Fuel Question

gobucks · Post by **gobucks** » Fri Aug 08, 2008 10:38 pm

if i apply a vacuum on the line going to the petcock how fast should the fuel be coming out of the line, presently it is just a drip about every two to three seconds.

Clivester · Post by **Clivester** » Sat Aug 09, 2008 12:12 am

It should flow more than that. Imagine an open bottle with the same diameter tube as your gas line attached to the bottom and the fuel at the same height as is in your gas tank to the end of the tube. That's how fast it should flow.

Remove the petcock and soak the inside with carb cleaner. Also remove the filter inside the tank and make sure its clean.

Clive

gobucks · Post by **gobucks** » Sat Aug 09, 2008 10:59 am

ah, this is probably why it dies when it hits high rpms, it just runs out of gas in the bowl because the supply is so slow.

Clivester · Post by **Clivester** » Sat Aug 09, 2008 12:17 pm

Yep, that would be a classic symptom

Kenny_McCormic · Post by **Kenny_McCormic** » Sat Aug 09, 2008 12:48 pm

Fast dribble.

PimpinSpree · Post by **PimpinSpree** » Sat Aug 09, 2008 1:10 pm

Clivester wrote:
Remove the petcock and soak the inside with carb cleaner. Also remove the filter inside the tank and make sure its clean.

Clive

will carb cleaner damage the diaphragm? and always remember. don't blow compressed air into the petcock, unless you wan it to always flow..... like mine

Clivester · Post by **Clivester** » Sat Aug 09, 2008 5:59 pm

PimpinSpree wrote:
will carb cleaner damage the diaphragm? and always remember. don't blow compressed air into the petcock, unless you wan it to always flow..... like mine

I've used the kind that comes in spray cans to clean out obstinate ones with no apparent damage. The "parts cleaner" type stuff is a definite no-no though.

Sometimes trying to move the diaphragm by attaching an ear cleaning type bulb to the vacuum line while soaking with cleaner helps. Don't overdo the pressure or suction though.

Yeah PimpinSpree you're right compressed air not a good idea. I used a blunt wooden skewer a couple of times on 2 basket case petcocks to help release stuck diaphragms (going in from the fuel side). On one it worked great and on the other I converted it to an always flow

Maybe worth trying if nothing else works and you are just about to buy a replacement.

greenninja37 · Post by **greenninja37** » Tue Aug 12, 2008 1:18 am

how do i know if mine is clogged up? i dont have a vaccum to use, but when i pull off the tube ....nothing will drip out at all,,,,,my spree hasnt been able to start and idk if this is the reason why

ALOW1 · Post by **ALOW1** » Tue Aug 12, 2008 2:21 am

greenninja37 wrote:how do i know if mine is clogged up? i dont have a vaccum to use, but when i pull off the tube ....nothing will drip out at all,,,,,my spree hasnt been able to start and idk if this is the reason why

Take the vacuum line off and put it in your mouth and suck, it dont take much to get the valve to open.