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Carbs and Fuel System
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Thread: Front cilinder filling up with fuel Reply to Thread
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  Topic Review (Newest First)
03-10-2017 07:38 AM
Gaz73 ffs Doc lol lol lol lol
03-09-2017 06:09 PM
OleDirtyDoc that's why my pants are thin,I think. a manual feel pet cock. and yes,I have lots of peace of mind[emoji12]

Sent from my LGL34C using Tapatalk
03-09-2017 04:53 PM
gidaeon Another cheap "peace of mind" solution is picking up manual fuel petcock of ebay for like $10 for our bike. No vacuum operation, or worry about 'is my carb float holding it back'. You usually just have to plumb in a T connection for the two carbs. Turn it off when the bike isn't running.

Can be cheaper and easier than fixing the oem vacuum operated petcock in some cases.
03-09-2017 03:23 PM
OleDirtyDoc
Quote:
Originally Posted by Spockster View Post
Mine looked like a worn out pair of jeans, faded and see through in one spot. All that repeated flexing I suppose.
my jeans always do that in the front and I don't know why

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03-09-2017 02:21 PM
Spockster
Quote:
Originally Posted by Gaz73 View Post
Just done mine today as part of the bikes overhaul, everything was worn out.... the previous owner must of been in there too as the little diaphragm spring was missing too of course that spring doesn't come in the petcock rebuild kit, thankfully it's only 1.58 from Kawasaki though

Little wonder the petrol/gas just constantly flowed on my bike regardless of petcock lever was positioned
Mine looked like a worn out pair of jeans, faded and see through in one spot. All that repeated flexing I suppose.
03-09-2017 01:58 PM
Gaz73
Quote:
Originally Posted by Spockster View Post
In addition, check to see if the vacuum line to the petcock is wet with gas, it should be dry.

The petcock diaphragm wears out and leaks gas through the vacuum line, into the carb throat, which is angled to the front cylinder, so the gas just runs in.

You're going to need an oil change, because your oil has gas in it. Might even be overfull, I would bet on it. You may have noticed your shifter being a little sticky once it gets hot?

Had to rebuild the petcock on mine last Fall, with all the above.
Just done mine today as part of the bikes overhaul, everything was worn out.... the previous owner must of been in there too as the little diaphragm spring was missing too of course that spring doesn't come in the petcock rebuild kit, thankfully it's only 1.58 from Kawasaki though

Little wonder the petrol/gas just constantly flowed on my bike regardless of petcock lever was positioned
03-09-2017 12:30 PM
Bas Assink Thx! i'll try checken the floats this weekend. Keep you posted.
03-09-2017 08:41 AM
OleDirtyDoc
Quote:
Originally Posted by Spockster View Post
In addition, check to see if the vacuum line to the petcock is wet with gas, it should be dry.

The petcock diaphragm wears out and leaks gas through the vacuum line, into the carb throat, which is angled to the front cylinder, so the gas just runs in.

You're going to need an oil change, because your oil has gas in it. Might even be overfull, I would bet on it. You may have noticed your shifter being a little sticky once it gets hot?

Had to rebuild the petcock on mine last Fall, with all the above.
forgot about the diaphragm

Sent from my LGL34C using Tapatalk
03-09-2017 02:06 AM
Spockster In addition, check to see if the vacuum line to the petcock is wet with gas, it should be dry.

The petcock diaphragm wears out and leaks gas through the vacuum line, into the carb throat, which is angled to the front cylinder, so the gas just runs in.

You're going to need an oil change, because your oil has gas in it. Might even be overfull, I would bet on it. You may have noticed your shifter being a little sticky once it gets hot?

Had to rebuild the petcock on mine last Fall, with all the above.
03-08-2017 06:21 PM
OleDirtyDoc the front float is sticking,or dirty float needle, or out of adjustment float bowl.here's a quick way,if it's not too dirty,to clean up the needle, thank the late Wolfie,RIP brother https://www.vn750.com/forum/showthread.php?t=25458

Sent from my LGL34C using Tapatalk
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