Vapor Lock ? - Honda Foreman Forums : Rubicon, Rincon, Rancher and Recon Forum

Hondo · 06-04-2010, 09:13 PM

I'm new to this forum but not new to Honda Fourtrax's. I got a 95 400 that when the weather is neither hot or cold like late spring or early fall it dies. Now if you blow in the hose it will start right back up and may run for an hour may run 10 minutes.
We have 3 400's and a 500 and mine is the only one that does it and I can swap fuel caps and vent hoses with any of the others even drilled through a fuel cap and it still happens.
Any ideas ?

Mjerry · 09-07-2010, 01:49 PM

Hello,

I would love to know if you found a solution to your problem as I am having the exact same issue.

Thanks
Mike

foreman480 · 09-07-2010, 01:54 PM

change your plug bubba

Mjerry · 09-07-2010, 03:08 PM

Yup tried that already. Bad out of the box?? Any other tips/tricks?
I just don't get why/what blowing in the hose really does?

Thanks

foreman480 · 09-07-2010, 03:25 PM

your talking about the vent on the gas cap right?

Mjerry · 09-07-2010, 03:46 PM

Nope there is a 1/4 hose (vent?)off the upper portion of the carb.
Sorry should have been more specific
Thanks

foreman480 · 09-07-2010, 04:04 PM

id probably try cleaning the carb its pretty simple you need fuel air and fire to run you have fire and air the only thing left is fuel my try pouring some sea foam in the gas if that doesnt work take the carb apart and soak it in parts cleaner or diesel or whatever you can if you do diesel be sure to get it off and out of the carb with some carb cleaner

FloatingForeman · 09-07-2010, 08:09 PM

to the fourms sounds like you need to clean your carb

Hondo · 09-07-2010, 09:01 PM

I tried the new plug also but I'm blowing in the vent hose on the cap. Traded out caps with another bike, cleaned out the shutoff valve, blowed out all the hoses to the carb and even stuck a brand new Honda carb on it and it still does it. If I blow in the hose and kink it to hold the pressure it will run along time. Actually mine has since it was a year old.
When I first posted this I was hoping someone had had the problem and knew of a fix.

FloatingForeman · 09-07-2010, 09:13 PM

maybe youve got a stopped up fuel line filter and when you blowing air in the cap its forcing
the gas through then it runs out again?

06-04-2010, 09:13 PM	#1 (permalink)
Hondo Honda Rider Join Date: Jun 2010 Posts: 76	Vapor Lock ? I'm new to this forum but not new to Honda Fourtrax's. I got a 95 400 that when the weather is neither hot or cold like late spring or early fall it dies. Now if you blow in the hose it will start right back up and may run for an hour may run 10 minutes. We have 3 400's and a 500 and mine is the only one that does it and I can swap fuel caps and vent hoses with any of the others even drilled through a fuel cap and it still happens. Any ideas ?

09-07-2010, 01:49 PM	#2 (permalink)
Mjerry Honda Rider Join Date: Sep 2010 Posts: 4	Same issue Hello, I would love to know if you found a solution to your problem as I am having the exact same issue. Thanks Mike

09-07-2010, 01:54 PM	#3 (permalink)
foreman480 Honda Rider Join Date: Aug 2010 Location: Williamson Posts: 71	change your plug bubba __________________ '95 foreman 480---SOLD! looking for the next one might have to go to the dark side (non honda)

09-07-2010, 03:25 PM	#5 (permalink)
foreman480 Honda Rider Join Date: Aug 2010 Location: Williamson Posts: 71	your talking about the vent on the gas cap right? __________________ '95 foreman 480---SOLD! looking for the next one might have to go to the dark side (non honda)

09-07-2010, 04:04 PM	#7 (permalink)
foreman480 Honda Rider Join Date: Aug 2010 Location: Williamson Posts: 71	id probably try cleaning the carb its pretty simple you need fuel air and fire to run you have fire and air the only thing left is fuel my try pouring some sea foam in the gas if that doesnt work take the carb apart and soak it in parts cleaner or diesel or whatever you can if you do diesel be sure to get it off and out of the carb with some carb cleaner __________________ '95 foreman 480---SOLD! looking for the next one might have to go to the dark side (non honda)

09-07-2010, 03:08 PM	#4 (permalink)
Mjerry Honda Rider Join Date: Sep 2010 Posts: 4	Yup tried that already. Bad out of the box?? Any other tips/tricks? I just don't get why/what blowing in the hose really does? Thanks

09-07-2010, 03:46 PM	#6 (permalink)
Mjerry Honda Rider Join Date: Sep 2010 Posts: 4	Nope there is a 1/4 hose (vent?)off the upper portion of the carb. Sorry should have been more specific Thanks

09-07-2010, 08:09 PM	#8 (permalink)
FloatingForeman Honda Lover Join Date: Jun 2010 Location: FLORENCE AL Posts: 365	to the fourms sounds like you need to clean your carb __________________ -Honda Rancher 350- -Wiseco Piston- -Kenda Executioners- -Super ATV Disc Brake Kit- -Uni Fliter- -DPK Clutch Kit- -Custom Snorkel- -Jets-R-Us Jet Kit-

09-07-2010, 09:01 PM	#9 (permalink)
Hondo Honda Rider Join Date: Jun 2010 Posts: 76	I tried the new plug also but I'm blowing in the vent hose on the cap. Traded out caps with another bike, cleaned out the shutoff valve, blowed out all the hoses to the carb and even stuck a brand new Honda carb on it and it still does it. If I blow in the hose and kink it to hold the pressure it will run along time. Actually mine has since it was a year old. When I first posted this I was hoping someone had had the problem and knew of a fix.

09-07-2010, 09:13 PM	#10 (permalink)
FloatingForeman Honda Lover Join Date: Jun 2010 Location: FLORENCE AL Posts: 365	maybe youve got a stopped up fuel line filter and when you blowing air in the cap its forcing the gas through then it runs out again? __________________ -Honda Rancher 350- -Wiseco Piston- -Kenda Executioners- -Super ATV Disc Brake Kit- -Uni Fliter- -DPK Clutch Kit- -Custom Snorkel- -Jets-R-Us Jet Kit-

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