WHAT CAUSE ENGINE TO RUN LEAN?

1996 Chevrolet Silverado

Tiny

joe1953

October, 6, 2012 AT 4:44 PM

Engine have a misfire at idle in #5 cylinder Spark plug wires, Spark plugs, compression or good #5 Spark plug have white carbon build up on it, this engine have a Throttle Body.

FOUND 5378 RELATED QUESTIONS

37 Answers

Tiny

ASEMaster6371

October, 6, 2012 AT 4:46 PM

Missfire comes from, compression, vacuum leak, low fuel pressure, injector issue. All these need to be checked.

Roy

Tiny

joe1953

October, 6, 2012 AT 4:54 PM

How do I check for vacuum leak.

Tiny

ASEMaster6371

October, 6, 2012 AT 5:00 PM

Well, you really need a smoke machine, which is not in everybodys toolbox.

You can try spraying a little carb cleaner around the intake where it meets the head and see if the rpm rise or change

Roy

Tiny

joe1953

October, 6, 2012 AT 5:20 PM

I did spray a little carb cleaner around the upper intake rpm didn't change, what is a smoke machine.

Tiny

ASEMaster6371

October, 6, 2012 AT 10:14 PM

You should let a shop do this for you. It is an 1200 dollar tool that injects smoke in the system and you can identify the leak with the smoke.

Roy

Tiny

joe1953

October, 7, 2012 AT 3:28 AM

About how much it will cost for a shop to identify the leak.

Tiny

CJ MEDEVAC

October, 7, 2012 AT 3:59 AM

THIS IS CRUDE--BUT IT WORKS!

http://www.youtube.com/watch?v=zMok2y05jNE

THE MEDIC

Tiny

KHLow2008

October, 7, 2012 AT 8:34 AM

Nice one CJ, but if a Havana is required, it is not to be too cheap, lol.

Tiny

CJ MEDEVAC

October, 7, 2012 AT 12:39 PM

COULD ALSO BE CONNECTED TO A CERTAIN POLITICIAN

BE CERTAIN YOUR SYSTEM IS CAPABLE OF HANDLING THAT KIND OF PRESSURE

THE MEDIC

Tiny

joe1953

October, 8, 2012 AT 4:26 PM

I can't watch the videos do I need to install something on my computer before I can watch the video.

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