03-30-2015, 12:51 PM | #21 |
Senior Member
Join Date: May 2010
Location: Northern California,coast
Posts: 552
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Re: fuel pressure?
YOUR FUEL PUMP is getting ready to give it up ..... the diaphragm is; old, hard, and can't flex as needed to pump at lower pressure.....so this is where to high pressure is coming from... it will soon break, ...look for it....get the pump rebuild by one of the "fordbarnrs", that do pumps......OLD....BILL
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03-30-2015, 01:24 PM | #22 |
Senior Member
Join Date: May 2010
Location: Solihull, England.
Posts: 8,732
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Re: fuel pressure?
Does that type of carb use an adaptor and a weatherhead type fitting? Not a ford nut type fitting? I'm only familiar with regular 94 type carbs.
Sorry no direct experience, but here's some input anyway. Brakes don't leak from the fittings with a thousand plus psi applied to them. If the fuel is leaking from the fittings it is not because of the 5psi pressure. It is because of faulty fittings. If the fuel is overcoming the needle valve and then subsequently leaking down the carb and dripping off the fittings, then it is either the needle valve faulty or excessive fuel pump pressure. FWIW I have had success using an older weaker spring in an otherwise newer pump to overcome a fuel pressure problem. I have also swapped more modern needles out for steel tipped needles to stop leaks too. Mart. |
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03-30-2015, 06:46 PM | #23 |
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Join Date: Feb 2011
Location: Buford, GA
Posts: 380
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Re: fuel pressure?
Yes ...both pump and carb were rebuilt by Barner "ken ct".
which I highly recommend. He definitely went the extra mile for me. I got a Mr. Gasket fuel regulator in the mail just today to drop the pressure down to 2.5 lbs at ken ct. suggestion. He also suggests a total tune up in hopes to cure the slight hesitation that l have. Randy |
03-31-2015, 01:43 AM | #24 | |
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Join Date: Jul 2010
Posts: 2,593
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Re: fuel pressure?
Quote:
In post #13 you said the pump wasn't rebuilt? Now it was? If Ken rebuilt both, ask him about your leak, maybe an easy fix, as you have said "it was doing the same before it was rebuilt" Martin. |
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03-31-2015, 08:42 PM | #25 |
Senior Member
Join Date: Feb 2011
Location: Buford, GA
Posts: 380
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Re: fuel pressure?
Yes...he ended up rebuilding both..his recommendation is to install a fuel pressure regulator and bring pressure down to
2 1/2lbs and to loose the electrical pump which I only use on start ups. Randy |
04-01-2015, 07:39 AM | #26 |
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Join Date: Jul 2010
Posts: 2,593
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Re: fuel pressure?
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Why don't you pop the lid of to see what the actual problem is? You should not need a regulator, if the pump is to spec, I know your little gauge says 5, but those little cheap ones arnt that accurate. The carb has a fiber washer up the top where the needle valve goes in. It's not uncommon for the 885 To leak there. Good luck, Martin. |
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