Basic question - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Electrical
Where does this wire go?
Includes Electrical mods, Lights, Stator,
Rectifier, Diagrams, etc

 
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post #1 of 8 (permalink) Old 08-15-2011, 10:21 AM Thread Starter
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Basic question

Just because I like getting all my ducks in a row before poking at things.

In the DC area it has rained about 3-4 inches in the past two days. In between storms to avoid parking tickets ("street cleaning" in this town) I fired up the bike to move it. As I backed off the choke it changed tune as if I had the petcock on "off". It stayed at the right rpms but had a sluggish throttle response. Drove it 3 blocks and it was acting like I was shifting at too low an rpm and it was making an odd almost backfire noise occasionally as if it was under water. I left it on when I parked and the front cylinder exhaust wasn't hot and I could faintly smell some gas.

This makes me think I either have a stuck float or no spark. Since I haven't messed with these things yet I just had some dopey questions:

To check for spark, all I would need to do is remove a plug, ground it against the engine case and hit the start button right? Preferably not zapping myself.

For a float, I should drain the front carb bowl via screw, find the line from the petcock that goes to the front carb and put some seafoam in there over night, drain, and give it a go. How much seafoam would folks recommend/which hose?

I am leaning towards spark since it rained a lot and the wires prob haven't been changed ever (1994/29k miles).

Thanks for the help!
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post #2 of 8 (permalink) Old 08-15-2011, 10:40 AM
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wait until everything is 100% dry.

1995 VN750 (SOLD)
05-06 CBR600 R/R
ACCT>MCCT mod
engine guard w/HW pegs
Tires, 230's (170/110)
Smaller blinkers
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Pickup coil mod
Speedo delete
mirrors w/reverse mount
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post #3 of 8 (permalink) Old 08-15-2011, 10:47 AM Thread Starter
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That is a very good point. If the problem fixes itself I couldn't ask for better.

Should be dry tonight or the very latest tomorrow.
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post #4 of 8 (permalink) Old 08-15-2011, 11:00 AM
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Quote:
Originally Posted by Papa Smurf View Post
That is a very good point. If the problem fixes itself I couldn't ask for better.

Should be dry tonight or the very latest tomorrow.
Well almost If you think everything is dry and it's still not running right you might need to ride her or at lest keep it running to dry out any unseen moisture..

1995 VN750 (SOLD)
05-06 CBR600 R/R
ACCT>MCCT mod
engine guard w/HW pegs
Tires, 230's (170/110)
Smaller blinkers
Driving lights
Pickup coil mod
Speedo delete
mirrors w/reverse mount
Black grips

2000 Buell X1 Lightning
Carbon fiber fender F&R
Carbon fiber fly screen
Carbon fiber race intake
Works Shock
V&H Muffler
SS headers

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post #5 of 8 (permalink) Old 08-15-2011, 11:42 AM
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1988 VN750[SIGPIC][/SIGPIC]

Last edited by FlacoLove; 03-25-2013 at 08:47 AM.
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post #6 of 8 (permalink) Old 08-15-2011, 01:43 PM
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Quote:
Originally Posted by Papa Smurf View Post
Just because I like getting all my ducks in a row before poking at things.

In the DC area it has rained about 3-4 inches in the past two days. In between storms to avoid parking tickets ("street cleaning" in this town) I fired up the bike to move it. As I backed off the choke it changed tune as if I had the petcock on "off". It stayed at the right rpms but had a sluggish throttle response. Drove it 3 blocks and it was acting like I was shifting at too low an rpm and it was making an odd almost backfire noise occasionally as if it was under water. I left it on when I parked and the front cylinder exhaust wasn't hot and I could faintly smell some gas.

This makes me think I either have a stuck float or no spark. Since I haven't messed with these things yet I just had some dopey questions:

To check for spark, all I would need to do is remove a plug, ground it against the engine case and hit the start button right? Preferably not zapping myself.

For a float, I should drain the front carb bowl via screw, find the line from the petcock that goes to the front carb and put some seafoam in there over night, drain, and give it a go. How much seafoam would folks recommend/which hose?

I am leaning towards spark since it rained a lot and the wires prob haven't been changed ever (1994/29k miles).

Thanks for the help!
Coul;d be moisture in the fuel tank or moisture in the air filters. If you still have the ears, pull out the foam filters and dry them out. A can of dry gas in the tank might help.

JM2001

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2001 Vulcan 750
marbled
TOC upgrade on ACCT
Air/fuel mixture set to 2 1/2 out
rectifier relocated
splines lubed
iridiums
decals removed
upgraded mirrors
Pic up coil mod done
degoated
All LED lighting
Upgraded Mosfet rectifier
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post #7 of 8 (permalink) Old 08-15-2011, 03:30 PM
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If you bike has to stay outside might be worth it to get yourself a cover.
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post #8 of 8 (permalink) Old 08-17-2011, 06:01 PM Thread Starter
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Think I figured it out.

I started it up today since it was bone dry and it idled/reved great. I started looking at my plug wires and they looked fine. Was about to fuss with them when I looked up a touch on the left side of the bike. Turns out my carb boot was only seated about halfway on! I'm going to replace the screw since it is stripped but I am assuming this is the culprit (and probably why I have been popping a tad more on decel). If you guys feel differently- steer me in the right direction.

I used to own a cover. One of those "It's not just a bike" ones that are silver at the top. Was pretty worthless. Let in plenty of rainwater and not just condensation. I have been lazy getting a better one.

Thanks!
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