4.6is compression numbers
What are the values to determine "good" compression on the M62 4.6? The previous owner did a compression test and the values were around 150.
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you are looking for numbers around 150 with cyl to cyl +- a few PSI. It is the ones way off that is the worry. not so much as "how high are they"
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okay cool. I drove the car back from BC to Reno not knowing the oil pickup was full of old timing guide debris and I pray that no damage was done to the motor. It runs great and has 152-155 compression on all cylinders still. I just get paranoid.
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Unless you were at 6,000 RPM the whole way you should be good.
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I believe I had 200-210 on all
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Just like the speedometer on cars can be KPH or MPH, the reading will be diifferent. |
Also, old school compression test was with carburetor throttle plates had to be wide open. Does one open the throttle body on the modern cars to do a test??
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Bimmerbreaker talked about having some oil starvation issues on his M62 that may have caused the rod bearings to fail. He mentioned "..sustained high-RPM driving uphill to Flagstaff " and bits of guide pcs as possible causes. |
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