Scotty I have a 2001 Honda Civic 1.7 auto I just bought with 112k. Motor has been very well…
I have a 2001 Honda Civic 1.7 auto I just bought with 112k. Motor has been very well maintained with frequent oil changes and runs great with no check engine lights or low oil pressure lights or leaks. Just did a full timing belt job with new tensioner and WP as well as seals and rocker adjustment.
Currently I am using 0/20 edge as our Winters are very cold here in Minnesota.
Motor does have a new exhaust manifold as the original one I found cracked.
I have inspected the insides of the oil filters and found no engine metal fragments
The noise sounds like a constant type writer type noise or a light lifter tap at throttle tip in. Idle the noise is not there.
It is not a loud rod bearing noise but more of a over clearanced valvetrain.
The rockers are adjusted correct at .009 on the exhaust and .007 on the intake.
If I try and pin point the noise it's more on the driver's side.
The alternator is original and the bearings are shot but not sure if this can cause a consistent taping noise that goes up and down with engine speed.
I have tried un plugging one coil at a time trick with engine running to diagnose but noise is still heard.
Any ideas on how to confirm this is piston slap without taking the engine apart. BTW it has made this lite tapping noise ever since I bought it with 112k on it. It now has 119k currently. Does not use oil and spark plugs are clean.