2002 Cavalier 2.2 ecotec. It has cylinder 4 misfire.

Tiny
02CAVWITHISSUES
  • 2002 CHEVROLET CAVALIER
  • 85,500 MILES

2002 cavalier 2.2 ecotec. It has cylinder 4 msfire. Ihave changed spark plugs wires icm ignition coil and fuel injectors with no change. Did compression test and cylinder 1-3 210 psi and cylinder 4 190 psi. What could my problem be?

Do you
have the same problem?
Yes
No
Monday, August 13th, 2012 AT 2:37 PM

5 Replies

Tiny
ASEMASTER6371
  • EXPERT
  • 25,525 POSTS

Remove the valve cover and make sure the pushrods and rocker arm is moving.

Roy

Was this
answer
helpful?
Yes
No
-1
Monday, August 13th, 2012 AT 3:45 PM
Tiny
02CAVWITHISSUES
  • MEMBER

I did remove valve cover and rocker arms are moving. Time chain is correct tensioner is good.

Was this
answer
helpful?
Yes
No
Monday, August 13th, 2012 AT 4:19 PM
Tiny
ASEMASTER6371
  • EXPERT
  • 25,525 POSTS

Re check the compression for that cylinder. Is there any noise from the valve train while running?

Does the plug spark?

Roy

Was this
answer
helpful?
Yes
No
Monday, August 13th, 2012 AT 4:24 PM
Tiny
02CAVWITHISSUES
  • MEMBER

Yes sounds like valve clatter when under load. I did check compression cylinders 1-3 had 210 psi and cylinder had 190 psi cylinder 4 is the one I am having issues with. Yes it has spark and fuel.

Was this
answer
helpful?
Yes
No
Monday, August 13th, 2012 AT 4:28 PM
Tiny
ASEMASTER6371
  • EXPERT
  • 25,525 POSTS

The noise may the valve moving in the guide causing the miss.

Roy

Was this
answer
helpful?
Yes
No
Please consider a donation if we helped you
Monday, August 13th, 2012 AT 4:41 PM

Please login or register to post a reply.

Related Misfire Cylinder Questions

Recommended articles