95 V750 spewing oil - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 15 (permalink) Old 06-28-2013, 07:36 PM Thread Starter
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Angry 95 V750 spewing oil

I just bought a 1995 Vulcan750 from a guy in New York, trailer'd it back to Jersey, put fresh gas and a battery, and it started right up. Rode it around the block a couple of times, ran strong and smooth, but then as I opened it up coming towards home, oil started spewing from the left air filter box. Does anyone know what it could be thats causing that? Thanks
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post #2 of 15 (permalink) Old 06-28-2013, 08:38 PM
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...check the crankcase breather, or oil level too high, or obstucted oil line....

....if the oil level is too high, drain some, add some SeaFoam to the oil....run it a little, not hard....drain and change oil and filter....see if that helps....



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post #3 of 15 (permalink) Old 06-28-2013, 08:50 PM Thread Starter
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I assumed there may be too much oil, put it on the center stand waited, 10 minutes for it to settle, then drained some til it was a little below the top of the glass. The breather hoses are un-obstructed, and connected to the air box. Still spews oil out of the breather hose coming from the front of the cylinder. thanks for the advice, Ive been looking through pages upon pages to see if anyone else had the same problem.[/FONT]
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post #4 of 15 (permalink) Old 06-28-2013, 09:50 PM
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But if there is a blockage in the external oil lines (not the breathers), that would cause high crankcase pressure and spew out....try what I said with the SeaFoam and oil/filter change....and check all the lines for kinks and pinches....
Take 2 shots of whatever and call me in the morning....



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post #5 of 15 (permalink) Old 06-28-2013, 11:49 PM
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Could be an excess of blowby from worn or broken rings, broken piston, etc.. Are you sure the power is up to par? If not, you could check compression on that cylinder.

Or, do a *cylinder short test to see if that cylinder is actually firing. That much oil in the air filter and no smoke at the pipe?

Normally I would say... Lift the oil cap at idle and fast idle to check blowby there. But, I don't know if it's normal for the VN to spew pressure there when running or not, some engines do, I've not done it on the VN. The rotor could sling some oil (do not try to touch the spinning rotor), which would be normal, but a fair amount of oil/smoke/air that increases with rpm would indicate excess blowby on most engines.

cylinder short test: remove plug wire on the cylinder, rpm should drop...replace wire, rpm should rise. You do this one cyl at a time on, say, a V8, V6 etc. while it's idling.

I've never run a VN on one cylinder either.

But in our case we'd have to pull two wires, better insulate the fingers.
*
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2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf

Last edited by Spockster; 06-28-2013 at 11:52 PM.
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post #6 of 15 (permalink) Old 06-29-2013, 12:57 PM Thread Starter
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Keeps getting worse. It did it again after I drained some oil out. was looking at posts on here and noticed one about gas getting into the oil. checked the little oil i dumped yesterday and it has gas in it(lit a match and held it above the surface it lit up) and I drained the rest of the oil and its just black gas. Changed filter, new oil, Checked oil lines, fresh gas and it did it again. spent $2000 on this bike bc it was so nice and itvstarted right up at the guys house. title has under 3kmiles and bike has 4719k even looks brand spankin new he kept it garaged, so i dnt understand why its a piece of **** if it was babied haha!
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post #7 of 15 (permalink) Old 06-29-2013, 01:07 PM
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Quote:
Originally Posted by Con_Safos_Ed View Post
Keeps getting worse. It did it again after I drained some oil out. was looking at posts on here and noticed one about gas getting into the oil. checked the little oil i dumped yesterday and it has gas in it(lit a match and held it above the surface it lit up) and I drained the rest of the oil and its just black gas. Changed filter, new oil, Checked oil lines, fresh gas and it did it again. spent $2000 on this bike bc it was so nice and itvstarted right up at the guys house. title has under 3kmiles and bike has 4719k even looks brand spankin new he kept it garaged, so i dnt understand why its a piece of **** if it was babied haha!
You probably have a sticky float in the carburetor letting gas just drip into the cylinder head, seeping down into the oil.

It just sounds like it may have sat a while, and needs some attention given to the carbs.

Happy to hear anyone elses ideas.

1986 Kawasaki Vulcan 750
NGK Iridium Plugs #7803/DPR7EIX-9
Duralast Gold ETX15 AGM Battery
Coastered & Shaved
TOC MCCTs
Metzeler ME880 [110/90-19, 170/80-15]
Balance Dampers Replaced
Tuxedo Mod
Rebuilt Forks w/ Progressive Springs
V&H Cruzers
VN750.com Grill Cover
Meanstreak Seat
Emgo 23-92411 Handlebars
MOSFET FH012AA R/R


1990 Kawasaki Vulcan 750

1998 Honda VFR800 FI

2014 Honda VFR800F

1989 Pontiac Firebird Formula 350
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post #8 of 15 (permalink) Old 06-29-2013, 01:18 PM
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Quote:
Originally Posted by thtanner View Post
You probably have a sticky float in the carburetor letting gas just drip into the cylinder head, seeping down into the oil.

It just sounds like it may have sat a while, and needs some attention given to the carbs.

Happy to hear anyone elses ideas.
x2 ....I agree, that's the first/most likely culprit, ThTanner has it nailed.

Floats can/do stick on a 750, especially if not a daily rider.


'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
Additional Flashing LED Brake Light on Trunk
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 #9 of 15 (permalink) Old 06-29-2013, 02:34 PM
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Or a clogged air bleed, which sets up a siphon action out of the bowl.

2003-21k mi
Shaved w/UniPK92+Stock Jets-TPE/MOSFET-Shinko Tires-AGM batt-bags-chrome-LEDs...more
__________________________________________________ ____________
Repair Manual: http://www.mediafire.com/file/mj7z81..._Catalogue.pdf

Owner's Manual: http://www.mediafire.com/file/nscb5f...ers+Manual.pdf
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post #10 of 15 (permalink) Old 06-29-2013, 06:40 PM
..have a vulcan good day!
 
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Quote:
Originally Posted by Spockster View Post
Or a clogged air bleed, which sets up a siphon action out of the bowl.
True (as I know it).


'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
Additional Flashing LED Brake Light on Trunk
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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