I have an 88 with a Duke. Over the weekend I replaced the exhaust manifold due to a rather large crack. While I was at it I changed the O2 sensor and cut out the very clogged cat. Now i am getting valve clatter with light acceleration. Any ideas?
Posts: 1220 From: Johnson City , TN , USA Registered: Sep 2007
Is it a fluttering sound? Like detonation? My duke did that when the EGR wasn't working right.
You shouldn't have any valve noise while the engine is above idle that isn't there at idle. At idle the oil pressure is lowest, and therefore more likely to allow a lifter to bleed down if not lashed properly (and oil pressure is very low).
Mar 8th, 2008
White Spyder Member
Posts: 1047 From: Gluckstadt USA Registered: Sep 2007