3 Days Ago | #1 |
Join Date: Oct 2018
Location: Indiana
Posts: 56
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Bringing the Champ back to fighting condition
Ok. I have been driving my 90 Z VIN1965 and it has not been a driven car for 24 years. Not sure the history and why it wasn't driven but for all signs (oil tags, and condition) it not been a sports car for 24 years.
I have a miss that is weird. It only misses when the secondary are on. It seems to only miss when warm. Still trying to confirm warm only miss. Thoughts on what I am chasing. I don't have a scope for LT5 waste space, so I can't tell if it is a cylinder or a bank that is missing. I have not pulled the plugs yet. But it is very intriguing that it does not miss with secondary off. Thoughts? I am a big one for diagnosing then fixing vs just changing plugs and wires especially pulling the intake. Thanks to all my LT5 friends! |
2 Days Ago | #2 |
Join Date: Sep 2008
Location: Speedway, IN
Posts: 131
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Re: Bringing the Champ back to fighting condition
You probably have one or more bad secondary injectors. There is a way detailed in this forum to check them at the ECM harness. If bad, replace them all. The original injectors are not ethanol resistant and short out. About 93 on did not have this problem.
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2 Days Ago | #3 |
Join Date: Sep 2008
Location: Speedway, IN
Posts: 131
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Re: Bringing the Champ back to fighting condition
As I recall you are looking for around 14 ohms resistance.
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14 Hours Ago | #4 |
Join Date: Jan 2010
Location: Mystic CT
Posts: 2,625
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Re: Bringing the Champ back to fighting condition
Replace the coils while you're in there....
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