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Help, bad comp test results

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rocafellafw

15+ Year Contributor
357
0
Dec 24, 2008
Philadelphia, Pennsylvania
First the car smoked bad when it started, got worse as I drove so I go to shut it down but it died before I can do it myself. Coolant filled my catch can and when I pulled the dipstick a big puff of air came out and it was very foamy. Today we pressure tested the water system, held 17psi for 10 minutes then bled it. Next we did a compression test and got HORRIBLE results. Cyl 1 = 90psi, Cyl 2 = 95, Cyl 3 = 90, and Cyl 4 = 120 psi. We did the test with the valve cover off does that matter ? We were wot during the test and the injectors were unplugged along with the coil pack plug. As we speak we are trying a wet test in cyl 1 to test the rings. Any advice or suspect to these results would really help. Sorry for bad grammer I'm typing this all from my phone. Wet test gave on average about a 20psi gain but all still on or below the service limit
 
if your coolant came out kinda foamy maybe the head gasket have you drained your coolant to check for contamination? or the oil pan
 
Have not started it yet again due to the fact it died on me and I'm scared to. Have not drained the oil yet. I'm scared the rings are bad with the huge psi jump after adding oil and doing a comp test . Next things we are doing are checking the timing, the oil, and hopefully can get ahold of a leakdown tester. What's another method of testing piston rings ? Any more help would be appreciated.
 
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