stumble at idle.
Thread Starter
Safety Car
Joined: Aug 2004
Posts: 4,908
Likes: 735
From: Southwest Kansas
2022 Corvette of the Year Finalist -- Unmodified
2021 C6 of the Year Winner - Unmodified
Ok, I find that the fuel pressure should be a tad bit higher so I order a new fuel pump (AC DELCO from Superior Chevy), strainer and a new fuel filter. I get the FP/strainer installed-no change, the fuel pressures are exactly the same. So I go on and change the filter. While doing this I find that the #8 spark plug is a little loose, so I tighten it up as well.
Still not much different from before. It idles much better, but it still bogs when I rev it up, it has even back fired or "popped" a couple of times. No power, smells like it is running very rich.
I need some advice here, I am running out of options!
Still not much different from before. It idles much better, but it still bogs when I rev it up, it has even back fired or "popped" a couple of times. No power, smells like it is running very rich.
I need some advice here, I am running out of options!
Safety Car
Joined: Oct 2007
Posts: 3,816
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From: :45 minutes from everywhere / E-I-E-I-O
Thread Starter
Safety Car
Joined: Aug 2004
Posts: 4,908
Likes: 735
From: Southwest Kansas
2022 Corvette of the Year Finalist -- Unmodified
2021 C6 of the Year Winner - Unmodified
Popping came through TB. I was standing right there running the throttle by hand when it did it once.
Redeasy, yes I know and mine hasn't been on there for too much more than a 15 or 16 months maybe 6k miles.
Last edited by teebee; Jul 28, 2008 at 10:00 PM.
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Thread Starter
Safety Car
Joined: Aug 2004
Posts: 4,908
Likes: 735
From: Southwest Kansas
2022 Corvette of the Year Finalist -- Unmodified
2021 C6 of the Year Winner - Unmodified
Well guys (and gals), I just wanted to update this issue. I fought this for a while and I really can't even go into the entire saga, but I will say that I have finally resolved the issue.
Ultimately it came down to a bad optispark...this one was only 1 1/2 years old (less than 6000 miles). but as you can see in the picture the cap was toast and the rotor was shot as well. I could have gotten by with replacing the cap and rotor, but I decided that if I had it down that far I should replace the entire opti and I DID NOT go back with genuine GM, but chose to go with MSD. More money than GM, but I was not going to chance it again.
Jon Banner....I still have, at this point, the OE injectors in place. I think I am going to leave them in for now.
Ultimately it came down to a bad optispark...this one was only 1 1/2 years old (less than 6000 miles). but as you can see in the picture the cap was toast and the rotor was shot as well. I could have gotten by with replacing the cap and rotor, but I decided that if I had it down that far I should replace the entire opti and I DID NOT go back with genuine GM, but chose to go with MSD. More money than GM, but I was not going to chance it again.
Jon Banner....I still have, at this point, the OE injectors in place. I think I am going to leave them in for now.
Burning Brakes
Joined: Feb 1999
Posts: 1,157
Likes: 3
From: Encino CA
Bingo--I was wondering when someone was going to suggest "opti". Usually this happens by the second or third post and oftentimes the opti is not really the problem. It looks like this time it was.
Congrats for solving.
Doug
Congrats for solving.
Doug
Thread Starter
Safety Car
Joined: Aug 2004
Posts: 4,908
Likes: 735
From: Southwest Kansas
2022 Corvette of the Year Finalist -- Unmodified
2021 C6 of the Year Winner - Unmodified
Redeasysport alluded to the opti but at that point I was still convinced that it was nearly new and expected genuine GM parts were better than that.
