New guy with problems
Elder User
Joined: Jun 2010
Posts: 641
Likes: 0
From: TX
Elder User
Joined: Jun 2010
Posts: 641
Likes: 0
From: TX
:/ we should have told him to try this first... dang it!
Postmaster
Joined: Jan 2009
Posts: 4,558
Likes: 2
Are you sure its a spark issue ? if not i would check compression on the cylinder , witch clyinder is not firing , or do you now if its a dead cylinder ?
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Postmaster
Joined: Jan 2009
Posts: 4,558
Likes: 2
I guess i missed something along the way , i didnt know that , may be a stuck injector , i remember when you pulled the plugs that only one plug was wet , witch cylinder was it ? if you pull the plug wire off that cylinder goes it run the same , you can pull the wire with it off then start it back up & see if theres any difference in the way it runs , the firing order is good right , sorry for all the dumb ouestions but the more info the better...
Thread Starter
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Freshman User
Joined: Jul 2010
Posts: 39
Likes: 0
From: Eastpointe, MI
I've pulled it off and it still runs the same. Tried another brand new injector on that cylinder and it was still the same. Plug may have just gotten oil on it when i pulled it out. All the other plugs were dry and brown when i replaced them. Injectors were all replaced when the motor was so they're all pretty new. It seems to not run as bad when i start it cold then gets worse as it warms up for a minute or so.
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Freshman User
Joined: Jul 2010
Posts: 39
Likes: 0
From: Eastpointe, MI
Firing order is good as this happened after i stopped at a store and started driving again. Ran great for the first week and a half i had it. Then all of a sudden it turned to crap.
Postmaster
Joined: Jan 2009
Posts: 4,558
Likes: 2
Well if its just missing on the one cylinder , either theres no spark , no fuel , or no compression , have you checked compression yet , could also be vacuume leak at intake , there could be another problem to ? but if its just missing on that one cylinder thats where to start.....
Elder User
Joined: Jun 2010
Posts: 641
Likes: 0
From: TX
but wouldn't a vacuum leak make more than one cylinder misfire? I know if you have a vacuum leak in an o-ring then it only misfires in that particular cylinder. he tried another injector so it's probably getting fuel. What about the TFI module?
Thread Starter
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Freshman User
Joined: Jul 2010
Posts: 39
Likes: 0
From: Eastpointe, MI
I don't know if its just one cylinder. I just thought that before because of the one plug that was wet. I'll check the plug again in a few when it stops raining. We sprayed brake clean along the intake and didn't notice any changes. I'm gonna end up taking this thing to a shop and paying an arm and a leg. I don't have all the tools for these newer vehicles.