hydraulic tappet?

markv70driver · Post by **markv70driver** » 01 Jun 2005, 13:53

Hi everyone i havea v70 2.5 diesel on a 2000 plate the old shape. and every time i start it one of the tappets clicks just the once there are no other symptoms just the one annoying click which is difficult to hear from inside the car. My question is will this be expensive to have repaired. will the camshaft have to come out. is there an additive i can add to the oil in the meantime. any help would be appreciated. Mark

Guest · Post by **Guest** » 01 Jun 2005, 14:09

Years ago they suggested "mystery oil" for lifters. I'm not sure if it is even made today

White850Turbo · Post by **White850Turbo** » 01 Jun 2005, 18:21

Something that people have used with great success to quiet valvetrain noise is Auto-RX. I personally have used the stuff and while I didn't have any top end noise, the top end is clean as a whistle now. Very good stuff.

Guest · Post by **Guest** » 10 Jun 2005, 11:05

Guest · Post by **Guest** » 10 Jun 2005, 11:07

hi everyone dont laugh but it wasnt my hydraulic lifters after all it was my alternator belt tensioner so nothing to worry about.

Guest · Post by **Guest** » 13 Jun 2005, 11:45

So..did you just tighten the tensioner...or replace it?

Guest · Post by **Guest** » 13 Jun 2005, 13:22

is it possible to tighten them to stop them from knocking on cranking?