Please help me identify this Noise. (Video enclosed)

islandbayy · Post by **islandbayy** » Sun Jul 01, 2007 1:56 pm

Please help me identify this noise, it's not the gearinng, not the clutch/belt, any ideas? It's a 4 stroke.

It idels smoothly, but makes this noise. Idels and drives smooth. Customer said it was a bit slower then usual.
Any help much appreciated.

http://pictures.sprintpcs.com/share.do? ... =RETRIEVED

Sorry, not the best vid, used camera phone. It's a type of hollow ratteling poping noise-ish.

Not improper octane gas either. This thing requires 90octane or higher, he has 91 in it, i flushed and filled with 91 again to make sure.

Kenny_McCormic · Post by **Kenny_McCormic** » Sun Jul 01, 2007 3:44 pm

Maybe carbon deposits upped the compression to a point where 91 is to low. Try putting higher octane gas in it just to be sure.

jeremydde · Post by **jeremydde** » Sun Jul 01, 2007 8:37 pm

Sounds like an exhaust leak.

islandbayy · Post by **islandbayy** » Mon Jul 02, 2007 2:31 pm

Too late,

It went out in a blaze of glorious while smoke. Was pretty, but kinda sucks.

It was just barely under warrinty yet, got a brand new replacment engine on the way to pop in their ^_^

Still dont know what it was

I was thinking barings. idel'd smooth as *, aside for that noise @_@

Cheers!

Post by **noiseguy** » Wed Jul 04, 2007 6:31 am

I'd take it apart to see what happened. I'm betting it was either a crank or rod bearing as well.