C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Wont run right

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Old Mar 3, 2012 | 12:51 PM
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Default Wont run right

I have a 1994 C4 w/13,000 miles. I keep it on trickle charge during winter months.Pulled it out to just run it the other day.
When i start it the volts read 15 then drops down.
I,ll leave it running after 5 mins. starts missing a little.
Pull it out down drive way starts running rough.
Put in drive punch it starts breaking up & popping.
Then hard to start volts read 11.9-12.3 on dash gauge.
When started it bucks & misses,wont stay running.
Any help?

Last edited by idprints; Mar 4, 2012 at 07:51 AM.
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Old Mar 3, 2012 | 12:52 PM
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bad gas
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Old Mar 3, 2012 | 11:21 PM
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Based on your description it could be anything.

Engines need 4 (technically 5) things to run:
Air, Fuel, Spark, Compression, and Timing of all of them.

I'd start with fuel and spark.

What is your fuel pressure?
Do you have good solid spark at the plugs?

Troubleshooting requires a logical process not merely guessing. Start simple and gradually get more complex in your search.
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Old Mar 4, 2012 | 06:11 AM
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1st thing to do is run that old gas out. And while you are driving stop at Autozone advance wherever and have them check the battery. If you haven't changed anything on the engine the odds are they are OK.
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Old Mar 8, 2012 | 01:20 PM
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I put some Gas line Anti-Freeze in the tank and its running fine.
Thanks everyone for you help.
Damn that Ethanol !
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Old Mar 8, 2012 | 02:00 PM
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next time you store it add a product called
'stayble' sorry bout the spelling, it keeps gas from turning to acetone.
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Old Mar 8, 2012 | 02:52 PM
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Originally Posted by oldalaskaman
next time you store it add a product called
'stayble' sorry bout the spelling, it keeps gas from turning to acetone.
staybil ?? sp? (good stuff)

or

Sea-Foam makes a good storage product as well.
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Old Mar 8, 2012 | 03:18 PM
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yup, never could spell
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Old Mar 8, 2012 | 08:06 PM
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If i keep till then.
I just dont drive it much. 13,000 orginal miles.
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Old Mar 8, 2012 | 08:12 PM
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Originally Posted by idprints
If i keep till then.
I just dont drive it much. 13,000 orginal miles.
there could be a trout farm in the gas tank and with ony 13,000 miles thats a very desirable car.....
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Old Mar 8, 2012 | 09:11 PM
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Originally Posted by idprints
I put some Gas line Anti-Freeze in the tank and its running fine.
Thanks everyone for you help.
Damn that Ethanol !
Huh? Gas line anti-freeze is basically an alcohol and last I checked not that much different than ethanol. They both ABSORB water. I bet you have water in your fuel.

You should store the car with the tank full to minimize condensation with lots of Sta-Bil. I would double dose your car or drive it.
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Old Mar 8, 2012 | 09:16 PM
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Sorry, and I know you are all thinking it but that is a waste of car.
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Old Mar 8, 2012 | 10:39 PM
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Thats why iam going to sell it.
Let someone enjoy it.
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Old Mar 8, 2012 | 10:54 PM
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Trickle chargers aren't recommended for long periods either.. s/b a tender..
lol http://forums.corvetteforum.com/sear...rchid=28702707

Last edited by ccrazor; Mar 8, 2012 at 11:18 PM.
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