Question about 1998 Chevrolet Express

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DIESEL WON'T START HAS P0251

6.5 DIESEL ALL READY SPRAYED WD40 TO START VEHICLE AND NO GO, THE CODE SAY IT'S A FUEL METER BUT WON'T GIVE ME A DIAG CHART ANYWHERE.

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  • 256 Answers

Borrow a repair manual for vehicle from a libarry,

Posted on Dec 05, 2012

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Posted on Jan 02, 2017

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SOURCE: I have a 1991 Chevy Cavalier 3.1 6 cyl. Was given

you may be getting fuel but you are starving the cylinders from it. after sitting this long, i would replace the injectors because they will corode inside after 7 years. agood injector cleaner might work but they are probably too far gone. you might have sent a lot of corosion from the fuel tank the first time you ran it & that will add to total shut down of the fuel injectors. also check your oil pressure, or it may jump on timing due to stiff cam bearings. depending on klts, it would be good to use slightly heavier oil grade. you may also want to check your ignition coil for proper supply to plugs. bin there, dun that.

Posted on Nov 25, 2011

  • 12 Answers

SOURCE: 1985 corvette cranks but won't

Check to see if you have spark, if you do, and still it does not start, then you may think that fuel is not getting to it. At this point, use some starting fluid and spray it at the throttle opening. That should start it for a few seconds and give you the answer.
Joe.

Posted on Dec 08, 2011

emissionwiz
  • 76630 Answers

SOURCE: now car won't start, checked fuses all ok

P0455 will not cause a no start. P0455 is leak in the fuel vapor recovery system, it will never cause any type of drive related issue. Have the fuel pressure checked and see that you have spark, my bet is the fuel pump has gone out. A defective electric fuel pump will not set any code.

Posted on Jan 31, 2012

kitt98
  • 26 Answers

SOURCE: 2002 Chevy impala won't start

it could be multiple things, like .spark plugs. air filters. computers. fuel filters, and all kinds of different things

Posted on Jun 23, 2012

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SOURCE: We have a 98 Malibu that turns over but won't start.I was told it might be the fuel pump.If I use a diagnostic meter,will a code show for a bad fuel pump?

A bad fuel pump will not necessarily show a code. If you have a throttle body try spraying a little bit of starter fluid into it. Then try to start the car. If you have it will be under under the air cleaner cover and kind of looks like a conventional carbureator. If it starts with starter fluid and then dies you have a bad fuel pump, or clogged fuel filter. The fuel pump will be in the fuel tank. Im not sure where your fuel filter would be.

Posted on Jul 27, 2012

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I have a 1996 F350 7.3l deisel crewcab that ran fine. I parked it and then a week later I went to start it and it only just turned over with no starting


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Mar 07, 2012 | 1996 Ford F350 Crew Cab

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Fuel pump issues, car won't start, but cranks. I want to know where the fuel pump is and how I can see if it is working properly. How do you diagnose the fuel system issues.


the fuel pump is located in the fuel tank.

I assume you don't have a fuel pressure gauge so the first thing you can do is climb under the vehicle and disconnect the plastic fuel line where it connects to the metal line about in the center of the van up where the front seats would be. Have a drain pan under this area to catch any fuel and be ready to be sprayed if there is fuel pressure in the line. Safety glasses would be a good idea and you can wrap a rag around the line right before you fully disconnect the two lines to help avoid spraying gas everywhere.

keep the drain pan under the area of the disconnected line. Turn the key on but do not start the vehicle. You should see gas spray out of the plastic line. If you don't you're on the right track.

If there is no fuel, reconnect the lines and look back by the fuel tank. You will see the harness. find the dark green with white wire. It is the power supply to the fuel pump. Check for power on that wire. If you have power than you have a bad pump.

If you have any questions let me know. Thank you for using Fixya.com!

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I have a 2005 Ford F350 diesel with 6.0 powerstroke I have been having problems with a misfire I believe it is fuel injectors. Due to water in the fuel system. i started using diesel clean fuel injector...


Diesel clean will help, but it won't remove all the water in your fuel. Try some water dispersant fuel treatment as well.

I'm guessing your water in fuel light came on? It this happened for any length of time, your fuel water seperator sensor could of shorted out, this will cause a misfire, and will have to be replaced. There are several other things with the 6.0 that could be the problem, but i would start with this first. The back pressure control valve sticking and the pressure sensor out of calibration are also common problems on this engine.

Good luck, i hope this helps.

Jun 28, 2011 | Ford F-350 Cars & Trucks

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