front cylinder won't fire when cold - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 6 (permalink) Old 02-24-2009, 05:06 PM Thread Starter
 
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front cylinder won't fire when cold

After removing the goats belly, I can hear the cylinders fire and when the engine is cold the front cylinder will not fire until the engine warms up
some. Then you can here it start to fire until it is firing normal.
What could be causing this? never heard it before. When I changed oil it was normal not thin. The engine runs like a champ when it warms up. I don't think it has been doing this before I removed the goats belly but I could be wrong.
Maybe I just could not hear it before. Help please.
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post #2 of 6 (permalink) Old 02-24-2009, 05:34 PM
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HERE'S another thread on the same issue, maybe it'll help.
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post #3 of 6 (permalink) Old 02-24-2009, 06:49 PM
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Does your tach. work? If the front cylinder is not firing the tach. will not work.


85 VN700 "Old Yella"

REBUILT ENGINE
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EAR SHAVED AND RE-JETTED W/K&N'S
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post #4 of 6 (permalink) Old 02-25-2009, 09:40 PM Thread Starter
 
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The tack works so I will try again in the morrning. Then I will try to replace the coils.
A local motorcycle mechanic said it sounds like a weak coil.
Thanks for the feedbacks.
post #5 of 6 (permalink) Old 02-25-2009, 10:15 PM
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Quote:
Originally Posted by [email protected] View Post
The tack works so I will try again in the morrning. Then I will try to replace the coils.
A local motorcycle mechanic said it sounds like a weak coil.
Thanks for the feedbacks.
Before you replace the coils turn key on and check the voltage at the red coil wire.


85 VN700 "Old Yella"

REBUILT ENGINE
CUSTOM PAINT
VANCE & HINES CRUZERS
EAR SHAVED AND RE-JETTED W/K&N'S
DUNLOP ELITE K591 FRONT & REAR
VOLTMETER
SYNTHETIC BRAKE FLUID
SYNTHETIC OIL & GEAR LUBE
PLEXISTAR 2 WINDSHIELD
SPLINES LUBED
ACCT'S GREASED W/TOC SPRINGS
COASTERD
LEATHER SADDLE BAGS
LEATHER TOOL AND ROLL BAG
PICKUP COILS GAPPED AT .018"
NGK CAP, WIRES, IRIDUMS
BARNETT FRICTION PLATES & SPRINGS
CUSTOM GRIPS, MIRRORS, LEVERS
ORIGINAL STATOR & R/R 14.5v
DEKA MF AGM ETX15L

Best Auto/Moto Insurance | Motorcycle Protection Today | FREE Trade-In Quote
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post #6 of 6 (permalink) Old 02-26-2009, 12:09 AM
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Quote:
Originally Posted by lance328 View Post
Before you replace the coils turn key on and check the voltage at the red coil wire.
I just want to add that you'll want to check your battery voltage with key off to give you a benchmark for the voltage at the coil. Then measure the coil red wire voltage with the key in the on position but with engine not running. The two voltages should be very close. If the coil wire voltage is quite a bit less, then you are losing some voltage through the wiring.

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