Hi there
The engine in my 1978 Pace Car has always made a ticking / knocking noise that quietens as the car warms up.
Putting in 20-50W with zinc did help make it quieter.
As such with hood down it was not really noticeable however I am now a little worried about it.
My reasoning is that today I change valve cover gaskets to fix an oil weep and when looking around the engine bay with engine running I noticed the tick/knock sound is present and it’s only present on the drivers side. Also if I hold the valve cover I can feel the tapping on the drivers side. On the passenger side I can’t feel anything.
As such I decided to make a short video of the noise:
My phone makes it sound worse then it is but the noise is easy to hear in the video.
To me it sounds like a worn lifter, maybe a stuck lifter or out of adjustment.
What do people here think?
It’s an L82 engine so I think it’s has hydraulic lifters.
Is it worth trying to adjust the valves with engine running, see a lot of videos online of people undoing the nut until it rattles and then tightening until it stops rattle and then re-tightening a further 3/4 turn. Is this valid for my engine and worth trying? Is an additive worth a try?
Or is it time for a set of new lifters?
The engine in my 1978 Pace Car has always made a ticking / knocking noise that quietens as the car warms up.
Putting in 20-50W with zinc did help make it quieter.
As such with hood down it was not really noticeable however I am now a little worried about it.
My reasoning is that today I change valve cover gaskets to fix an oil weep and when looking around the engine bay with engine running I noticed the tick/knock sound is present and it’s only present on the drivers side. Also if I hold the valve cover I can feel the tapping on the drivers side. On the passenger side I can’t feel anything.
As such I decided to make a short video of the noise:
My phone makes it sound worse then it is but the noise is easy to hear in the video.
To me it sounds like a worn lifter, maybe a stuck lifter or out of adjustment.
What do people here think?
It’s an L82 engine so I think it’s has hydraulic lifters.
Is it worth trying to adjust the valves with engine running, see a lot of videos online of people undoing the nut until it rattles and then tightening until it stops rattle and then re-tightening a further 3/4 turn. Is this valid for my engine and worth trying? Is an additive worth a try?
Or is it time for a set of new lifters?