fuel evaporating

Have posted on this topic b4, but need some final advice please.

My pinto engined kit car seems to lose all fuel from carb after standing for a week or two, and needs a lot of cranking to get fuel through for starting.Have tried non return valves and things - but to no avail. Following advice from last postings, I have got hold of an electric pump, and tried it "in series" with the mechanical pump (both sides tried - I.E.- b4 mech pump and after) but mech pump cannot suck / blow through elec pump when it is switched off. I don't want the elec pump running all the time - just a short burst to prime the carb as in the circumstances above.

So.I am considering fitting it "in parallel" with the mech pump. Thought I would use "T" pieces or "Y" pieces in the fuel lines, either side of mech pump.

Does NE1 foresee any problems with such an arrangement? Also, does NE1 know where I can get suitable "T or Y" couplings - or should I make up them myself (have a small lathe and lots of bits of ali /brass rod /tube)

Any comments appreciated, especially helpful ones ! :)

Reply to
Tim Mackey
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Of course. The float bows are vented to atmosphere, so it just evaporates.

Well thats because it evaporates! It cant return anyway because the fuel pump already is a non return valv...

Err why? They dont consume current unless actually pumping... Mechanical pumps are plain crap...

Forget about the crappy mechanical one. At best they are a waste of time/space/power/money.

Bin the M pump, fit a decent electric one, with a 1.5 to 2 mm orriface (jet) that allows it to return to the tank at all times. This vents vapour, and circulates fuel, so vapour locks and fuel starvation when hot never occur - And a regulator/filter set to 1.5 to 3 psi will help too.

Reply to
Burgerman

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