Technical Tips > Post 84

C4 87 Fuel issues.

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Vettech:
Yes right on Rosco, I just read the same article. All fuel clear to light yellowish. But the fuel I just pumped is a lovely lemon yellow, anyway I didnt waste it - I frew it in the Falcon.

MY081:
Hey Vettech what a great way to dispose of poor quality fuel and it couldnt possibly harm the perfomance caracteristics of a FORD . Lol

Vettech:
I know you said poor quality, but it was 98 from the servo at Bella Vista (sunday), brand I cant remember, and all previous fuel has been 98 out of the BP/macdonalds on Cowpasteur Rd at Cecil Hills. One thing I have noticed of late is when I open the fuel cap, which I do slowly, I get great amount of schussing, either air in or pressure out. But I open the Falcon sitting right next to it and there is NO pressure at all. Of course one may seal better than the other. I wonder, cold night, partial vac in tank, start up, pump labours against vac, engine misses and farts around, turn a few corners, fuel sloshes, gives off vapour and voids the partial vac. QUESTION: Are fuel caps /tanks supposed to hold pressure or vac in the tank. I thought the cap was suppossed to vent to atmosphere, and that charcoal canister thingy was supposed to suck all vapours out of the tank ????.

sabre:
Cap should seal. Vent is through canister. Put a gauge on the fuel rail. Should come up to 35 - 3 psi at ignition on and stay stable while running. I've got the right gage if you need one.

Vettech:
Thanks Sabre. As we saw when I visited, the Fuel pressure is ˜30psi, which is down on recommended. I'll do some more testing, but not before we go up to Nelson Bay. I loved your house and its surroundings - veeeery nice.

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