Question about 1995 GMC Jimmy

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My 1995 gmc jimmy is running rich,black soot in tail pipe,starts running rough after warmed up whats the problem here.

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Posted on Jan 02, 2017

kirkx
  • 2019 Answers

SOURCE: 1995 gmc jimmy 4x4 rough idle smell gas from tail pipe

To check EGR valve, plug the vacuum hose to it, and it should not get hot anymore. It if does, it is leaking.
But gas smell is usually bad plug wire or plug.
With good insulation, remove one sparkplug wire at a time, to see if one has no effect. That is the target.

Posted on Jul 25, 2009

  • 105 Answers

SOURCE: i have 1996 gmc truck it 6 black plugs

replace rotor button

Posted on Jan 31, 2010

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SOURCE: i am letting my 2000 gmc jimmy set idling and black **** hits the ground. what could cause that

CHECK YOUR MAP SENSOR THAT WILL COUSE IT OK LET ME KNOW IF NEED MORE HELP

Posted on Nov 18, 2012

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1 Answer

Truck runs smooth going fast, but a bit bumpy going slow


The black soot would be unburned fuel the moisture would be condensation from engine not being at operating temperature.
Do you still get moisture out of pipe after it is warmed up or just while it is warming up? Seeing it's a 1988 you should be able to make some adjustments to air or fuel mixture to make it run smoother and lose the black soot. Hope this helps.

Mar 17, 2015 | 1988 Ford F 150

1 Answer

Having replaced most of the electrical componts on a Vortec 4.3 1995 Jimmy engine motor barely starts and if starts run extemely rough


These are real common for having fuel leaks inside the intake causing them to run real rich. Have you checked for this or ever ran into it? Let me know. I can explain more about it.

Feb 06, 2011 | 1995 GMC Jimmy

1 Answer

98 gm blazer has black soot from muffler giving code insufficiant switching o2 sensor bank 1 and 2 any ideas ?


Your Jimmy is running rich, air fuel ratio is not correct. Start with cleaning your MAF sensor, a dirty MAF sensor will cause your engine to run rich or lean, other causes would be a faulty fuel pressure regulator. Start with the simple and to common and try cleaning your MAF sensor, you can pick up a can of MAF sensor cleaner at most auto parts store like Auto Zone or Part Source.
Also make sure your engine is running at the proper operation temperature 190", cold running engine will cause the ECM to run your engine rich. Causing the back soot and fouling up your spark plugs and intake ports with carbon.
The ECM was programed to recognize the 4.3 vortec to run at 190" and anything cooler will cause it to run rich and poor on economy.
Thank you for using fixya and good luck.

Apr 27, 2010 | 1998 GMC Jimmy

1 Answer

95 jimmy runs fine until it gets warm and then it runs rough and dies


sounds like the cat. converter is pluged or the oxigen senser is bad and that is on the exaust by the y-pipe and the converter. hope this helps you

Feb 27, 2010 | 1995 GMC Jimmy

2 Answers

1988 gmc 1500 Gas smell coming from tail pipes


sounds like it running to rich of a fuel mixture, the first thing i would do is replace the oxygen sensor and also make sure its not misfiring an any cylinder, start there, hope this helps.

Dec 26, 2009 | 1988 GMC C1500

4 Answers

My 1983 toyota pickup runs rough and black soot come from exhaust


carb automatic choke sticking closed or your float setting too high causing flooding engine.

Nov 19, 2009 | 1983 Toyota Pickup

1 Answer

My question is this I have a 1983 toyota pickup truck with the 22R engine.About a week ago I pulled out ot my drive way and when the motor warm up it started to run rough and black soot was coming from my...


black soot is a running rich condition it's getting to much gas not enough air .. 14-1 ratio air to gas your carb rebuild needs to be rechecked for sticking float..

Nov 19, 2009 | 1983 Toyota Pickup

2 Answers

Black smoke coming from a 250 GM inline 6 exhaust pipe, then ran rough and now has quit and will not start


you don't say what year, if it has a carburetor it's flooding (Needs a new float) Way too rich

remember this
Blue smoke OIL
black smoke GAS

Aug 30, 2009 | 1983 GMC Jimmy

2 Answers

1995 gmc jimmy 4x4 rough idle smell gas from tail pipe


To check EGR valve, plug the vacuum hose to it, and it should not get hot anymore. It if does, it is leaking.
But gas smell is usually bad plug wire or plug.
With good insulation, remove one sparkplug wire at a time, to see if one has no effect. That is the target.

Jul 25, 2009 | 1995 GMC Jimmy

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