1993C4LT1

Coming from the driver side tailpipes. I can't hear it on the passenger side tailpipes.

Sorry for the bad cell phone video

Jon Hekking

Don't hear it in mine, could be a bad gasket or another leak some where on that side. Here's mine after a recent exhaust update;

1993C4LT1

Thanks Jon. I'll take it to get it checked for exhaust leaks. Good looking car

antfarmer2

Might be that extra gas your burning at 11 gpm

1993C4LT1

This was my first thought.

Cliff Harris

If your exhaust system is fairly close to stock then the pipes split after the catalytic converter. Basically what that says is that the same exhaust is coming out of both sides. I would guess a problem inside the muffler.

ricasso

It does sound like something flapping in the muffler, what exhaust do you have?

1993C4LT1

Allen's Chambered muffler eliminators. Could it be a catalytic converter going bad?

ricasso

Could be I guess, would it be possible to get both pipes emission tested? that might tell you if the cats bad on one side, just a thought..

1993C4LT1

I'll get that done as soon as I can. It made this sound when I had the factory mufflers on to. This car has a gas smell on cold starts, or when it starts hard after sitting for 10 minutes or more. On hard starting, it smells like gas. Weird that this car passed emission legally not too long ago.

Cliff Harris

Check the vacuum hose on your fuel pressure regulator. Make sure there is no fuel in the hose (indicates ruptured fuel pressure regulator diaphragm).

1993C4LT1

Will do. Do I check this with the engine running, or just by putting the key in ON position?

antfarmer2

have you pulled the diaphragm yet? turning the key on the pump will only run two sec