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another forty quid latter gravity fed emptied contents of half a tank of fuel in back of van carb rebuilt by specialist who is also scratching his head tab is flush with suround all new parts .even stretched a spring because by now i have eight to choose from no residuall pressure from the tank and with the vacume pipe disconected wot the FU85030//;lmnCK is going on guy,s

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another forty quid latter gravity fed emptied contents of half a tank of fuel in back of van carb rebuilt by specialist who is also scratching his head tab is flush with suround all new parts .even stretched a spring because by now i have eight to choose from no residuall pressure from the tank and with the vacume pipe disconected wot the FU85030//;lmnCK is going on guy,s

Pressure in the tank ( getting warm in van) will force some fuel out, but if it emptied all the fuel out then you need to check the fuel needle valve seat. (if you have replaced the fuel needle.

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Hi pete

its a new needle and seat and diaphrams and no pressure in the tank,i made sure of that. Its a mystery i even disconected the vacume pipe overnight .it must be the head of fuel operating against the resistance of the tension spring some how ,haveing said that i stretched it just as a trial .do you think there is another route fuel could take other than through the needle,i have chucked enough money at it but it is frustrating i can,t get to the bottom of it

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Not sure what it is without stripping it and double checking, even if the tank is above the carb it should not leak.

Can you borrow another carb to try? Just to try.

Can't think of any other route it can take through the carb at the moment.

Sent from my iPhone using PMC Forum mobile app

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YEA there is no question it must be getting past the cutoff valve il use a dummy header tank bean can or somthing i need to no for my own satisfaction .i noticed as the last of 2days fuel was making it,s way down the pickup pipe past the inline filter it came to rest when it got level with the center of the throat of the carb.if that aint takeing the piss il have another pay tmo

cheer,s pete

dave

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