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Thread: Miss fire after cam install
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04-22-2009, 05:38 PM #1
- Join Date
- Apr 2009
- Location
- Kamsas
- Posts
- 4
Black- 1998 Z-28
Miss fire after cam install
Hey guys i just installed a cam in my 1998 z-28. Now i have missfires. Mostly on cylinder 2 but i get them in other cyilnders as well. you can hear it in the exhaust. It does not have all the power either. this is the cam i installed.
Cam-12565308
2002'2004 LS6 Cam
I: 204 E: 218
I: .550 E: .550
117.5
I put new springs in the heads but the heads worked just fine before the install. do i need to have the car tuned for this cam??
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04-22-2009, 05:54 PM #2
Shouldn't need a tune for an LS6 cam. Are you absolutley certain that you installed the cam in phase? Also, did you by any chance damage any wiring to the coil packs?
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04-22-2009, 06:01 PM #3
- Join Date
- Apr 2009
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- Kamsas
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- 4
Black- 1998 Z-28
What do you mean in phase?? i have fire from the coil.
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04-22-2009, 06:19 PM #4
Did you get the chain and pulleys in correctly? Crank should have had the #1 at TDC (dot on gear at 12:00, and you should have had the cam gear at either 12:00 or 6:00. It can be hard to see for sure sometimes.
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04-22-2009, 06:31 PM #5
- Join Date
- Apr 2009
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- Kamsas
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- 4
Black- 1998 Z-28
o ya i got it lined up. Looked as perfect as could be
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04-22-2009, 07:29 PM #6
- Join Date
- Jun 2008
- Location
- ohio
- Posts
- 393
black- 1998 Camaro SS
mine was misfiring like that after my cam install. i found out that i put the passenger side coil pack harness on upside down and it was firing the wrong cylinders at the wrong time.
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04-22-2009, 09:10 PM #7
yes the coil packs are left and right. Check the harness connector and make sure the wires match up from the harness to the main coil connector. Also check your injectors and make sure that they are all ticking. I had two bad connectors and had to replace them.
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04-23-2009, 03:25 PM #8
- Join Date
- Apr 2009
- Location
- Kamsas
- Posts
- 4
Black- 1998 Z-28
Found the problem number two plug had no gap in it must of been dropped when it was in the box. Should of paid more attention when i put them in.
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04-23-2009, 03:36 PM #9
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