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Diesel fuel in engine oil engine runs ok an there is no dtc

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Check your turbo please.the door in turbo sometimes gets shut or oil cooer goes bad and can result in runaway motor. does it smoke real heavy???? the turbo may be going bad!! try 1st changing oil and fuel filters. if it continues to smoke bad, suggest you take in for service. than you for asking fixya.com!!

Posted on Nov 13, 2010

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Posted on Jan 02, 2017

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Astra randomly cuts out at lights and engine May be sluggish,randomly code is P0093,FUEL RAIL SENSOR?


This diagnostic trouble code (DTC) is a generic powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model.
When the computer sets this code it senses a large fuel leak in the high pressure section of the engine. The ECM in a diesel always monitors and controls the fuel pressure from the fuel injector pump to the injectors as long as the engine is running.
To set a code P0093 the ECM must sense a sudden large drop in fuel pressure within the system. This drop in fuel pressure can be internal, external or caused by a faulty sensor signal to the ECM.
When this happens, the ECM sets the code, goes into fail-safe mode which will suspend the fuel injector pump operation and allow one minute to pull over before it shuts the engine down. It will remain in fail-safe mode until the key is off.
The engine may run again but investigate the problem first. This problem will not correct itself or go away. The engine could shut down at any time or speed.
Unlike gasoline engines with fuel injection pressures of 30 to 50 PSI, diesel engine fuel pressure runs up in the Megapascal range, from 4,500 to 30,000 PSI. It takes very high fuel pressure to force fuel into the high compression cylinder of a diesel.
As you progress in diagnosing the problem be always mindful of the fuel pressure when the engine is running. It is ridiculously high! You have a code P0093 stating there is a large fuel leak in the system. Use caution when sticking your nose under the hood of a running engine with this code, or wrenching on the fuel system.
Symptoms Symptoms of a P0093 diagnostic trouble code may include:
  • Code set and malfunction indicator lamp illumination (check engine light)
  • Engine will enter fail-safe mode and shut down within one minute
  • Possible large loss of power above idle
Causes Potential causes for this DTC include:
  • Fuel injector failure
  • Fuel line common rail leak
  • Fuel pressure sensor malfunction
  • Fuel pump or lift pump failure
  • Fuel heater constantly on
  • Fuel temperature sensor failure
  • Leaks at any point in the high pressure circuit
  • Electrical connector corrosion or seating problems
  • Fuel pressure regulator malfunction
  • Fuel filter plugged dropping the fuel line volume
  • Injector pump leak
  • Fuel control actuator failure
  • Cascade overflow valve malfunction
  • Short in the electrical harness at the injectors or to the ECM
  • Fuel pressure limiting valve
  • ECM failure
Diagnostic Steps & Possible Solutions
  • Start with the engine off and doing a walkaround inspection for obvious fuel leaks between the fuel tank and the engine.
  • Lift the hood and check the oil and level. If the oil level has risen, smell the oil. If it is heavily contaminated by fuel, an injector most likely failed in the open position. Do not start the engine again until the oil and filter is changed.
  • Look under the hood for leaks. Start at the injector pump and follow the fuel lines to the fuel injector rail. Look at the injectors for signs of leaks.
  • Pull the electrical connector off the fuel pressure sensor and look for fuel in the connector. A failed sensor will allow fuel up through the sensor into the connector.
  • Check when you last changed the fuel filter. A plugged fuel filter will drop the volume enough to set the code.
  • Check all electrical connectors on the sensors and wiring harness to the injectors for missing insulation, corrosion or loose connections. If no obvious leaks have been found, go online and look up the TSBs (technical service bulletins) for your year and make vehicle. Diesels have no lack of problems as the TSBs will indicate.
Look for the code and associated repair procedures and probable causes. Chevy and Dodge reads like a book. The TSBs will include recalls on various items as well.
Look at your warranty. Most diesel engines have long warranty periods for various items. Many cover injectors for 7 years or better and 200,000 miles.
The dealer is the next step if no deficiencies are found. Checking the fuel pressure and the operation of the ECM takes special tools for a diagnosis.
Tip: Diesels outlast a normal gasoline powered engine when properly serviced. But they demand service at specific intervals to operate properly. There is no free lunch with these. Do not use any seals or gaskets that are not OEM. The pressures and temperatures call for the use of certain materials resistant to these temperatures and pressures.

