Change Of Oil To Stop Tapping?

[mrben]

Any recommendations of possibly what oil to change to try to stop hydrolic tappet from tapping? Just one of them taps under 2500 rpm, getting worse. I'v always used the comma 505.01 5w40 fully synth, and good 'Mann' filter. Bout 150k on car, don't know exact as speedo hasn't worked for yonks. (mk1 , v reg, 1.9tdi). Thanks in advance.

[chromedome]

I thought the 505.01 oil was only for the PD engine which the MK1 doesn't have. Maybe a different grade oil may help.

[mrben]

No it doesn't have the pd engine. I was advised to use the oil by a vw enthusiast, for lots of reasons, which none of i can remember now...

[cyborg]

Hi, Take your rocker cover off ,Then check your tappet's by pressing on them they should move down a couple of millimetres if one doesn't its likely that is causing you problem. if they all move then it's possible you have a worn cam.

[mrben]

ok thanks.