Why are cylinders two and six misfiring under load?

SAMUELHDZ98

MEMBER
2009 AUDI A5
3.2L
6 CYL
4WD
AUTOMATIC
121,000 MILES

Misfire only cylinder 2 and 6 when you go above 4,000 RPMs and under load.

Sunday, July 24th, 2022 AT 6:05 PM

1 Reply

BORIS K

MECHANIC
762 POSTS

Hello,

Are you using a diagnostic tool to check the misfire counters?

Have you tried replacing spark plugs and swapping ignition coils from okay cylinders, say 1+4, and then see if the misfire moves to the other cylinders?

See cylinder layout at bottom.

Also look at below link.
https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Cheers, Boris

Image (Click to make bigger)