Recently bought an 86 cutlass and noticed today on the way to work I have a sound when accelerating. At idle all I can hear is a belt/accessory squeak but as I accelerate or rev the engine quickly there’s a loud tapping sound. I tried to isolate it with the hood popped but haven’t had much luck.
If I pull the throttle back slowly I don’t really hear it. The exhaust is in bad shape under the car. Dozens of holes in the intermediate pipe. I can’t get a good look at the manifolds to see what kind of shape they’re in.
It sounds a lot more like a tap than a knock to me but I’m no expert. Thinking it could be valvetrain...
I have a video with the hood popped while I’m checking it but couldn’t figure out how to load it here. I’d appreciate any suggestions on how to figure it out.
If I pull the throttle back slowly I don’t really hear it. The exhaust is in bad shape under the car. Dozens of holes in the intermediate pipe. I can’t get a good look at the manifolds to see what kind of shape they’re in.
It sounds a lot more like a tap than a knock to me but I’m no expert. Thinking it could be valvetrain...
I have a video with the hood popped while I’m checking it but couldn’t figure out how to load it here. I’d appreciate any suggestions on how to figure it out.