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VERY SLOW to warm up No idea why???
- amele7
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'79 KZ650B3
'81 KZ1000J
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- timebomb33
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1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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- amele7
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'79 KZ650B3
'81 KZ1000J
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- Patton
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If carbs have side located pilot air screws, turn each screw in clockwise 1/4 turn.
If carbs have bottom located pilot mixture screws, turn each screw out counter-clockwise 1/4 turn.
If performance degrades, return screws to original settings.
Good Luck!
1973 Z1
KZ900 LTD
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- bill_wilcox100
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Best of success.
1977 KZ650-B1 (Stock)
Upgrades:
- Dyna S Electronic Ignition (DS2-2)
- Dyna 3 Ohm Coils (DC1-1)
- Coil Repowering Mod
- Progressive Springs Front & Rear
- Saddlemen Seat Cover
- New Metallic Red Re-Paint & Repro Badges.
Montreal, Canada
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- Silver
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- Old Bikes Are Better!
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1983 KZ750F1 LTD
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- bountyhunter
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I have a 79 KZ650. It starts fine with the choke on. However it takes at least 10 mins running with the choke on before its warm. Once its warm it runs like a champ, idles fine, everything great. Just wondering if anyone has the same problem or if this is normal. The bike is bone stock with about 10k miles. Even after riding for hours, it sits for 20 mins and then it takes a while to warm back up. The choke has to stay on for it to idle. Any suggestions???
I had that problem with my 750 when it was new because Kawi put 40 pilot jets in the Kali engines and they were WAYYYYY too lean. With 50 pilots, I only have to use the choke for maybe a minute at most and then it runs pretty well.
1979 KZ-750 Twin
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- amele7
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'79 KZ650B3
'81 KZ1000J
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- amele7
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'79 KZ650B3
'81 KZ1000J
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- Patton
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Changed the ignition, coils, wires and runs much stronger and smoother but still having the warm up problem. We figured out that way too much air was getting in through the carbs on the engine side. The black carb holders/gasket must have leaks, dry rotted or not sealed. Too much is getting through them. Has anyone had this problem?? Tried to get new ones from Z1 enterprises but they're out of stock
Am doubtful that intake air leak is reason for slow warmup because bike is reportedly otherwise performing well and would not do so with such leak.
Thinking either pilot circuit fuel passages and/or pilot jets remains partially ostructed, or needs larger pilot jets, or both, all toward enrichening fuel mixture in the pilot circuit (and presupposing that an attempt has already been made as earlier suggested to enrich by turning in side-located pilot air screws or turning out bottom-located pilot mixture screws -- as that's what these adjustment screws are designed for).
Could also check service fuel level (clear tube method) to assure float levels not being too low and causing a lean condition.
Good Luck!
1973 Z1
KZ900 LTD
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- chelms27
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1977 KZ1000...16k miles 2nd owner all original except tires, dyna-coil, and a vance and hines 4 to 1 exhaust.
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- timebomb33
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1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
I THINK MY POWERBAND BROKE
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