Cheers Steve. 86 F350 CC dually, RTO610, 3.32 final gears 93 5.9 (ex F600) basically stock,Custom fuel pin, Aftermarket AFC spring, re-set ..., Detailed Instructions On Finding The Oil Pressure Sensor In The Cummins Isx 15 Engine. To locate the oil pressure sensor in the Cummins ISX 15 engine, follow these steps: Locate the rear of the engine. Identify the transmission case. Find the fuel filter and ECM behind it. The oil pressure sensor should be located in the middle of the block …, Posts: 2,312. Joined: Jan 2018. RE: Low oil pressure, again. Or its at that mileage where its all sooted up. Oil passages maybe clogged. So changing the oil a lot more frequently may show positive results. Like a couple 5000 mile oil changes and extra filtration. 30-35 psi on a fresh oil change is a bit low., 2008 cummins isx 15 the oil pressure is dropping random, ... Hello, my name is ***** ***** have a 2010 Volvo with a ISX cummins. We are experiencing low oil pressure after engine gets to full operating temp. The laptop is showing a fluctuating pressure of about ..., Customer: i have 550 isx cummins that was remaned by cummins 60000 miles ago. ever since new engine was installed the truck has low oil pressure,oil gets 250 on pull,engine temp stays normal. truck wi … read more, Worn or damaged oil pick-up tube o-rings: The o-rings that connect the oil suction manifold to the oil pump can become worn or damaged over time, which can cause low oil pressure. Replacing the o-rings is usually the best way to fix this problem. These o-rings along with the oil pump are both common issues on the DD series engines., Here are all the Cummins ISX codes available for the Cummins ECM. These Cummins trouble codes pertain to ISX engines built with the EGR system, but pre-DPF (2002 - 2006). Cummins ISX Codes 111-500. 111 Electronic Control Module Critical Internal Failure - Bad Intelligent Device or Component. 115 Engine Magnetic Speed/Position Lost Both of Two ..., You should change the crankcase filter on ISX Cummins regularly. It is recommended to change it every 15,000 to 25,000 miles or as specified in the manufacturer's guidelines. Keeping a clean filter helps maintain engine performance and prolong the life of your Cummins engine., The oil pressure relief valve in a 5.9 Cummins engine is located at the oil pump outlet. It opens when the engine oil pressure reaches a certain value and ... Low oil pressure in a diesel truck can be caused by low oil levels, burning by worn piston rings, evaporation, or an unknown leak. ... The oil pressure at idle for a Cummins ISX engine ..., (05-23-2018 ) Signature620 Wrote: The pressurised oil is supposed to travel to the head from the block, then to the cams, then to the rockers. So when a cam bearing spins it will increase it's diameter and/or shift forwards or backwards. This allows oil that would normally be under pressure between the cam and rockers to be released into the overhead, so much that the oil pump can't keep up ..., Technical Service Bulletin. Subject. High Pressure Fuel Pump Performance Test and New Service Tool to Assist in Troubleshooting Fault Code 559. Warranty Statement. The information in this document authorizes specific changes to the repair practice for failures covered under product warranty coverages. Contents., According to Cummins minimum allowable oil pressure at idle at operating temperature is 15 psi. Governed speed with no load is 35 to 40 psi. Animosus, Dec 12, 2015. ... If it goes too low you will know. My '05 565 ISX ran 18-22 at an idle (operating temp) and 38-42 going down the road. I sold it with 481,000 miles on it., OSKYUO 4921517 Engine Oil Pressure Sensor Compatible with Cummins ISX ISM ISX11.9 ISX15 Freightliner Peterbilt Kenworth International Mack Western Star Volvo 4921744 4358810. ... No more low oil pressure light. Read more. Helpful. Report. Lem Prince . 