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urgent PHBH overflow probs
Posted: Wed Jul 18, 2012 8:14 am
by purple_pill67
I have a phbh30 fitted whoch has decided to pretty much empty a fuel tank all over the road outside my house and on the way to work.
It wad coming out the overflow pipes.
The only thing ive fiddled with was the idle screw, could having it tio far in cause this?
Re: urgent PHBH overflow probs
Posted: Wed Jul 18, 2012 8:59 am
by Beanhead
if its coming out of the overflow pipes i would thing the needle valve has stuck, happened to me the other week...
Re: urgent PHBH overflow probs
Posted: Wed Jul 18, 2012 9:52 am
by coaster
Beanhead wrote:if its coming out of the overflow pipes i would thing the needle valve has stuck, happened to me the other week...
Agreed, there is nothing that you could do to cause this by adjusting the idle/mixture screws. It could also be a punctured float, it has happened to me as well as the above sticking needle valve.
Re: urgent PHBH overflow probs
Posted: Wed Jul 18, 2012 11:37 am
by purple_pill67
Cheers, just hope I cab get to petrol station/home then ill checj .
Re: urgent PHBH overflow probs
Posted: Wed Jul 18, 2012 12:01 pm
by drunkmunkey6969
Hit your carb with a hammer.....it will free the floats/valve which is clearly stuck open.
Re: urgent PHBH overflow probs
Posted: Wed Jul 18, 2012 8:17 pm
by purple_pill67
Bear with me cos I dont know what im doing.....
Took the main jet out, float bowl out, gave it a jig about. Took out slide/needle put it all back together. Still doing the same :/
Re: urgent PHBH overflow probs
Posted: Wed Jul 18, 2012 11:09 pm
by coaster
purple_pill67 wrote:Bear with me cos I dont know what im doing.....
Took the main jet out, float bowl out, gave it a jig about. Took out slide/needle put it all back together. Still doing the same :/
Did you look at the float to see if it had any fuel in it?
Re: urgent PHBH overflow probs
Posted: Thu Jul 19, 2012 6:49 am
by purple_pill67
Ill check again at the weekend.
Re: urgent PHBH overflow probs
Posted: Thu Jul 19, 2012 2:26 pm
by Beanhead
float needs to come off, you have said you only took the float bowl off. long nose pliers, pull out the pin and the needle valve should come out with it, check the needle and the screw in valve part.
Re: urgent PHBH overflow probs
Posted: Thu Jul 19, 2012 2:51 pm
by Darrell Taylor
as Dan said without stripping a tap on the bowl side with the plastic handle of a screwdriver will sometimes dislodge the particle and allow the valve to seat again if not next least work remove the bowl and raise/lower the float flick the fuel on raised should stop the flow lowered should flow freely, if when raised it doesnt stop then a particle will still be stopping the tip from seating but repeated raise/lower generally flushes out the debris last chance is remove float pin and needle valve clean the tip and turn on fuel for a second to flush
a last possibility is when adjusting the mix screw if you moved the carb to get in ,the carb may now be resting on a cowling/toolbox/engine mount and vibrating but if just parked up not running and leaking then prob needle valve