Why do I have high fuel pressure...

[steve meltzer]

All mechanical...at the end of the fuel log/rail there's liquid filled line that goes to the gauge.
(autometer). sa

[patrickt]

Originally Posted by steve meltzer

All mechanical...at the end of the fuel log/rail there's liquid filled line that goes to the gauge.
(autometer). sa

Do you feel like buying a new $100 mechanical fuel pump and just rolling the dice to see if the new pump makes everything better (without the need to turn on your electric pump)? I think that's probably what I would do. I just don't like leaving a part on the car that is not up to snuff. I don't know if it could actually leak much (either externally or internally) -- I drove a car for two years decades ago that dripped a drop of gas out of the fuel pump diaphragm every five or six seconds and nothing ever happened, other than poor gas mileage.

[steve meltzer]

When all's said and done, it would cost about $100 to buy the blocking plate and find the right aeroquip or equivalent way to connect the two fuel lines. What pump would you buy? Might even be easier, in some ways, to replace the mechanical pump than to figure out the re-plumb. thanx steve

[patrickt]

Originally Posted by steve meltzer

When all's said and done, it would cost about $100 to buy the blocking plate and find the right aeroquip or equivalent way to connect the two fuel lines. What pump would you buy? Might even be easier, in some ways, to replace the mechanical pump than to figure out the re-plumb. thanx steve

When I threw out a hundred bucks, I was thinking of this tried and true pump: https://www.summitracing.com/parts/CRT-M6905/ But, others might have other suggestions. And you should also expect somebody to complain about you having a fuel line running in to the dash without an isolator. I've never touched an isolator, so I won't comment on it.

[steve meltzer]

Thanx for the link. I have an isolator between the fuel log and the gauge. I'd be afeared to run gasoline into the cockpit...hate for my cigar to light it up. s

[steve meltzer]

Got out to the car this PM and despite kicking on the e-pump the pressure never got to be more than 3-4 PSI, the car started but died about 100' later. Couldn't restart and pressure remained at 3 with or without the e-pump. Cranked OK, but would never fire. I needed to get home, so my wife took me, leaving the car parked at work. Tomorrow I'll see if I have spark or fuel or whatever I can determine. Could the mechanical pump fail in such away that the e-pump can't bring fuel to the rail? Or, is this just another problem before I start cussing, swearing and throwing dangerous objects? thanx s

[patrickt]

Originally Posted by steve meltzer

Got out to the car this PM and despite kicking on the e-pump the pressure never got to be more than 3-4 PSI, the car started but died about 100' later. Couldn't restart and pressure remained at 3 with or without the e-pump. Cranked OK, but would never fire. I needed to get home, so my wife took me, leaving the car parked at work. Tomorrow I'll see if I have spark or fuel or whatever I can determine. Could the mechanical pump fail in such away that the e-pump can't bring fuel to the rail? Or, is this just another problem before I start cussing, swearing and throwing dangerous objects? thanx s

Well look on the bright side. A no-start/no-run condition is a heckuva lot easier to figure out than an intermittent, car still runs, but misbehaves condition. Even if the car starts, I would not drive her home -- 1) you could stall on the highway, which is a danger; and 2) there's a small chance that the loss of fuel pressure is the result of "internal bleeding" in to the oil pan. I don't think that's happening, but I'm not going to risk your engine on it. Put her on a flatbed and get 'er home. Then we'll figure it out.