Gas shooting out of vacuum line - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 18 (permalink) Old 03-13-2010, 09:27 PM Thread Starter
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Gas shooting out of vacuum line

I got gas shooting out of the vacuum line that connects to the two carbs, I did the ear shave so that line is just open at the T now, I have gas shooting out of the open end of that T. I am pretty sure it is a stuck float, but just wanted to make sure, I got the carbs cleaned at carbworx so they should be good to go, I finally got them on the bike this weekend. I tried shooting carb cleaner up the drain valve on the left side, I could not get the screw out on the right side due to the cable holder to shoot the cleaner up it. Next thing is to buy some seafoam and try that, any other ideas?

btw, I am not blaming carbworx for this, steve tested the floats and they were fine, its probably something I have done.

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1996 Suzuki Bandit 600 - Current ride

Last edited by Mellow; 03-13-2010 at 09:31 PM.
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post #2 of 18 (permalink) Old 03-13-2010, 10:17 PM
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Quote:
Originally Posted by Mellow View Post
I got gas shooting out of the vacuum line that connects to the two carbs, I did the ear shave so that line is just open at the T now, I have gas shooting out of the open end of that T. I am pretty sure it is a stuck float, but just wanted to make sure, I got the carbs cleaned at carbworx so they should be good to go, I finally got them on the bike this weekend. I tried shooting carb cleaner up the drain valve on the left side, I could not get the screw out on the right side due to the cable holder to shoot the cleaner up it. Next thing is to buy some seafoam and try that, any other ideas?

btw, I am not blaming carbworx for this, steve tested the floats and they were fine, its probably something I have done.
Stuck float or a peice of debris keeping the float valve from closing.


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
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SYNTHETIC BRAKE FLUID
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post #3 of 18 (permalink) Old 03-14-2010, 09:46 PM
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Originally Posted by lance328 View Post
Stuck float or a peice of debris keeping the float valve from closing.
Ditto. Since you did the ear shave, though, should be easy enough to pull the carbs and open the float bowls to have a looksee.

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post #4 of 18 (permalink) Old 03-15-2010, 02:45 PM Thread Starter
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I was under the impression that if I open the float bowl I will have to make adjustments to the float again, is that true? If I can just open it and spray it with carb cleaner that would be great. Currently I have sucked pure seafoam into the carbs and letting them sit for a day in hopes that will clean out the junk.

I guess I had some left over crap sitting in the tank, just when you think you have done enough to clean it out this happens.

1993 Vulcan 750 - SOLD
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post #5 of 18 (permalink) Old 03-15-2010, 02:49 PM Thread Starter
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Thanks goes out to Steve at Carbworx, as soon as he saw my post about me having problems he gave me a call and offered to fix my carbs for free, now that is service! I have them soaking in pure seafoam at the moment, hoping that will clean out the boogers in the float bowl.

1993 Vulcan 750 - SOLD
---------------------------
1996 Suzuki Bandit 600 - Current ride

Last edited by Mellow; 03-16-2010 at 08:13 PM.
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post #6 of 18 (permalink) Old 03-18-2010, 09:12 AM Thread Starter
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So I filled up the left carb with seafoam Tuesday night, came back last night to drain the bowl and it was dry. I tested the right carb and it drained as it should. Where could there be a leak that would empty the bowl? I cleaned up the carb last night and wiped it all down and filled it up with seafoam again through the gas line till it came out the middle port by the air filter, I did not see it dripping anywhere.

Wondering if I have a slow leak in the gasket for the float bowl?

1993 Vulcan 750 - SOLD
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post #7 of 18 (permalink) Old 03-18-2010, 09:39 AM
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Could the float valve be leaking it into the cylinder?

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post #8 of 18 (permalink) Old 03-18-2010, 09:44 AM
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X2!! Float valve


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 #9 of 18 (permalink) Old 03-18-2010, 09:59 AM
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Quote:
Originally Posted by lance328 View Post
X2!! Float valve
X3 and if you have to take the carb off be sure to check the seat for a scratch or even something as small as a human hair .I ran into this once when working for a dealership.Another shop had "cleaned " the carbs and one cylinder flooded all the time and it was the float valve seat that had a small scratch on the seating surface I found it bench testing after new float valves had been installed and it still poured gas through the Carb and it looked like some one had gotten a little rough trying to clean the seats and damaged it and it was hard to see ,so look closely.




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post #10 of 18 (permalink) Old 03-18-2010, 11:36 AM Thread Starter
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Thanks guys, that explains why my oil smells like gas. Before I send it back to carbworx is there anything easy I can do to try and fix it? You think the carb cleaner up the drain hole would free up whatever is in there?

1993 Vulcan 750 - SOLD
---------------------------
1996 Suzuki Bandit 600 - Current ride
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