Jul 12, 2016 | Opel Astra Cars & Trucks

1 Answer

Obd2 code p1237 on honda civic diesel after engine malfunction light went off car goes into limp mode especially when engine is cold what does obd2 code p1237 mean what is the fault car runs ok then


DTC ) fault code ) - P1237:
Boost Control Positive Deviation

This fault code can be set when the fuel tank is empty or the specified fuel is not used. ( supermarket fuels etc have been known to cause this.. )

It can also be attributed to a turbo fault - if the fault is no turbo boost.

Jan 20, 2015 | Honda Cars & Trucks

1 Answer

I have a 91 f350 7.3 liter idi. It will not start


cranks ok , and fast?
after checking all fuses. (the FSM shows correct fuse)

International Harvester IDI (from Indirect Injection) engine is a 4-stroke 8-cylinder Diesel engine used in International Harvester trucks,
like all diesels check fuel filters first. (service)
then make sure glow plugs work. (fsm covers this)
then scan it EFI for DTC errors. got errors?
direct injection uses EFI.

IF DIY, you need the book, I promise.....
its not simple like old diesels were.

May 03, 2014 | Cars & Trucks

1 Answer

Fuel in engine base oil


I'm not much on diesels, but for gas engines the most common source is a leaking injector or fuel pressure regulator.

Jul 01, 2013 | 2001 Chevrolet Silverado 2500HD

1 Answer

1999 dodge 3500 5.9L diesel dtc's p0251 ,p1688


P0251 Injection Pump Fuel Metering Control "A" (Cam/Rotor/Injector)
P0252 Injection Pump Fuel Metering Control "A" Range/Performance (Cam/Rotor/Injector)
P1688 Metering Oil Pump Stepping Motor Circuit Malfunction
MB Star V2013.03

May 04, 2013 | Cars & Trucks

2 Answers

Buying a 1995 f25 diesel from a frien and he ran unleaded gas in it and now it blows alot of white smoke


blown head gasket an the white smoke is the truck burning off the antifreeze thats leaking into oil big job to repair 1500$at a cheaper shop...bad to run without fixing due to antifreeze thins oil and internal damage to engine will result....thanks for using fix ya.good luck friend never ran gas a diesel will not run on gas and will shut down almost imeditely if clean diesel is dirtied in any way...

Apr 02, 2011 | 1995 Ford F250

2 Answers

5.9 diesel, 1999, cannot hear the fuel pump


just change the fuel pump they tend to go out fast in cold weather

Jan 17, 2010 | 1999 Dodge Ram 2500 4WD

2 Answers

Just got an 1998 Isuzu Wizard (diesel), some times


It sounds like the fuel is gelled, is it cold where you are and what are running for fuel? If your in freezing weather you should be running blended fuel, straight No.2 will gel at about 25 degrees (F). Take a hair dryer or heat gun and warm the fuel filter up. Or if you can get in warm garage and get it started thin the diesel with kerosene, about 2 gallons to 20 gallons of diesel. Then drive it for at least five miles so the kerosene gets circulated through the system. I've used gasoline to do this too, but only use about 1 gallon to 20 gallons of diesel.

Jan 08, 2010 | 1998 Isuzu Trooper

1 Answer

I have a 2004 excursion diesel drove it all day stoped at a clients turned it off for 20 min came out and wont start the starter is going but its just not firing could it be a fuse I dont smell fuel but I...


Ok well the glow plugs on a diesel have nothing to do with the engine firing. All the glow plugs do is heat up the combusion chamber on cold starts. Diesel engines fire using high compression. An oxygen sensor won't cause the vehicle to not start and your diesel doesn't have one of those anyways. It could be a fuel related issue. (pump, line, pressure etc.) Have you it scanned for engine DTC's? But based on your knowledge of your diesel vehicle i'm going to suggest you take it to a shop.

Dec 19, 2009 | 2004 Ford Excursion

1 Answer

Engine light comes on and wont go faster than 90 kms per hour back speed off and light gos off


the engine light is a run safe feature. it could meen low oil, fuel blockage, low coolant and, if diesel, water in fuel filter.
Check all levels, and if ok, it colud be something more serious like oil pump, water pump or oil filter.

Sep 26, 2009 | 2003 Isuzu Rodeo

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