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06-05-2013, 03:25 PM
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#1 |
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Not Yet Wild
Join Date: Jul 2012
Posts: 54
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1991 Yamaha g2 compression reading 100 psi
Either a 91 or 92. Compression test done several times at full throttle. Valve adjustment fine. Reading will jump up to 150 psi if I put oil in combustion chamber. It is not smoking but does burn through a little oil. Piston rings?
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06-05-2013, 04:51 PM
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#2 |
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Gone Wild
Join Date: Jul 2012
Location: Pigeon Forge TN
Posts: 209
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Re: 1991 Yamaha g2 compression reading 100 psi
That would indicate that the rings and or cyl is bad. Worn rings or worn cylinder.
Bob T |
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06-05-2013, 07:18 PM
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#3 |
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Not Yet Wild
Join Date: Jul 2012
Posts: 54
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Re: 1991 Yamaha g2 compression reading 100 psi
ok. throw some gear oil in the crank case to build compression. might as well huh
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06-05-2013, 07:27 PM
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#4 |
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Gone Wild
Join Date: Jul 2012
Location: Pigeon Forge TN
Posts: 209
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Re: 1991 Yamaha g2 compression reading 100 psi
You could try using a straight 30 weight. You get too thick and you will probably burn it up.
Bob T |
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