Where is cylinder 7 on a 5.3 vortec engine its misfiring.
660

Asked by javery28j Mar 10, 2013 at 04:05 PM about the 2002 Chevrolet Silverado 1500 Extended Cab LB 4WD

Question type: Maintenance & Repair

7 Answers
660

javery28j answered 11 years ago

Im no mechanic so im guessing cylinder 7 is 7 on this diagram

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DavidH25 answered 11 years ago

Ah, shucks Bob you flatter me. Dinner and a movie? Those numbers on top are the firing order. And yes javery 7 is 7 and I too was wondering how/why you think #7 is misfiring, OBD code?

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migration_judge_roy answered 11 years ago

Last time I went to the southland, it was $350 in gas just to get there, so it'd be a pricey dinner that took 7 1/2 hours to make (the appointment, not the dinner)---jeez, I can't travel, but the sentiment is appreciated...Often thought if all the GURUs went to a convention center for a "meeting of the minds" what everyone looks like. Kinda know from the attitudes represented in the responses-

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140

Phineas answered 9 years ago

Never overlook a possible valve problem. A vacuum gauge will tell you that. If it holds steady, intakes are OK. If it "dances" around, there is an intake leaking. Hold a folded dollar bill up to the tailpipe. It should just blow away. If it "sucks" into the pipe, it might be an exhaust valve.

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