Doesnt want to rev about 4-5k - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 10 (permalink) Old 11-02-2011, 02:21 PM Thread Starter
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Doesnt want to rev above 4-5k

Still workin on the 94 vulcan i got, it runs good, except it feels like i hit redline at only like 4-5k (ie, doesnt want to rev higher). If i keep cranking and push through it it will get higher, but it feels like the engine is fighting it.

Any ideas?

Last edited by ironcowboy; 11-02-2011 at 02:53 PM.
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post #2 of 10 (permalink) Old 11-02-2011, 04:34 PM
..have a vulcan good day!
 
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I experienced similar when the rear (#2) coil quit functioning...

'86 VN750 13,700 mi -Stock
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...have a vulcan good day!
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post #3 of 10 (permalink) Old 11-02-2011, 09:56 PM Thread Starter
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Ok, i'm about to change all my plugs and wires, so i'll check the coils too. Do i need a volt meter?
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post #4 of 10 (permalink) Old 11-02-2011, 10:16 PM
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I had similar issues when I tried taking a ride without the air filters in the ears. Ran fine until I hit about the 4k rpm mark.
Have you check the condition of the filters?


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post #5 of 10 (permalink) Old 11-03-2011, 10:04 AM
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You want to check the vent hose that feeds into the back of the right airbox to make sure it isn't bottomed out. (cut the end at a 45 degree angle and reinsert)

And you want to examine the diaphragms in the carbs for holes or tears.

You should also chech the throttle cable to make sure it is opening all the way when you twist the grip.

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post #6 of 10 (permalink) Old 11-03-2011, 03:40 PM Thread Starter
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Quote:
Originally Posted by hyperbuzzin View Post
I had similar issues when I tried taking a ride without the air filters in the ears. Ran fine until I hit about the 4k rpm mark.
Have you check the condition of the filters?
Very interesting,
My filters are shot, i have new ones on order right now, lets hope thats the problem.
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post #7 of 10 (permalink) Old 11-03-2011, 04:25 PM
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Quote:
Originally Posted by Knifemaker View Post
You want to check the vent hose that feeds into the back of the right airbox to make sure it isn't bottomed out. (cut the end at a 45 degree angle and reinsert)And you want to examine the diaphragms in the carbs for holes or tears.

You should also chech the throttle cable to make sure it is opening all the way when you twist the grip.
I think that should be #1, then the filters themselves #2, and if no help go to the harder and more expensive stuff...lol...
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post #8 of 10 (permalink) Old 11-03-2011, 05:31 PM Thread Starter
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Thanks guys, i have the bike at a buddys house, so i'll look into all that next time i can get over there.
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post #9 of 10 (permalink) Old 11-15-2011, 07:38 PM Thread Starter
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It was the air filters, new filters all oiled up and she's runnin good.
Got it all inspected and i can ride it all legal now.
What kind of MPG can i expect from back road riding?
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post #10 of 10 (permalink) Old 11-16-2011, 01:38 AM
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I'm getting around 48-50 mpg, if I'm really having fun I'll only get about 40-42 on average.

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