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Engine Breaks Up at 4,000 RPM and above
- jeffw
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1977 KZ650 B1 "Cafed"
4-1 & Pods, Electronic Ig. & Dyna Coils
forums.kz650.info/index.php?topic=9020.0 - SOLD :(
1982 KZ1100 A2 Stripper
kzrider.com/forum/11-projects/596850-198...100-a2-shaft-project
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- jackleberry
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The problem you describe sounds a bit like fuel starvation--have you confirmed that your petcock/fuelfilter/fuellines are delivering a decent amount of gas? Have you confirmed your carb fuel levels?
1997 KZ1000P (P16)
2001 KZ1000P (P20)
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- jeffw
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1977 KZ650 B1 "Cafed"
4-1 & Pods, Electronic Ig. & Dyna Coils
forums.kz650.info/index.php?topic=9020.0 - SOLD :(
1982 KZ1100 A2 Stripper
kzrider.com/forum/11-projects/596850-198...100-a2-shaft-project
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- jackleberry
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jeffw wrote: I have BS34 carbs with Velocity stacks w/ 4-1 exhaust. Maybe it is, but you would think by using the choke it would improve a little
The 'choke' means nothing at the rev range you're talking about...
1997 KZ1000P (P16)
2001 KZ1000P (P20)
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- daveo
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1982 KZ1100-A2
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- missionkz
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I suspect that if going from 130 to 132.5 stopped spitting and popping.... You fixed something you didn't know was wrong and a seriously doubt it had much if anything at all to do with going up one step in main jet size. LOL!daveo wrote: 130's seemingly should have been more than adequate for my 1100 with BS34 carbs (with the air box) :ohmy: , but until I put 132.5's in, it spat and popped at 6500 + rpm or so. Now its nothing but grrrr....past red line.
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- daveo
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missionkz wrote:
I suspect that if going from 130 to 132.5 stopped spitting and popping.... You fixed something you didn't know was wrong and a seriously doubt it had much if anything at all to do with going up one step in main jet size. LOL!daveo wrote: 130's seemingly should have been more than adequate for my 1100 with BS34 carbs (with the air box) :ohmy: , but until I put 132.5's in, it spat and popped at 6500 + rpm or so. Now its nothing but grrrr....past red line.
Nothing else was changed at the time...
1982 KZ1100-A2
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- missionkz
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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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Steve
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- jeffw
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1977 KZ650 B1 "Cafed"
4-1 & Pods, Electronic Ig. & Dyna Coils
forums.kz650.info/index.php?topic=9020.0 - SOLD :(
1982 KZ1100 A2 Stripper
kzrider.com/forum/11-projects/596850-198...100-a2-shaft-project
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- jackleberry
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jeffw wrote: I think I have I have found the problem, one of the pilot caps had fallen off. The o-ring must be worn out so I replaced it and put it back together and it seems to work great again. I was also slightly lean on the main jet, I was always assumed that using the choke might help indicate lean conditions but that must not be the case here.
Just to clarify, when you say "pilot cap", you mean the plug over the pilot jet inside the carb body and not the anti-tamper plug over the pilot mixture screw on the outside of the carb body, correct?
1997 KZ1000P (P16)
2001 KZ1000P (P20)
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- jeffw
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1977 KZ650 B1 "Cafed"
4-1 & Pods, Electronic Ig. & Dyna Coils
forums.kz650.info/index.php?topic=9020.0 - SOLD :(
1982 KZ1100 A2 Stripper
kzrider.com/forum/11-projects/596850-198...100-a2-shaft-project
Please Log in or Create an account to join the conversation.