My Willys 3A and 3B Community

TECH FAQ SECTIONS => Engine compartment => Topic started by: GunnersWillys on July 25, 2022, 05:24:40 PM

Title: Fuel Pressure
Post by: GunnersWillys on July 25, 2022, 05:24:40 PM
Odd question, maybe someone can enlighten me.  My 3B carb was leaking fuel, overflowing.  The thought was it might have too much fuel pressure.  Ended up just being trash in the line in the horn.

In the meantime I spliced in an inline fuel pressure gauge I'd used before.  It read zero.  Thinking it was broken I ordered a new one.  It also reads zero.  Range is zero to fifteen pounds.  Willys runs fine now so it has fuel pressure.  How do I explain no reading? 

Just curious.  Tks.
Title: Re: Fuel Pressure
Post by: Rus Curtis on July 25, 2022, 09:59:47 PM
Don't know what your readout looks like, but would you be able to read 4-5 lbs?

Paragraph F-35, in the Service Manual gives directions on testing with a readout of 4 3/4 psi at 1800 rpm.  This paragraph suggests a T fitting for hookup. Not sure if that's an option for your gauge.

Title: Re: Fuel Pressure
Post by: GunnersWillys on July 26, 2022, 08:27:34 AM
Yep, used a T fitting.  And checked it at multiple RPM's.  Weird, but not a big deal.  Working fine now.