KEEPS MISSFIRING IN CYLNDERS 4 5 6

Asked by Feb 02, 2014 at 10:17 PM about the 2004 Audi A6 3.0 Quattro

Question type: Maintenance & Repair

I REPLACED COILS AND PLUGS AND THE SAME CODES COMEBACK PLEASE HELP!

5 Answers

try spraying those spark plug wires with WD-40...is a water displacer and will stop the shorting to ground (that you cannot see)~

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You may have dirty injectors or the ECM is only grounding those at certain times. First try a bottle of seafoam injector cleaner. The type you pull a vacuum hose off from the intake and put down in the can. See if this works.

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19,965

let us know

20,835

also conceder a vacuum leak at intake on that side, check fuel trim on scanner ,try suggested other stuff first ,I'm asking beyond DIY maybe.

1 of 1 people found this helpful.
19,965

Yes jimmy is correct if 4 5 6 are on the same side a vacuum leak could possibly set these codes too.

1 of 1 people found this helpful.

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