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93 Metro Low Compression doesn't raise when oil put in cylinders


JShawnA
11-06-2009, 06:30 PM
I have a 93 Metro 1.0 3cyl, it is hard to start, and doesn't idle well. Once it gets running it drives great when the RPMs are up. Today I got it warmed up and checked the compression.

#1 - 45
#2 - 110
#3 - 40

I then put about a teaspoon of oil into each cylinder and rechecked.

#1 - 50
#2 - 120
#3 - 45

Each cylinder didn't go up by much. Am I correct in thinking I may have a bad camshaft?

Crvett69
11-06-2009, 07:51 PM
you have 2 burned exhaust valves. head needs to be rebuilt or replaced and should do the rings at the same time

JShawnA
11-06-2009, 07:59 PM
Thanks for the reply. I'm guessing that must be a common problem on these engines? I have quite a few years of wrenching experience, but this is the 1st Metro I have owned. My 1st guess was worn camshaft lobes, but I could definitely see burned valves causing the same symptoms.

Crvett69
11-06-2009, 08:01 PM
never seen a cam lobe on a metro wear this far but seen lots of them burn valves

JShawnA
11-06-2009, 08:06 PM
Cool. I'll start tearing into it tomorrow. I'm debating buying a $500 JDM motor, or buying a complete rebuilt head for $200 and doing the rings/bearings myself.

Johnny Mullet
11-06-2009, 09:57 PM
These engines are easy to rebuild. I been a mechanic for years, but never did any kind of rebuilds until I got my Metro. Here are some helpful topics with pictures to help on your quest...........

1.0L Head Repair Guide (http://geometroforum.com/topic/638797/)

Detailed 1.0L Head Rebuild (http://geometroforum.com/topic/1299263/)

Extreme Metro Makeover (http://geometroforum.com/topic/2175380/)

Bottom End Rebuild (http://geometroforum.com/topic/2335235/)

The Weekend Rebuild (http://geometroforum.com/topic/1144189/)

You can also find more info here............. Indexus Metrogloditus (http://www.automotiveforums.com/vbulletin/showthread.php?t=938134)

Good Luck!

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