If it is piston slap, mine has done it from day one. Live with it, it won't hurt anything.
2000 Vette with top end noise
Thread Starter
3rd Gear
Joined: Nov 2008
Posts: 3
Likes: 0
2000 Vette with top end noise
32k miles on my 2000 vette.. making noise on top end. Noticed it when cold, goes away when warm and when increasing idle. Thought at first it was a lifter but heard injectors sometimes make noise...thought I read a cold start injector could make noise??? Doesn't appear to be the belt tension pulley. Appreciate the input.
Race Director
Joined: Aug 1999
Posts: 11,113
Likes: 669
From: SE Pennsylvania
St. Jude Donor '03 thru '26
Oldtimer
LS-1 are notorious for piston slap. Sounds a lot like a slight tap or knock when cold and disappears when warmed up. Try a can or two of BG44K in a tankful of fuel. It might go away if it's piston slap.
Burning Brakes
Joined: Oct 2003
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From: Foresters Falls(near Ottawa) Ont
Melting Slicks
Joined: Oct 2006
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From: Fredericton NB
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Burning Brakes
Joined: May 2008
Posts: 858
Likes: 10
From: Chandler AZ
St Jude Donor '14
http://www.bgprod.com/products/fuelair.html
BG 44K®
BG 44K® Power Enhancer®
BG 44K® Power Enhancer® safely, rapidly and thoroughly removes engine deposits in combustion chambers, intake manifolds, ports and on valves. It restores flow in fuel injectors and cleans the entire fuel system. BG 44K® Power Enhancer® improves fuel economy and reduces exhaust emissions. It restores that “like new” driveability to an engine’s performance and keeps it running better, longer and more efficiently. Add one can or bottle to fuel tank at fill up. Catalytic converter and oxygen sensor safe. NOTE: After cleanup with BG 44K® Power Enhancer,® regular use of BG Supercharge®II, Part No. 202, in gasoline engines or BG Diesel Fuel Conditioner with DPL, Part No. 2276, in diesel engines will prevent deposits from forming in the fuel system and upper engine for maximum driveability and fuel economy.
Part No. 208
Part No. 208A 11 oz. (325 mL) can
11 oz. (325 mL) bottle
Drifting
Joined: May 2006
Posts: 1,608
Likes: 11
From: Aliso Viejo So. Cal.
I googled it. I don't see how cleaning the fuel system will help with piston slap?
http://www.bgprod.com/products/fuelair.html
BG 44K®
BG 44K® Power Enhancer®
BG 44K® Power Enhancer® safely, rapidly and thoroughly removes engine deposits in combustion chambers, intake manifolds, ports and on valves. It restores flow in fuel injectors and cleans the entire fuel system. BG 44K® Power Enhancer® improves fuel economy and reduces exhaust emissions. It restores that “like new” driveability to an engine’s performance and keeps it running better, longer and more efficiently. Add one can or bottle to fuel tank at fill up. Catalytic converter and oxygen sensor safe. NOTE: After cleanup with BG 44K® Power Enhancer,® regular use of BG Supercharge®II, Part No. 202, in gasoline engines or BG Diesel Fuel Conditioner with DPL, Part No. 2276, in diesel engines will prevent deposits from forming in the fuel system and upper engine for maximum driveability and fuel economy.
Part No. 208
Part No. 208A 11 oz. (325 mL) can
11 oz. (325 mL) bottle
http://www.bgprod.com/products/fuelair.html
BG 44K®
BG 44K® Power Enhancer®
BG 44K® Power Enhancer® safely, rapidly and thoroughly removes engine deposits in combustion chambers, intake manifolds, ports and on valves. It restores flow in fuel injectors and cleans the entire fuel system. BG 44K® Power Enhancer® improves fuel economy and reduces exhaust emissions. It restores that “like new” driveability to an engine’s performance and keeps it running better, longer and more efficiently. Add one can or bottle to fuel tank at fill up. Catalytic converter and oxygen sensor safe. NOTE: After cleanup with BG 44K® Power Enhancer,® regular use of BG Supercharge®II, Part No. 202, in gasoline engines or BG Diesel Fuel Conditioner with DPL, Part No. 2276, in diesel engines will prevent deposits from forming in the fuel system and upper engine for maximum driveability and fuel economy.
Part No. 208
Part No. 208A 11 oz. (325 mL) can
11 oz. (325 mL) bottle
I'm with you, how will cleaning the fuel system help with piston slap? 
