77 oil in piston, no compression

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Rupesy
Posts: 66
Joined: Thu Apr 29, 2010 10:20 pm
Your car is a: 1977 Spider
Location: Houston, TX

77 oil in piston, no compression

Post by Rupesy »

So my timing belt project (gear, tensioner and belt) has not turned out as good as I thought it would. After I got everything back together and started it up, it actually ran much better than it has before and I can actually get it to idle at low rpms without stalling. But did sound a little funny and blue smoke pours out the exhaust. I looked inside all cylinders and cylinder #1 actually has blue smoke come out of the hole and when it clears it looks like a lake of oil in there. I checked compression and there is ZERO. Doesn't even move when I am turning the engine.

So what kind of failure do we have here? I obviously botched something. Should I start pulling the heads?

Good news is I have a week and a half to fix it before my daughter gets home from vacation!
'77 Fiat Spider
'79 Porsche 928
'83 Jeep CJ7
'04 Chevy Suburban
'04 BMW Z4
'00 Porsche Boxster
djape1977
Posts: 985
Joined: Sat Apr 21, 2012 6:08 pm
Your car is a: 1970 fiat 124bc
Location: Belgrade, Serbia, eastern Europe

Re: 77 oil in piston, no compression

Post by djape1977 »

check if spark plug is screwed in correctly. if it is, pull he head
So Cal Mark

Re: 77 oil in piston, no compression

Post by So Cal Mark »

hard to believe it idles well if you have a dead hole. Do a leakdown test to find where the compression loss is; crankcase, intake or exhaust
chrisfiat
Posts: 141
Joined: Tue Mar 24, 2009 6:52 pm
Your car is a: 1976 124

Re: 77 oil in piston, no compression

Post by chrisfiat »

mine idled well on 3 of course after i removed the head and had the burned valve replaced i had to re adjust the carb, time to pull the head, it is an easy job, my one recomondation is to get socal marks head studs, nothing kills a mood like an old bolt that will not torque properly, just had that happen last month, and the studs are cheaper than a set of bolts
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