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kz900 strange engine noise
- OldSchoolHr
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- Kawasaki z900a4 1976 Croatia, Europe
I will put some videos so you can here this sound. First video is when I start cold engine. When engine is cold it sounds ok, there is no sign of this slaping or knocking sound at idle (about 100 knocks in minute).
Second video is when engine is hot and there is that sound in the background (clack-clack-clack...) Above 2000rpm I cant here that weird sound. Just when engine is hot and below 2000rpm.
Does someone got any idea?
Sorry for my english, Ill bet that is better than yours Croatian
My Gallery - www.wix.com/limit2/z900
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- fixer5000
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1978 kz650b pretty much stock
\\\\\\\" get there fast but arrive alive \\\\\\\"
massachusetts
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- PLUMMEN
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Still recovering,some days are better than others.
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- Old Man Rock
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As mentioned, take off the valve cover and visually inspect... Have a look at the inside of the valve cover, see it you can find where something has been hitting it especially on the cam cap areas (sides).
Inspect the cam end cap areas to see if the camshafts themselves have shifted over to close to on side or the other.
Manually rotate the crankshaft and inspect the shims under each cam lobe.
One tool that is very useful and cheap as well.... I got mine and Kano's at Harbor Freight Tools for $2.99....
1976 KZ900-A4
MTC 1075cc.
Camshafts: Kawi GPZ-1100 .375 lift
Head: P&P via Larry Cavanaugh
ZX636 suspension
MIKUNI, RS-34'S...
Kerker 4-1, 1.5" comp baffle.
Dyna-S E.I.
Earls 10 row Oil Cooler
Acewell 2802 Series Speedo/Tach
Innovate LC1 Wideband 02 AFR meter
Phoenix, Az
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- OldSchoolHr
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- Kawasaki z900a4 1976 Croatia, Europe
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If it is a matter of life or death I would swore that the sound coming from the transmission :S But the transmission smoothly selects all the speeds and never happened to fail. Clutch is working ok and sound does not change when squeezing clutch lever. I can here slapping even when engine is in neutral or when is in the gear.
I thought someone would recognize that sound so I do not have to wander about all possible and impossible things about that.
The only thing that is left to check is the cam chain and timing parts. If I dont find anything then engine goes to the reparation table.
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- tinlizzie37
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Bob KZ 650 E1, En 450
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- Grantl
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- KZRider is Da Bomb!!!
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1981 KZ1000 CSR
1983 KZ750 Project Bike
1990 550 Zephyr
1994 KZ1000 P
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- Link14
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- chance
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- Beatpoet
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Syncing the carbs helped a bit too.
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- OldSchoolHr
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But I realy think that this isnt sound of bad cam chain. In the meantime I noticed another strange thing. When I hold motorcycle on the side stand or straight it knocks, but when I lean motorcycle to the right side, knocking sound immediately disappears. This is fuc*ing unbelievable.
I realy think that I have some kind of problem with starter clutch. I visually checked the starter clutch, but I think I'll have to dismantle the entire circuit, rotor, starter clutch and gear and review it.
I really dont know what else could be the problem
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- trianglelaguna
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I ordered a cam chain and I am waiting to come from z1e.
But I realy think that this isnt sound of bad cam chain. In the meantime I noticed another strange thing. When I hold motorcycle on the side stand or straight it knocks, but when I lean motorcycle to the right side, knocking sound immediately disappears. This is fuc*ing unbelievable.
I realy think that I have some kind of problem with starter clutch. I visually checked the starter clutch, but I think I'll have to dismantle the entire circuit, rotor, starter clutch and gear and review it.
I really dont know what else could be the problem
1976 KZ900
2003 ZX12R
2007 FZ1000
2004 ninja 250R for wife
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