Need help diagnosis:power loss/tach inop/restart solves issue??? - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 6 (permalink) Old 01-19-2009, 10:20 PM Thread Starter
wicker san antonio
 
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Need help diagnosis:power loss/tach inop/restart solves issue???

Twice now I have lost power like loss of fuel. Pulled over switched to aux.tank to no avail. In neutral will rev up fine but engage clutch and lugs down....then I noticed the tach was inop. Turned the bike off and restared, tach came back and full power returned. This has happend twice in the last 300 miles. Bike is 2002 and has almost 11000 miles. I have put the last 6000 on it since May 08.......Anyone had this experience?
Thanks. WWicker/ San Antonio
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post #2 of 6 (permalink) Old 01-19-2009, 11:02 PM
 
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start at the battery... make sure all the conections are tight... that used to happen in my car...
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post #3 of 6 (permalink) Old 01-19-2009, 11:58 PM
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Quote:
Originally Posted by wwicker View Post
Twice now I have lost power like loss of fuel. Pulled over switched to aux.tank to no avail. In neutral will rev up fine but engage clutch and lugs down....then I noticed the tach was inop. Turned the bike off and restared, tach came back and full power returned. This has happend twice in the last 300 miles. Bike is 2002 and has almost 11000 miles. I have put the last 6000 on it since May 08.......Anyone had this experience?
Thanks. WWicker/ San Antonio
Along with checking the battery connections check the frame ground connection and the engine ground connection. The tach. gets it's signal from the front coil, check the coil wires and the wires around the frame neck. You could also have a pickup coil problem?


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post #4 of 6 (permalink) Old 01-20-2009, 10:27 AM
 
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^^^^ X2... wasnt thinking straight.... grounds too..
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post #5 of 6 (permalink) Old 01-22-2009, 09:28 AM
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One more thing: It may be the "phantom out of gas syndrome." This is usually caused by a blocked vent in the fuel tank cap. Try opening then closing the fuel tank cap (can't do while riding unless you have a spare key already in the cap). It's happened to me a few times in the past. Try doing a forum search on phantom out of gas syndrome to get more info.

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post #6 of 6 (permalink) Old 01-27-2009, 05:41 PM Thread Starter
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Thanks for all the tips. Will check all elec. connections. Also did not think of the gas cap vacuum problem until you mentioned it...will try that next time however I think it is probably an electrical problem since the tach stops working when the problem occurs.
W.Wicker/San Antonio
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