Post the code and I'll post the FSM info.
Missing - Electrical Or Fuel?
Thread Starter
Racer
Joined: Dec 2006
Posts: 367
Likes: 0
From: Beaver Dam Kentucky
Missing - Electrical Or Fuel?
I had my 96 scanned and was told it had several misfires in the #3 cylinder. They suggested cleaning the injectors.
How can I determine if it's due to the Opti or Injector?
Will a timing light on that wire show me anything?
How can I determine if it's due to the Opti or Injector?
Will a timing light on that wire show me anything?
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Ohm the #3 injector and prime the fuel system and pull the spark plug...looking for raw fuel on the plug. Also test the harness connector with a noid light to make sure it's receiving signal.
Check the spark at idle and when giving throttle. The spark should be 1/2" bluish/orange.
Check the spark at idle and when giving throttle. The spark should be 1/2" bluish/orange.
Thread Starter
Racer
Joined: Dec 2006
Posts: 367
Likes: 0
From: Beaver Dam Kentucky
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
That garage is full of crap. I doubt very much that a scanner can identify an individual cylinder occasionally not firing. A timing light can tell you if the plug didn't fire, but the higher the rpm, the harder it is to recognize that it missed a spark. An injector missing a pulse is even more difficult to determine. I would check the resistance of all your plug wires, they should be about 5000 ohms per foot. Then at night, turn off the underhood lights and engine idling, watch for sparks along each plug wire, there should be none. Check your plug wire guides and replace any broken ones and make sure the plug wires are not touching any grounded metal.
Thread Starter
Racer
Joined: Dec 2006
Posts: 367
Likes: 0
From: Beaver Dam Kentucky
I too was under the impression that the ODBII was able to pinpoint the problem. I just wasn't getting that from the garage so I'm still wondering.
Anybody else???? Give me your .02 cents worth.
Anybody else???? Give me your .02 cents worth.
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