The chevy boys at my work have been making fun of the ford piston slap problem for quite a while now. Well, it seems that some gm owners are complaining about a knock at startup. One of these chevy boys took his 2000 silverado to the dealership for a noise at startup. Guess what? The mechanic explained a problem to him called "piston slap". He is getting a new engine at 8,500 miles. What goes around, comes around.

 

Piston slap on the New Vortec's? Never heard this one before! In fact, I don't know anyone (besides members here) that has a Triton with piston slap. Must be a geographical thing or something.

 

i've heard of them haveing rod knocks at start up.

 

Yeah, Ive heard of knocking with them, but Piston slap? Thats a new one on me.

 

Our old 92 350 has loud rocker noise. But it doesn't have piston rod knocking