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At whits end
- Gidian9
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Anyway this is what she is doing; The idol is erratic but only slightly, however, the two cylinders are putting out at different pressures. (the compression on both cylinders seems fine) Putting my hands behind the exhaust the left cylinder seems to put out even but soft pressure at idol while the right side really chops. I have adjusted the idol and even tried adjusting the carbs to no avail. When the right is adjusted nothing really happened but adjusting the left killed the bike.
When I give the bike gas, only a small tweak of the throttle will rev the bike several hundred rpm, slowly back down to idol and die.
Please God can anyone help me figure this out!!
1982
KZ440 LTD
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- BSKZ650
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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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- MFolks
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Does your bike have points or an electronic ignition? If points, they need to be properly gapped and the dwell set.
If you have an electronic ignition check for loose,corroded or overheated connections.
The mechanical advancer need to be checked for operation as if it is sticking the ignition system cannot retard and advance with the rpm change. The points should be under a small cover on the side of the engine and the advancer is attached to the end of the crankshaft.
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)
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- Patton
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OK I have a 1982 Kz440 that decided it was not going to run right a bit ago no matter how much I beg. I just got done removing the carbs, soaked them, blew them out, dried them, prayed over them, and sacrificed a goat to the gods of mechanics and it did not fix the problem. Guess I shouldn't have skimped on the goat.
Anyway this is what she is doing; The idol is erratic but only slightly, however, the two cylinders are putting out at different pressures. (the compression on both cylinders seems fine) Putting my hands behind the exhaust the left cylinder seems to put out even but soft pressure at idol while the right side really chops. I have adjusted the idol and even tried adjusting the carbs to no avail. When the right is adjusted nothing really happened but adjusting the left killed the bike.
When I give the bike gas, only a small tweak of the throttle will rev the bike several hundred rpm, slowly back down to idol and die.
Please God can anyone help me figure this out!!
Would first remove the sign.
Next would spray water mist onto exhaust header pipes while engine is running -- does water sizzle and immediately evaporate off both pipes, or perhaps only on the right side? Please let us know so we may decide how best to proceed with diagnosis.
The waterspray test is to determine whether combustion is happening in both cylinders. If not, the issue might be a faulty sparkplug, or other ignition component problem, or a compression problem, unrelated to carbs.
Remove sparkplugs and hold their bases against the head while spinning the engine over (as in otherwise normal cranking procedure with ignition switched on), and look for a good fat blue spark on both plugs.
Assure battery fluid levels are correct and that it is fully charged, with clean tight cable connections.
Would also do a true compression test and assure correct valve clearances.
The idea is to first assure a good quality spark and acceptable compression before addressing removal of remaining goat hair in the carb pilot circuits.
Good Luck!
1973 Z1
KZ900 LTD
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- JR
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when done, a carb synch would then be very much in order.
All this only after following the suggestions above.
Oh, and dont forget to put an inline fuel filter in the gasline if not there already.
Cheers
1980 kz750E1, Delkevic exhaust
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