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Valve clearance and sticky valve
- jbrewer73
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25 Jul 2015 10:40 #682678
by jbrewer73
Valve clearance and sticky valve was created by jbrewer73
morning all
got a 1978 kz1000 ltd that I need some help on.
so I had to go into motor to replace cam chain guide and while head was off figured I would do a valve job. Just lapped and new valve seals.
Bike ran fine before doing this.
I put back together and installed cams and went to rotate with the 17mm nut and heard a pop!...I know which valve because I had a small puddle of oil in there and seen the splash. Looked down and bucket was stuck down. Rotated a little more and another pop from the same bucket..it .popped back up. checked valve clearances and many valves had no clearance but the one stuck was in tolerance.
Any suggestions
thank you in advace
got a 1978 kz1000 ltd that I need some help on.
so I had to go into motor to replace cam chain guide and while head was off figured I would do a valve job. Just lapped and new valve seals.
Bike ran fine before doing this.
I put back together and installed cams and went to rotate with the 17mm nut and heard a pop!...I know which valve because I had a small puddle of oil in there and seen the splash. Looked down and bucket was stuck down. Rotated a little more and another pop from the same bucket..it .popped back up. checked valve clearances and many valves had no clearance but the one stuck was in tolerance.
Any suggestions
thank you in advace
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- missionkz
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25 Jul 2015 11:48 #682689
by missionkz
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
Replied by missionkz on topic Valve clearance and sticky valve
Could be a fouled up valve guide from your "lapping paste valve job" or simply a bent valve from installing the cams incorrectly and that sucks....or the bucket has a large burr and is getting hung up in the bore.
Most likely a bent valve though.
Most likely a bent valve though.
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- SWest
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- 10 22 2014
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25 Jul 2015 15:05 #682712
by SWest
Replied by SWest on topic Valve clearance and sticky valve
Open it back up.
Steve
Steve
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- jbrewer73
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25 Jul 2015 15:53 #682721
by jbrewer73
Replied by jbrewer73 on topic Valve clearance and sticky valve
Hey Steve
I opened up once and took valve out and cleaned extra good and inspected for straightness. It looked good and didn't feel any restriction.
I also did leak test on all valves and all was ok. Thought for sure that would do it. But nope...same damn thing.
So now im thinking maybe something to do with bucket???
Thanks
I opened up once and took valve out and cleaned extra good and inspected for straightness. It looked good and didn't feel any restriction.
I also did leak test on all valves and all was ok. Thought for sure that would do it. But nope...same damn thing.
So now im thinking maybe something to do with bucket???
Thanks
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- SWest
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25 Jul 2015 18:17 #682727
by SWest
Replied by SWest on topic Valve clearance and sticky valve
The valve keepers can be tricky. Some say you don't have to change them and I have reused them too. Sometimes they can look seated but not. I always tap on them to be sure they are. The manuals say to replace them.
I'd take another look.
Steve
I'd take another look.
Steve
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- RonKZ650
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28 Jul 2015 15:03 - 28 Jul 2015 15:06 #683168
by RonKZ650
321,000 miles on KZ's that I can remember. Not going to see any more.
Replied by RonKZ650 on topic Valve clearance and sticky valve
Same thing happened to me when I assembled using the wrong timing marks on the cams. Bent valves.
321,000 miles on KZ's that I can remember. Not going to see any more.
Last edit: 28 Jul 2015 15:06 by RonKZ650.
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