Cylinders 2 4 6 Misfire

Asked by GuruCMG9C Mar 10, 2019 at 09:56 PM about the 2005 Cadillac CTS 3.6L RWD

Question type: Maintenance & Repair

Hello,

My 3.6L V6 has been misfiring when driving.
Specifically on cylinders 2,4,6. The engine begins
to jerk/misfire whenever I apply a small amount of
fuel (about 10% of the pedal). If I give it a lot of
gas, then the engine returns to it's normal state.
Furthermore, it has been having a hard starting in
the cold because of this. (Battery, spark plugs, and
coils are all fine). I was originally thinking it must
be fuel delivery to just that side of the engine, but
there are no other error codes besides the misfires.
I know this specific engine has a faulty timing
chain tensioner that fails and allows the timing
chain to skip a tooth and cause either stage 1 or
stage 2 to be off, which would make sense if an
entire side of the engine was misfiring. How can I
tell if its fuel delivery or timing chain? I appreciate
any input!

6 Answers
310

Kimi answered 5 years ago

I am having the same problem with my 06 CTS 3.6 L. Misfirig on 2 4 and 6 I've had the coil packs and plugs changed. The ecm was replaced last year for the second time the car cranks string but not enough oomph fir it to start. Ive tried starting fkyid and my fuel pumps pumping ...call me worried

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140

GuruH15X9 answered 5 years ago

"My 3.6L V6 has been misfiring when driving. Specifically on cylinders 2,4,6. The engine begins to jerk/misfire whenever I apply a small amount of fuel (about 10% of the pedal). If I give it a lot of gas, then the engine returns to it's normal state." I have 100% exactly the same issue! Seems to be most noticeable between 20-25mph and seems to mostly run fine once on the highway. Also I do notice going around a corner(driving in a roundabout going 15mph) it makes an audible noise that I could imagine is a timing chain.

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210

Mikemike1e answered 4 years ago

Where are the answers to these questions. They say there's answers but they don't show them

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50

Aaron answered 4 years ago

Where are the answer to these questions

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