1987 kawasaki 454 won't go over 55 mph or 5000 rpm

  • lifesvr1018
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1987 kawasaki 454 won't go over 55 mph or 5000 rpm

04 Jul 2012 17:23
#533855
I recently had carb cleaned by mechanic and now kawasaki 454 will not exceed 55 mph.

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  • faffi
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Re: 1987 kawasaki 454 won't go over 55 mph or 5000 rpm

04 Jul 2012 18:58
#533865
Could be several things. If the ignition advance is mechanical it can have become stuck, although not the most likely cause here. More likely, your mechanic made a mistake of some sort, like rupturing a carb diaphragm.
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  • lifesvr1018
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Re: 1987 kawasaki 454 won't go over 55 mph or 5000 rpm

05 Jul 2012 00:01
#533922
I will take a look at the carb diaphragm. Is there anything in particular I need to look for?

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  • MFolks
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Re: 1987 kawasaki 454 won't go over 55 mph or 5000 rpm

05 Jul 2012 00:03
#533923
Any tears,or holes are signs of air/fuel delivery problems.
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  • tinlizzie37
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Re: 1987 kawasaki 454 won't go over 55 mph or 5000 rpm

05 Jul 2012 15:32
#534045
The EN 450 has to have the filter rubbers hooked up or it runs too lean. The advance is electronic on these bikes. Do check for air leaks and hook up carbs with stock air filters. Sounds like your too lean. Bob
Bob KZ 650 E1, En 450

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  • baldy110
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Re: 1987 kawasaki 454 won't go over 55 mph or 5000 rpm

05 Jul 2012 17:13
#534067
Did it go faster than 55 prior to the carb cleaning?

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  • lifesvr1018
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Re: 1987 kawasaki 454 won't go over 55 mph or 5000 rpm

06 Jul 2012 23:07
#534367
Yes, the bike went well over 70. The mechanic cleaned the carbs and installed a new petcock I had ordered. Now will not go over 5000 rpm.

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