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Old 06-13-2002, 12:58 AM
joebnz joebnz is offline
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Join Date: Mar 2002
Location: Oregon
Posts: 28
Question M104 ticking sound after work performed

I serviced the transmission and when finished, during engine running to check ATF level I noticed a ticking sound from top end which I don't believe was there before. My question, can damage happen to the valve train if the engine is rotated backwards? I think I got turned around when underneath and when rotating engine to align TC drain plug, went backwards about 20 degrees. I changed the engine oil afterwards to see if clean oil would eliminate problem, no help. Running Castrol 20-50. I read another post that suggested one quart of ATF in engine. Is it time to pull the valve cover? Help!!!
My evolution with Benz's
'77 240D
'87 420SEL
'90 300CE
'92 500SL 43k
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