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1978 Ford E150 351W Fuel Test Pressure Port? #723891
May 22nd 2017 4:37 am
May 22nd 2017 4:37 am
Joined: Feb 2013
Posts: 14
Portland OR USA
S
SteveYangPDX Offline OP
stranger
SteveYangPDX  Offline OP
stranger
S
Joined: Feb 2013
Posts: 14
Portland OR USA
It appears my fuel pump may be bad. Can't find the fuel test pressure port. Can anyone tell me if the 351W has a fuel test pressure port?

Thanks!

Steve

Re: 1978 Ford E150 351W Fuel Test Pressure Port? [Re: SteveYangPDX] #723910
May 22nd 2017 3:18 pm
May 22nd 2017 3:18 pm
Joined: Aug 2001
Posts: 11,429
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 11,429
Fircrest, WA
Mechaical fuel pump vehicles do not have a fuel pressure test port like electronic fuel pump EFI vehicles. The way you test a fuel pump on a vehcile with a mechanical fuel pump is (1) pull the oil dipstick and see if it smells like gas (a blown fuel pump duiaphragm can let fuel leak into the crankcase) (2) disconnect the fuel inlet form the carb and the coil wire form the distributor, then crank the engine for a specified amount of time letting the fuel pump into a glass or hard plastc bottle and measure how much fuel is pumped over the set period of time.

On later (1988-up) fuel injected 351s, the fuel pressure test port is on the driver's side fuel rail.


Windows- they're what make a van worth owning!
Re: 1978 Ford E150 351W Fuel Test Pressure Port? [Re: SteveYangPDX] #723913
May 22nd 2017 4:24 pm
May 22nd 2017 4:24 pm
Joined: Aug 2001
Posts: 11,429
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 11,429
Fircrest, WA
Dang, I need to use spellcheck....


Windows- they're what make a van worth owning!
Re: 1978 Ford E150 351W Fuel Test Pressure Port? [Re: Reed] #723914
May 22nd 2017 6:03 pm
May 22nd 2017 6:03 pm
Joined: Sep 2005
Posts: 8,212
Georgia, USA
CatFish Offline
carpal tunnel
CatFish  Offline
carpal tunnel
Joined: Sep 2005
Posts: 8,212
Georgia, USA
Originally Posted by Reed
Dang, I need to use spellcheck....

rofl
I was wondering what a "duiaphragm" was?

Maybe some kind of birth control for ducks...... laugh


"Don't be distracted by criticism. Remember--the only taste of success some people will ever get is to take a bite out of you."
Re: 1978 Ford E150 351W Fuel Test Pressure Port? [Re: CatFish] #723918
May 22nd 2017 7:33 pm
May 22nd 2017 7:33 pm
Joined: Aug 2001
Posts: 11,429
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 11,429
Fircrest, WA
Originally Posted by CatFish
Originally Posted by Reed
Dang, I need to use spellcheck....

rofl
I was wondering what a "duiaphragm" was?
Maybe some kind of birth control for ducks...... laugh


A "duiaphragm" prevents DUIs. It blocks the alcohol. grin

Last edited by Reed; May 22nd 2017 7:34 pm.

Windows- they're what make a van worth owning!

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