annoying taping noise
#1
annoying taping noise
I recently rebuilt my 95 wrx with a new crank, bearings and various bits but i am getting a tapping noise when cold which dies down when it warms up.
I doubt it is the bottom end because i plastigauged the bearings and they are within specs. I have now done 300 miles and it is still tapping when cold. What could it be???
I doubt it is the bottom end because i plastigauged the bearings and they are within specs. I have now done 300 miles and it is still tapping when cold. What could it be???
#5
would it be worth checking the tensioner pulley? I am 99% sure the bearing on the pulley is ok but i might have tensioned it wrong.How do you know when the belt is tensioned correctly?
cheers for the replies
cheers for the replies
#6
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my scoob often taps on start-up.......cant decide whether its tappety or piston slap (never had piston slap before so not exactly sure wot it sounds like )
BUT, if I stop the engine and restart i acouple of seconds later, the noise aint there and all is well!
BUT, if I stop the engine and restart i acouple of seconds later, the noise aint there and all is well!
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#8
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iTrader: (5)
I assume you re-compressed the tensioner and inserted a retaining pin which you then removed after re-fitting the tensioner, to tension the belt? There is a set procedure for compressing the tensioner piston which is a slow and deliberate task. failure to do this may cause damage and render the tensioner U/S
On the other hand, it may just be some piston slap!
JohnD
On the other hand, it may just be some piston slap!
JohnD
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