Question about 1996 Chevrolet K1500

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#3 cylinder is miss firing, could the intake gasket have a leak between with the coolant & fuel. 1996 Siverado 165000 Mi. 350(5.7)

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That is a central port injection system and the injectors are well known for clogging.

Posted on Sep 07, 2010

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Head gasket or intake manifold gaste again 96 k1500 5.7 vortec. starts runs idles and drives rough it likes to **** while trying to drive almost as if it wants to stall out. i put my scanner on it and


The website has software that looks for obscene words.
I would think a compression test would show if the cylinder is having mechanical problems. And yes the intake or head gasket could be leaking again, especially if the intake or head were warped or cracked.
Have you checked fuel pressure ?
Does the spark plug for cylinder 5 show signs of coolant leaking into the cylinder ?

Feb 09, 2013 | 1996 Chevrolet K1500

2 Answers

I have a bad miss in a 97 4.6


If you have a code for a miss on one cylinder, it could be the fuel injector instead of the ignition. It could also be a stuck or burnt valve problem.

Dec 25, 2012 | 1999 Ford F150 Regular Cab

1 Answer

2001 Buick Regal keeps stalling and running rough has white smoke coming out of tail pipe


The upper intake plenum is leaking coolant into the cylinder heads. The head gaskets on this motor are awesome. So, chances are it's the upper intake plenum. You can check this, by removing the vacuum hose that runs between the upper plenum and the brake booster. Stick your finger in and try to touch the top of the lower intake manifold. If your finger is wet it the upper plenum. You might as well replace the lower intake gasket while you're performing this work because they are prone to failure also. Use a shop vac to pull any coolant out of the cylinder heads. Get brand new spark plugs because the old ones are probably fouled. Once you get the plenum and gaskets replaced, remove your fuel pump relay and leave the spark plugs out and turn the engine over repeatedly for about 10 seconds to push any excess coolant out of the cylinder heads. Then, put the spark plugs in and turn the engine over for 10 seconds again. This will burn excess fuel as coolant out. Then, replace the fuel pump relay to allow fuel to be pumped into the heads. Car will smoke for a few when it fires up, but will clear out quickly. CHANGE THE OIL! Twice within a week if possible.

Jul 23, 2012 | 2001 Buick Regal

1 Answer

I have a 99 chevy malibu with a misfire in cylinder 1 and I have already replaced the coil packs and the spark plug on that cylinder but the miss fire continues. Any Help really need to get it fixed by...


If you have a 3,1 motor, there's a very good chance your lower intake manifold gasket is allowing coolant into cylinder 1 and keeping it from firing. Number 1 is right next to a coolant port, ant the 3.1/3,4's are very well known for intake gasket failure.

Sep 05, 2011 | 1997 Chevrolet Malibu

2 Answers

Check engine light is on, they say multiple miss fire in cylcinder 6. but no one can find the problem van runs great


first do a cylinder compression test on engine to verify good engine compression this should be around 110psi to 175 psi check for vacuum leak, intake port for #6 cylindermay be leaking air, or also check coil for that cylinder, if wire and spark plug have already been changed, last replace fuel injector for that cylinder.

Jan 24, 2011 | 1996 Dodge Caravan

1 Answer

1996 jeep cherokee miss fires and white smoke from exhaust. replaced head gasket and still runs the same.. runs fine when cold.


White smoke is usually the sign of a blown headgasket. I would have the coolant system pressure tested before any serious damage is done.

Keep in mind this codes:
- Black is excessive fuel
- Blue is oil
- White is coolant

Then, if you see white smoke from the tailpipe, you have coolant escaping into the intake system.


Keep us updated.

Dec 21, 2010 | 1996 Jeep Grand Cherokee

3 Answers

#1 plug is miss-firing.I have replaced plug and wire,but keeps miss-firing only on#1 plug.have been told that coolant is possibly getting in #1cylinder.also I have been told #1 coil could be bad.witch is...


Could only be a few things. The coil #1, Fuel injector #1, Stuck intake or exhaust valve, or blown head gasket allowing coolant into cylinder #1. Use a spark tester to check the spark coming out of cylindr #1 if checks good then ohm test the injector when it is warm. Check other injectors to compare. Do a compression test on cylinder #1 and test other cylinders to compare. If cylinder is low compression suspect valves and or head gasket. If compression is low then het a leak down tester to test if a valve is broke or sticking. On your sable i would suspect injector or coil most likely.

Oct 10, 2010 | 2000 Buick LeSabre

1 Answer

Cylinder 5 misfire were is tha cylinder


CYLINDER NUMBER 5 IS STANDING IN FRONT OF VECHICLE IT WILL BE THE 5 CYLINDER COUNTING FRONT TO THE BACK CYLINDERS IS IN ORDER 1 2 3 4 5 6 THAT YOUR CYLINDER ORDER. YOU HAVE A INLINE 6 CYLINDER ENGINE.YOUR MISS FIRE COULD BE THE COIL - SPARK PLUG - CLOGGED OR FAULTY FUEL INJECTOR. ALSO INTAKE MANIFOLD VACUUM LEAK OR SLIGHT HEAD GASKET LEAK WILL CAUSE MISFIRE.

May 06, 2010 | 2002 GMC Envoy

1 Answer

I lose coolant every 1000 miles , with no signs of leaks on the ground, my truck has 165000 miles on it. 5.3 vortec motor


Stop at rad shop & have then add dye to your coolant, then check exhaust with black light for signs. I believe intake gaskets were problematic on those too. You may want to check a dealer for any TSB's. Either way, dye test will give you an idea if it's going out the tailpipe.

Jul 20, 2009 | 1999 GMC Sierra

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