Bogging at 7,000 rpm

  • pete greek1
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Re: Bogging at 7,000 rpm

02 Jun 2015 12:40
#674998
What kind of Motor oil are you using ? ....is it JASO/MA, certified? If not, your clutch can be slipping
Pete
1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!
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Re: Bogging at 7,000 rpm

02 Jun 2015 14:20
#675011
Switched the 4th cylinder plug with the 1st cylinder plug, and the issue did not carry over to the 4th cylinder. This seems to be specific to the 1st cylinder. Pipe is not running hot like the other three. Pulled the carbs for a rebuild, sounds like missionkz may be right.
1982 KZ550 LTD C3

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Re: Bogging at 7,000 rpm

02 Jun 2015 14:22
#675012
Pete, there was some regular automobile oil in her. Did an oil change today, and nothing but motorcycle oil was used this time.
1982 KZ550 LTD C3

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Re: Bogging at 7,000 rpm

02 Jun 2015 14:52
#675015
Switch spark plug caps with one and four.
www.kzzone.com/ cavanaughracing.com/kzdata.html www.mtceng.com/index.php/us-dealers/44-f...-performance-orlando
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Re: Bogging at 7,000 rpm

02 Jun 2015 15:07
#675018
Peter, I really wish I though of this before I removed the carbs. Will rebuild and if the issue persists, then I will try switching the plug caps.
1982 KZ550 LTD C3

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  • Randombeat
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Re: Bogging at 7,000 rpm

02 Jun 2015 15:16
#675019
Sounds like it's in your carbs, there's several good posts on cleaning them well, if your not familiar with CV carbs and all their passages, do some searching....

Making ensure all the passages and jets (some of these CV carbs have 3 jets in each carb), is critical to getting things right.... Also search "clear tube" to learn how to set the levels correct...

Hope you get it going, report back after any updates so we can help!

Chris
1980 KZ750H LTD-- pods-- vance & hines 4-1 --speedo/tach/blinker/switch deletes -- brat style
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