Thread: 240 Bad camshaft torque?
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Old 09-19-2022, 07:01 AM   #3
Janspeed
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Join Date: Sep 2005
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The last thing that was done to the car was adjusting valve lash. (not a surprise it the car has been running on LPG for a long time)
The lash will have been tight. The mechanic will have replaced the shims with thinner shims to get back to lash specifications.
maybe you can remove the valve cover and visually inspect the valve springs and the shims. (something could have gone wrong, maybe one shim has jumped out of it's bucket?)
You can also test if any cam bearing caps are lose.

If the running engine makes a strong ticking sound in the rhythm of engine revs then maybe also check the exhaust for leaks (between head and exhaust manifold and between manifold and pipe). A blown gasket in the exhaust system can produce ticking sounds that may sound like a mechanical problem.
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