5.0 out of 5 stars Five Stars. Reviewed in the United States on February 22, 2016. Verified ..., This is an OEM Cummins Replacement Pressure Temperature Sensor 4921475 for the 2000 to 2003 ISX Cummins has an engine oil pressure sensor that is used to measure the engine’s oil pressure. A properly functioning oil pressure sensor is vital because if the engine is operated with little or no oil pressure, the engine will seize., 1100 posts · Joined 2009. #3 · Jan 28, 2014. Be aware that the gauge we have is not really a gauge. The oil sender is an on/off switch which I think is set around 6-10 psi. If oil pressure is above the setpoint, the gauge reads "normal" which is a bit over 40. If the oil pressure drops below the setpoint, the gauge drops to zero., Hi this is Wili I have my Volvo truck 2015 isx Cummins serial number 79771991 / I having low oil pressure I remplace the oil pressure sensore it was looking like oil i the conector but after I running the truck for like 30 minutes start doing the same problem. ... Hi all,Trying to find the location of a oil temp sensor on a Cummins ISX, the ..., Cummins ISX Codes: A complete list of all fault codes for Cummins ISX engines (2003 & later). ... Voltage Below Normal, or Shorted to Low Source 143 Engine Oil Rifle Pressure - Data Valid but Below Normal Operational Range - Moderately Severe Level 144 Engine Coolant Temperature 1 Sensor Circuit - Voltage Above Normal, or Shorted to High Source ..., Blog.Teknisi Tuesday, December 22, 2015 Fault Codes CUMMINS ISB ISC ISL ISBe ISDe and QSB3.3 CM2150. SPN157 FMI18 (Injector Metering Rail 1 Pressure - Data Valid but Below Normal Operational Range - Moderately Severe Level) Fault Code: 559. Fuel Rail Pressure Sensor. CODES: Fault Code: 559. PID (P), SID (S): P157., Friday, July 20, 2018 Fault Codes CUMMINS GTA38 K38 K50 QSK38 QSK50/60 CM850, Fault Codes CUMMINS Signature ISX QSX15 CM570. SPN100 FMI18 Engine Oil Rifle Pressure - Data Valid But Below Normal Operating Range - Moderately Severe Level ... -Low oil pressure. • Incorrect oil level.-Degraded, diluted or incorrect engine oil. Read More: SPN 110 ..., Hawks think more sanctions are needed. Oil prices have undercut Iran’s current and expected earnings by billions of dollars, and there are signs that the hit could get worse—Saudi ..., It will run at 600 RPM , drop about 5-15 , pick up to about 607, or so , drop about the same , etc. worse when the engine is cold. As to blow by , crankcase is vented to outside air , and , considering the miles on the engine ( 850,000) , it doesn't seem excessive. pawpaw1, Feb 3, 2013. #9., Dealing with low water pressure in your home? This guide explains the potential underlying problems and five simple, effective solutions for fixing them yourself. Expert Advice On ..., 2015 isx 15 cummins with fuel in oil. just installed. 2015 isx 15 cummins with fuel in oil . just installed injector cup rings because of cups leaking anifreeze in fuel replaced orings on injector and had code for fuel rail pressure did update on fuel pump and now fuel in oil. Answered in 2 minutes by:, IMA KEEP IT REDNECK. Dec 28, 2016. #3. OK from your local diesel technician, your actuator on your vgt could be the issue. Fuel filters and air filters can also cause it. And exhaust or ege leaks. Plugged DOC or DPF. All these are options. Really hard to tell with out being connected to it and seeing whats going on in the engine., 5 02-11-2021, 07:04 AM. Hey, try removing suction line from pump and hook up rubber hose with clamp and run it into a jug of def. If that works then I would inspect suction line and pick up in tank for cracks. Also remove doser when doing pressure test to make sure it's not dumping the pressure out of the nozzle. Reply., What causes low oil pressure Cummins ISX? This can be a number of things, some are general answers, some are more specific to the model and year of the Cummins ISX …, Joined: Feb 2016. RE: isx will not start cranking low fuel pressure. I believe you need a new fuel pump. They will just "go out" all of a sudden. I know a guy who had the exact problem you have. His psi was 70 when he was cranking the engine over and you are at 68. The pressure should be over 100psi., I stopped by my local Cummins shop and purchased a new crankcase filter. After changing oil and getting it up to operational temp blow by was barely visible. I took another video and soon as YouTube uploads it I'll post the results. 2002, six speed, 4x4, FASS Ti, fuel gauge, Edge, Timbo APPS, new DAP VP44 w/132,000.