Question about 1996 GMC Jimmy

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Have a 96 Jimmy. Sometimes it runs and other it will not start. If i put gas in motor directly it will start and stay running. Runs fine for a few starts bit after it sits over night it will not start unless i prime it. Then will run for a few days fine and sometimes just a few hours. Has never died while driving.

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  • 232 Answers

Your carb has a very small pinhole that lets the fuel in the float section drain out. You may have to replace the carb. Good luck with that.

Posted on Dec 17, 2017


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Posted on Jan 02, 2017



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SOURCE: 91 jimmy starts cold, runs rough hot, dies when put in drive

Try to unplug the mass airflow sensor and start it. It will idle higher but should run fine. If it works then you need a MAF sensor. Be sure you have an OBDII code puller to clear the computer when done

Posted on Jan 25, 2009


  • 1118 Answers


When was the last time the fuel filter was chg. If you can't remember its time for a new one.If it does not help after you chg. filter, best to fuel pressure test, to see if pump is going bad.

Posted on Feb 10, 2009

66 chrgr

mike loshbough

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SOURCE: 98 gmc jimmy will start and then immediately

most likely your fuel pump regulator is bleeding off it is located under the top intake plenum.

Posted on May 02, 2009


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SOURCE: 1994 gmc jimmy hesitataes upon acelaration

I would like more info, like what have you done so far. But it could be related to fuel line pressure (needs to over 35 psi), or and over due complete tune-up. If tuneup was done recently then go back over it. The plug wires are not easy to put on and if the little tiny black clip breaks off the wire is junk. If the wires are not on correctly it will cause a misfire. But my first guess would be a tired fuel-pump. let me know if that helps or if you may have other questions.

Posted on Nov 08, 2009


  • 1 Answer

SOURCE: Truck starts, runs for 5-10 seconds, then dies

take out your mass airflow sensor located on air intake pipe and clean with brake cleaner also is your engine light on?

Posted on Jan 07, 2010

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