1995 ka24de *pinging noise* - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Dream240 · 06-04-2005, 09:55 AM

Does the pinging get faster when you rev up the engine? Or is it a constact sound from idle to 2000rpms? Also does it ever completely go away?

My guess is you have either a floating valve (bad valve spring), loose timing chain, or worn valve guides (causing the valve stem to rattle at low rpms, too much clearance in there).

Does your car blow blue smoke? A sure fire way to eliminate bad valve guides is to take your car out to a hill, punch the gas to about redline then back off, do this 3 times. Then stop and check to see if you have a trail of blue smoke behind you....if so it's worn guides.

Good luck.

06-04-2005, 09:55 AM	#1
Dream240 Nissanaholic! Join Date: Dec 2002 Location: Inland Empire, California Age: 46 Posts: 2,188 Trader Rating: (8) Feedback Score: 8 reviews	Does the pinging get faster when you rev up the engine? Or is it a constact sound from idle to 2000rpms? Also does it ever completely go away? My guess is you have either a floating valve (bad valve spring), loose timing chain, or worn valve guides (causing the valve stem to rattle at low rpms, too much clearance in there). Does your car blow blue smoke? A sure fire way to eliminate bad valve guides is to take your car out to a hill, punch the gas to about redline then back off, do this 3 times. Then stop and check to see if you have a trail of blue smoke behind you....if so it's worn guides. Good luck. __________________ Don't mess with my monkey...he's loaded.