Quote:
Originally Posted by 85Bowtie
That doesn't sound like a rod knock. A rod knocking has a deep sound to it, kind of like stomping your foot on the ground. That sounds like something either in your valvetrain or possibly piston slap. I can't tell from an internet video, piston slap isn't usually THAT noisy but the video might over exaggerate it. It also usually goes away once the motor warms up and the pistons expand and create a tighter fit in the cylinder.
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It is a constant sound- No change when it is warmed up.
it is a 3 speed auto with a newer trans with 15 K on it
I did notice that the cat converter has a quarter size hole in it and so does the muffler. I'm thinking of replacing the exhaust along with a new fuel pump. I will pull the flywheel cover and check the bolts tonight if I have time.