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post #5 of (permalink) Old 20-04-2017, 21:14 Thread Starter
Bunsen Honeydew
Registered User
Join Date: Feb 2011
Car: Rover 45
Posts: 211

Is it possible to have zero compression with HGF but with a head that is not warped?

I went to do compression test and found that all four plugs had come lose.
#1 WOT returned 30 psi, other cylinders zero.
Added oil to each cylinder, #1 increased to 90 psi, rest still zero.

The oil is not emulsified and no mayo on oil cap. There is still enough oil in the crankcase to just touch the min mark, and the coolant level was above max when cold (suspect it has 0.7 liters of oil in coolant).

Does this sound like it has to be a warped head, or can HGF alone lead to zero compression?
Anyone every had smoke in crankcase but engine bottom end survived?
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