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compression test
- rayellis
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I was planning on doing both(top and bottom) anyway but a friend had questioned on why not do a compression test first .At least see what we have to work with.
BTW this was also a good reason to check out electrical system.Starter works great but no fire to plugs?
This is the 1980 KZ750E or SCUBA bike as we call it.This bike went under water!
Thanx
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- Patton
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Just did a compression test yesterday and had 180# on cyl. 3,4,2, but 1 only had 90#. Re-tested today and with a little motor oil I was getting 120#. As it stands now I need to do a top end rebuild....
Or valve clearance adjustments on #1 cylinder.
Good Luck!
1973 Z1
KZ900 LTD
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- gane
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[img][/img] 1977 KZ1000A1
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- BSKZ650
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I would check the vlave clearance like was said before, and chase down the elct. problems.
I would get it running first, then make a decision on what needs to be done to fix it.
77 kz650, owned for over 25 years
77 ltd1000, current rider
76 kz900, just waiting
73 z1,, gonna restore this one
piglet, leggero harley davidson
SR, Ride captian, S.E.Texas Patriot Guard Riders.. AKA KawaBob
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- chance
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- Life long biker/
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- rayellis
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- mzandmz
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New to Family, 1979 KZ440 LTD
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- rayellis
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- roy-b-boy-b
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I have bad valve stem seals and i could see oil build up on the exhaust valve that was low.
I put some ringfree in the gas tank and have about two hours of running the engine and riding.
The cylinder pressure has come up 90 lbs.
I still have to install valve stem seals.Roy
1979 LTD Street Fighter.1977 KZ1000
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- dejavoodo41
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1977 KZ1000A With 1980 KZ1000A MKII engine, Wiseco 1105 kit, Dyna S Ignition, 3 Ohm Dyna Coils, Cams, Mikuni RS34 Carbs, Vance and Hines Pro Pipe with Comp Baffle
New Smyrna Beach, FL
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- bountyhunter
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Same thing got my 750. You may notoce the valve clearance actually get wider as the gunk builds up and the valve doesn't fully close.I installed a MarkII engine on my bike and i had one cylinder down on pressure after checking valve clearance.
I have bad valve stem seals and i could see oil build up on the exhaust valve that was low.
1979 KZ-750 Twin
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