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

exhaust and poor engine running ques.

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Old May 4, 2011 | 11:09 AM
  #1  
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YLLW91C
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Default exhaust and poor engine running ques.

Good morning,

My father just purchased a 86 Coupe and asked me to post 2 questions as he is not computer literate.

1. Does anyone know of an exhaust manufacturer that makes a quite muffler? He is not concerned about high flow, just noise reduction.

2. He got some gas with water in it a couple weeks ago and the motor is still running irratically. He has run Sea Foam through it, dry gas, and has filled it up twice since then. He knows there was water in it because he manually drained several gallons out and ended up with approx. a tbs. full of water in the funnel screen. He is very mechanical and has done everything he can think of up to and including unhooking the battery to see if that helped. Any thoughts would be greatly appreciated?

Thanks in advance for your help with these 2 questions

Denny G.
91 Yllw Vert.
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Old May 4, 2011 | 12:58 PM
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muzikmanwi
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Corvette Central make the muffler you want.

http://www.parts123.com/parts123/yb....Z5Z5Z50000050F

I'd replace the fuel filter but also remember the water in the gas may just be a coincidence and you have something else wrong too.
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Old May 4, 2011 | 01:10 PM
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I would siphon the bad gas out of the tank and refill it. Lawnmowers run on anything.
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Old May 5, 2011 | 07:21 PM
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An 86....?

I'd be willing to bet it's time to call Jon.

Water is just a coincidence.

If TPS, base timing is set right and there are no vac leaks, and fuel pressure is near 40 and stable,. call Jon.
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Old May 5, 2011 | 07:37 PM
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Look for a pair of LT mufflers, maybe on the parts wanted section here. Jon at FIC can get you new injectors at a very reasonable price.
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