0 suction on carb 3 & 4 Boots good

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27 Sep 2006 16:37 #80109 by ridgerunner
0 suction on carb 3 & 4 Boots good was created by ridgerunner
I have no suction or vacuum or carb 3 & 4 on 79 650 kz. Compression is good 125 and 130. Any ideas? Thanks

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  • wireman
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27 Sep 2006 18:41 #80142 by wireman
Replied by wireman on topic 0 suction on carb 3 & 4 Boots good
are you holding throttle open?seems strange that you have decent compression on those cylinders but wont draw air in when you hold hand over carbs.are the carbs clamped into boots,are boots that bad?:whistle:

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27 Sep 2006 19:10 #80154 by ridgerunner
Replied by ridgerunner on topic 0 suction on carb 3 & 4 Boots good
Yes, the boots are fine. It's strange to me also. Do you think something could be wrong with the intake valve?

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27 Sep 2006 19:37 #80166 by Bob_79KZ
Replied by Bob_79KZ on topic 0 suction on carb 3 & 4 Boots good
Does it have those reed smog valves on top of the exhaust cam covers. If it does, one is stuck open, maybe.

Bob

Post edited by: Bob_79KZ, at: 2006/09/27 22:39

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27 Sep 2006 19:54 #80173 by ridgerunner
Replied by ridgerunner on topic 0 suction on carb 3 & 4 Boots good
Hey it does have smog valves on top of the covers. I'll try that tomorrow. Hope you are right. By the way I did clamp the vacuum line from the carbs to that valve. Would I still have the problem with the line clamped.
Thanks

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27 Sep 2006 20:11 #80178 by Bob_79KZ
Replied by Bob_79KZ on topic 0 suction on carb 3 & 4 Boots good
Yep...it would still not have much suction. I had same problem... I blocked off the smog passages and man what a difference.

Bob

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04 Oct 2006 15:30 #81824 by ridgerunner
Replied by ridgerunner on topic 0 suction on carb 3 & 4 Boots good
Thanks for the help guys. Taking off the smog stuff did help a lot but I cleaned the carbs again and its running ok now.

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