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Compression Test Results Confuse Me 200 1989

posted by  someone claiming to be Mike on  Mon Oct 4 18:28 CST 2004 [RELATED]

This 245DL non-turbo has 182k miles and runs well. As discussed previously, I wanted to get a baseline compression in case I ever have a problem, I know what's normal for my car.

Someone contacted me off list and suggested that I put oil into the spark plug holes and retest the compression.

Compression (in psi) before oil)
#1 166, #2 149, #3 168, #4 164; avg 162

I cleaned my fuel injectors and combustion chambe by introducing Greased Lightning Fuel Injection Cleaner into the intake manifold.

Compression was as follows:

#1 175 psi, #2 150 psi

then added motor oil into spark plug and tested #1 and #2:
#1 185, #2 170

What's this all mean?






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New Compression Test Results Confuse Me [200][1989]
posted by  someone claiming to be Mike  on Mon Oct 4 18:28 CST 2004 >


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