Ever hear of "GM upper end cleaner" ?
#11
Forum Regulator
VIP Member
So you are telling me I can pull off the Flame Arrestor on my 500EFI, mist in some distilled water, and maybe gain a few ponies?
#17
Charter Member #1055/Moderator
Charter Member
Water works well. Most engines will clean themselves up if run at high rpm's for a while. Carbons not a typical problem for a performance engine unless you have carb problems or burn oil. If you are carboned up I would use the water mist, with the engine at operating temperature, then take it out and run it WOT for a while.
__________________
[img][/img]
[img][/img]
#18
Charter Member
Charter Member
If you ever pull the heads off of an engine and find a real clean spot on top of some pistons, you'll find an exhaust manifold or riser leaking water onto the piston. So it only makes sense that water sprayed into the carb will clean all of the pistons. Merc also sells their version, used to be called engine cleaner. Valve Tek has one too.
#20
Originally posted by BTJ88
Does this work for that? I've been noticing that damn knocking more and more lately.
Does this work for that? I've been noticing that damn knocking more and more lately.
, and it will not affect the life of the motor. Other people say it's carbon buildup, and to try the top end cleaner. Others have said it's piston slap.
Anyone else have problems with the 6.0 knocking at start up ??