I have a 99 k2500 suburban 7.4 with a miss at idle....main problem is the miss is changing cylinders, from 5 then 7 to 4 etc. Injectors starving???Fuel pump maybe??? i'm lost on this one
Mine did this...it was the injectors called "the spider" because that's what it looks like...I would start there...
Hello;
Have you checked the fuel pressure? You may have a sticking fuel regulator, causing too much fuel at idle. Since it works fine off idle and cruise I would look there.
Thanks;
Rich
RPM Northwest
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Bad miss at idle?
http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html
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While stop engine idles
like cylinder missing?
http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
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Engine Misfire codes for
car?
http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
Engine Misfire codes?
http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
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Misfire on cylinder 4?
http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html
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Oil on spark plugs and car misfires?
http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html
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This will help.
Thanks.
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