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78 kz400 c1 help!!!
- Drafter89
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18 Apr 2016 16:31 - 18 Apr 2016 16:35 #721633
by Drafter89
78 KZ 400 C1-Daily Driver
New Albany,IN
78 kz400 c1 help!!! was created by Drafter89
This all happened after I replaced my negative wire that goes to my frame so this might be an electrical topic...idk, but something is telling me its a fuel delivery issue. Fired my bike up and it sat at idol just fine and seemed to be ok. I shut it off after it warmed up. Tried to fire it back up again and it took me about 20 minutes of kicking to get it started again and it kept back firing really loud!! It seriously sounded like a shotgun going off. Now it won't start at all and just keeps backfiring. I have spark, idk what it could be. It ran just fine before I don't get it??? Oh, I have an aftermarket exhaust on it without the baffle in and the carb has been rejetted. And it also got really hot here lately where im from idk if that gas something to do with it? Its ran fine for months. Please help??
78 KZ 400 C1-Daily Driver
New Albany,IN
Last edit: 18 Apr 2016 16:35 by Drafter89.
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- SWest
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18 Apr 2016 16:39 #721635
by SWest
Replied by SWest on topic 78 kz400 c1 help!!!
I sound like a broken record but have you checked the valves? Also the spark advance, points?
Steve
Steve
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- Drafter89
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18 Apr 2016 16:45 - 18 Apr 2016 16:46 #721638
by Drafter89
78 KZ 400 C1-Daily Driver
New Albany,IN
Replied by Drafter89 on topic 78 kz400 c1 help!!!
I thought about that but with my experience i wasn't sure if that could be apart of the problem. No I have not. I'm going out there to check right now.
swest wrote: I sound like a broken record but have you checked the valves? Also the spark advance, points?
Steve
78 KZ 400 C1-Daily Driver
New Albany,IN
Last edit: 18 Apr 2016 16:46 by Drafter89.
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- jdvorchak
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19 Apr 2016 05:09 #721699
by jdvorchak
Don't fix it until it's broken.
John
83 KZ550M1
83 KZ1100LTD
Also own:
2010 Harley Ultra Classic Limited, 2008 Harley low rider 71 CB350/sidecar
Replied by jdvorchak on topic 78 kz400 c1 help!!!
If this were a 4 cylinder engine I'd say you have two plug wires crossed. but since this is a 2 cyl ?
Try removing both plugs and kicking it over a few times, with the throttle wide open and fuel shut off, just in case you have it really flooded.
Try removing both plugs and kicking it over a few times, with the throttle wide open and fuel shut off, just in case you have it really flooded.
Don't fix it until it's broken.
John
83 KZ550M1
83 KZ1100LTD
Also own:
2010 Harley Ultra Classic Limited, 2008 Harley low rider 71 CB350/sidecar
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19 Apr 2016 06:58 #721725
by martin_csr
Replied by martin_csr on topic 78 kz400 c1 help!!!
Is the new ground wire the same as the old & did you install it exactly the same?
And is it grounded to the frame or to the engine?
And is it grounded to the frame or to the engine?
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- Kidkawie
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19 Apr 2016 07:02 - 19 Apr 2016 07:03 #721728
by Kidkawie
1975 Z1 900
1994 KX250 Supermoto
2004 KX125
Replied by Kidkawie on topic 78 kz400 c1 help!!!
If it ran fine before replacing the neg cable then it's something you did, or disturbed. Is the battery fully charged? My Z1 runs like crap with a bad battery.
1975 Z1 900
1994 KX250 Supermoto
2004 KX125
Last edit: 19 Apr 2016 07:03 by Kidkawie.
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