Slaping noise in engine

[pcup]

When starting the engine a slapping noise [like a leather belt hitting the wall ] came from the front. I pulled the fan belt, restarted and same noise! Suggestions readily accepted.

 

[700rpm]

Did this just start, or has it happened before?

 

[Tom Wesenberg]

Is it the same whether the engine is cold or hot?

My engine also has a noise which I'll probably look into this winter, but I'm sure it's piston slap caused by the rear cylinders being overheated by the cooling chamber being blocked by a lot of rust buildup.

 

[Kohnke Rebabbitting]

Rods out of Alignment is the only thing that causes piston slap.

 

[pcup]

did this just start, or has it happened before?

this a.m. Was the 1st i've heard it. The temp. Was about 70 and the pickup was used the week before. It's not a high time eng.

 

[H. L. Chauvin]

Try Amazon.com for a mechanic's stethoscope to try to pin point where the noise is coming from.