I have put my cylinder head on my 16 valve 3 times now and the intake valves keep contacting the pistons. turning the engine by hand the marks come up perfect .I hand turn the engine 10 times. there is something weird going on does anybody know of something i can check?

Re-post this on the tech side you'll get losts of answers.

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"It's normal for these things to empty your wallet and break your heart in the process."
2012 SLK 350
1987 420 SEL

This is his 3rd post of the same question that I know of

You will get more help if you state what car and engine it is.

Mike

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra

mercedes 16 valve refers to the 201.034 chassis