Oil level high - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 6 (permalink) Old 06-27-2013, 07:49 PM Thread Starter
'03 VN750 "Rosie"
 
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Oil level high

I did an oil change about a month ago and filled it to the upper third of the sight glass. After riding the next day it was reading a little lower so I added a little so just a thin bubble was showing at the top of the sight glass,but from then on its been too high to read.

Question: how can I tell if there is gasoline in the oil? I open the oil cap with the engine cold and don't smell any fuel. Is gasoline lighter or heavier than oil? I don't smell gas when changing the oil and don't see anything unusual in the dirty oil. I always turn off the petcock when I park it.

It's probably nothing but if anyone has advice I would appreciate it.

'03 VN750 "Rosie"
Purchased in June 15, 2010
Windshield
Lubed Splines
Lubed and Adjusted Clutch Cable, Throttle Cables.
Relocated Voltage Regulator
Brakes Bled
Luggage Rack
Lazy Rider Bag
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Legitimate Title!! (finally!) Aug 30, 2010
New AGM Interstate Battery Sept 15, 2012

2008 Hyosung GV250 (sold!)
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post #2 of 6 (permalink) Old 06-27-2013, 08:15 PM
..have a vulcan good day!
 
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Quote:
Originally Posted by bstew7890 View Post
I did an oil change about a month ago and filled it to the upper third of the sight glass. After riding the next day it was reading a little lower so I added a little so just a thin bubble was showing at the top of the sight glass,but from then on its been too high to read.

Question: how can I tell if there is gasoline in the oil? I open the oil cap with the engine cold and don't smell any fuel. Is gasoline lighter or heavier than oil? I don't smell gas when changing the oil and don't see anything unusual in the dirty oil. I always turn off the petcock when I park it.

It's probably nothing but if anyone has advice I would appreciate it.
The manual states (something like) "Place bike on Center Stand, run/warm up the engine a few minutes, shut off, let sit 10 minutes, check oil."

If performed the same method each/every time, you will not (should not) find a difference in Oil levels.
A cold engine will show a higher Oil level than a warm/hot engine.....
hope this helps

'86 VN750 13,700 mi -Stock
-Purchased 2008 w/8800mi
Replaced ALL Cables . Kuryakyn LED Voltmeter
SilverStar Ultra 9003/HB2 H4 Headlamp, Jardine Fwd Controls,
Iridiums DPR7EIX-9 & Wires, Tuxedo Mod, Coil Mod, P/U Sensor Mod, Fork Seals,
Splines Lubed - 11/4/2012 - MF AGM Battery
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Dampers went out @ 13+K !
After TOC MCCT's..... so amazingly quiet I discovered a rattling heat shield on my stock exhaust !
...have a vulcan good day!
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post #3 of 6 (permalink) Old 06-27-2013, 08:31 PM
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Solution to the 1st question: Turn the cockpit to the off position when the bike is not in use. This bikes fuel system is gravity feed, not pumped so gasoline is always trying to go to the carburetors. When we lean the bike over to the kick stand the floats are now not the upright position, which it is 95% of the riding time. May be on the stand when on a hill giving it another whole new angle. Best prevention of keeping fuel out of the oil is simply turn the fuel off when not in use. I know you said you do this. That is great. Typed this cause you'd be surprised how many people get gas in the oil and still don't turn off the cockpit.

Now then: What WilliamTech said.

Last edited by Chuck A.; 06-27-2013 at 08:33 PM.
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post #4 of 6 (permalink) Old 06-27-2013, 11:25 PM Thread Starter
'03 VN750 "Rosie"
 
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Quote:
Originally Posted by WilliamTech View Post
The manual states (something like) "Place bike on Center Stand, run/warm up the engine a few minutes, shut off, let sit 10 minutes, check oil."

If performed the same method each/every time, you will not (should not) find a difference in Oil levels.
There's a manual???....

Thanks for the replies, guys. I think I went overboard in topping off the crankcase.

'03 VN750 "Rosie"
Purchased in June 15, 2010
Windshield
Lubed Splines
Lubed and Adjusted Clutch Cable, Throttle Cables.
Relocated Voltage Regulator
Brakes Bled
Luggage Rack
Lazy Rider Bag
Leather Saddle Bags
Legitimate Title!! (finally!) Aug 30, 2010
New AGM Interstate Battery Sept 15, 2012

2008 Hyosung GV250 (sold!)

Last edited by bstew7890; 06-27-2013 at 11:49 PM.
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post #5 of 6 (permalink) Old 06-27-2013, 11:57 PM
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what kind of oil did you use? i ask because jugs are diff sizes. ive found that if you take out 12oz out of a 1 gallon jug then put the rest in the bike its perfect.

http://map.vulcan750.net/

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1994 VN750

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post #6 of 6 (permalink) Old 06-28-2013, 09:23 PM
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To check for oil in the gas (they mix well btw, since theyre really the same thing at different levels if refinement), I take a piece of old fuel line, stick it into the fill hole to the bottom, cover the top of the hose, then dump whats in the tube into a clean tuna can....AFTER running the bike, btw....take a wiooden match and hold it just above, almost touching, the oil...if it lights, even for a second, you got gas....dont let the match touch though...



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