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compression deppression

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kwaka
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compression deppression

#1 PostAuthor: kwaka » Sun Jun 01, 2008 9:29 am

Hi fellas, after rebuilding the motor on the Z1B we noticed a bit of smoke out the exhaust on a recent run. The bike has only 200 miles on the engine, it had the heads recond. new rings, but the bore was only honed. I did a compression test and got a reading of only 90 PSI per cylinder, squirt of oil made no difference. The local mech. says it still needs time to bed in. What do you think??
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Pigford
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#2 PostAuthor: Pigford » Sun Jun 01, 2008 10:12 am

Just rebuilt mine, and it does smoke a tad first 30 seconds.....
Don't panic until its done a few 100 miles.... unless it gets worse & worse :shock:
Give it time to bed in and hopefully it'll be OK.
And on the 7th day... Zeds were created!
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Hack
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#3 PostAuthor: Hack » Sun Jun 01, 2008 10:46 am

Did you remember to hold the throttle fully open when carrying out the compression test?

Scared myself with that one on more than one occassion!
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kwaka
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#4 PostAuthor: kwaka » Sun Jun 01, 2008 12:39 pm

errr thanks hack, i'll try a second time :oops: . That's why i love this forum :D
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chrisu
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#5 PostAuthor: chrisu » Sun Jun 01, 2008 1:09 pm

warm engine as well..................
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kwaka
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#6 PostAuthor: kwaka » Mon Jun 02, 2008 9:27 am

All's well, 1&4 150 PSI, 2&3 140 PSI.
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