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#723891 - May 22nd 2017 5:37 am 1978 Ford E150 351W Fuel Test Pressure Port?  
Joined: Feb 2013
Posts: 14
SteveYangPDX Offline
stranger
SteveYangPDX  Offline
stranger

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

#723910 - May 22nd 2017 4:18 pm Re: 1978 Ford E150 351W Fuel Test Pressure Port? [Re: SteveYangPDX]  
Joined: Aug 2001
Posts: 11,324
Reed Offline
Maniac
Reed  Offline
Maniac

Joined: Aug 2001
Posts: 11,324
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!
#723913 - May 22nd 2017 5:24 pm Re: 1978 Ford E150 351W Fuel Test Pressure Port? [Re: SteveYangPDX]  
Joined: Aug 2001
Posts: 11,324
Reed Offline
Maniac
Reed  Offline
Maniac

Joined: Aug 2001
Posts: 11,324
Fircrest, WA
Dang, I need to use spellcheck....


Windows- they're what make a van worth owning!
#723914 - May 22nd 2017 7:03 pm Re: 1978 Ford E150 351W Fuel Test Pressure Port? [Re: Reed]  
Joined: Sep 2005
Posts: 8,108
CatFish Offline
carpal tunnel
CatFish  Offline
carpal tunnel

Joined: Sep 2005
Posts: 8,108
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

#723918 - May 22nd 2017 8:33 pm Re: 1978 Ford E150 351W Fuel Test Pressure Port? [Re: CatFish]  
Joined: Aug 2001
Posts: 11,324
Reed Offline
Maniac
Reed  Offline
Maniac

Joined: Aug 2001
Posts: 11,324
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 8:34 pm.

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

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