Fuel delivery issue?

[effjay55]

Sounds like you are making some progress and are on the right path.

The fuel filter in itself should be able to handle the flow.
That said… the filter element could be clogged up with shmag limiting flow, the seals could be dried out allowing air to be sucked in, and/or there’s too much shmag in the fuel pickup line and it’s limiting flow.

Can you have the fuel filter vertical while it’s running to bleed the air out of it? If you successfully get the air out. Does it come back?

If you blow air into the tank does it go through freely? Do you hear bubbles in the tank?

I cleaned out the filter pretty well, and when I blow through it, it doesn't seem clogged up in anyway.
I haven't tried moving the filter with the engine running, but I don't have much slack on the lines, not even sure I can get it vertical.
I did blow into the line that goes to the tank and heard bubbles, at one point I think I did feel some resistance though; I'm eager to drain all the fuel out and do a flush at this point...

I'd say use the rebuildable unit until the sediment stops or at least stops being a problem, then put on a factory filter which won't leak air. Congratulations on the electronic pickup. I think you're on the tight track!

That's a good call, didn't even think of that. Tyvm!

I agree, It sounds like it's sucking air at the hose, clamps or filter housing. Glass filters are dangerous. I ran one of those for yrs, till a friend saw it. He almost lost a car when his broke. You can find clear plastic filters if you want to see.

Yeah I couldn't really believe it was glass, seems extremely fragile and dangerous. Tightening the thing is nerve wracking, since theres nothing stopping you from over-tightening and breaking it.

 

[trainbufftony]

Yeah I couldn't really believe it was glass, seems extremely fragile and dangerous. Tightening the thing is nerve wracking, since theres nothing stopping you from over-tightening and breaking itit.

Those filters seem neat, but I'd hate to have one break on the trail Toyota OE, was steel, and steel island to beat. I think those flashy hot rod parts from auto zone, are about as tacky as wet paint. The more of that kind of stuff I see on a vehicle, the less involved I try and get. The reasoning is exactly what you're finding here.
These "generic" parts often solve one problem and create 3 others... For example, where's the threaded line that screws onto your factory filter?
It's been eliminated so they can run a cheap auto zone filter which now leaks air.
Had one problem>bought generic part>modified to fit>still has problems, and correct parts now no longer fit.

I realize that you didn't do this, but you can learn from their mistakes, by analyzing carefully what went on... I don't love that generic fuel pump either. Be thankful they didn't convert it to electric, and hack something else in the process.

 

[JohnnyC]

Oem was steel after it was glass

Many guys run them and convert over from their steel to them as you can see what’s going on

I have run for the past 30 years plastic VW filters that you can see inside… love them

Also been using my electric fuel pump for those 30 years … ever since the oem fuel pump leaking fuel into the crankcase

The electric pump lasted a good 200k+ miles and is cheap box low pressure pump

I’m thankful I went to electric those years ago

It’s to each own

The F engine is stupid and doesn’t care how it gets the gas air and spark to paraphrase Fj40Jim

 

[trainbufftony]

Oem was steel after it was glass
View attachment 3640989

Many guys run them and convert over from their steel to them as you can see what’s going on

I have run for the past 30 years plastic VW filters that you can see inside… love them

View attachment 3640990


Also been using my electric fuel pump for those 30 years … ever since the oem fuel pump leaking fuel into the crankcase

The electric pump lasted a good 200k+ miles and is cheap box low pressure pump

I’m thankful I went to electric those years ago

It’s to each own

The F engine is stupid and doesn’t care how it gets the gas air and spark to paraphrase Fj40Jim

I'm glad the electric pump worked for you.
I've had exactly the opposite experience.
I bought a replacement electric pump for a Ford once, it put out 60PSI and sank the floats on my carb. I went back to the auto parts store, they sold me a fuel pressure regulator. Great idea, except at WOT the auto zone crap couldn't flow enough go juice to keep a 460 cubic inch V8 spinning to get on the freeway. After trying 2 more cheap fuel pressure regulators, I bought one for a dragster, set up for dual carbs. I plugged one of the holes, set it to 4 psi and I had a nice garden hose of fuel feeding that motor. Anyone who has a 460 knows that's what's required. Electric fuel pumps have their place, but it's not here...
Not when toyota will sell you a brand new one for $200, which bolts on and requires no modification.

The whole process cost me significant time and money, including wasted gas from a week or so driving with a buried float, and a stream pouring onto the street off the back of my block.

You wouldn't believe how many hot rods I've found with similar problems because someone decided that a electric fuel pump is what they want!
Often these vehicles burn 3x what they should and the owner is totally unaware anything is wrong...

 

[JohnnyC]

I stopped reading after Ford

 

[Shark56]

Have you checked flow from the fuel pump to the carb.
I'm not 100% sure from the pic but I believe that is an after market Fuel Pump.
Not saying it is a bad thing but it might have something to do with not getting enough fuel with a slightly plugged filter. Even the Kyosan OEM pumps are sensitive to filter blockages.

 

[trainbufftony]

I stopped reading after Ford

Afraid you might learn something?
You can have your brand loyalties, but these engines all run on the same basic principles and there's relatively few problems that they can have, all of which are simple to diagnose regardless of the badge on the grille.
Point of the story was to show how going to auto zone for parts that don't actually fit your vehicle can spiral out of control and have you fixing/modifying things which weren't problems before, and which take real money to put right again.

 

[JohnnyC]

Not afraid at all! I welcome knowledge… some people might say it consumes me

especially when it leads to solutions and saves time and money in the long run. Don’t confuse a difference of opinion with a pissing match … these are just trucks … do with them as you feel fit

If you believe you're in a position of superiority and want to continue asserting yourself, go ahead and share your enlightening knowledge

 

[effjay55]

ple, where's the threaded line that screws onto your factory filter?
It's been eliminated so they can run a cheap auto zone filter which now leaks air.
Had one problem>bought generic part>modified to fit>still has problems, and correct parts now no longer fit.

I agree with the general sentiment about swapping things out for cheap auto zone parts, but in this case I am happy to inform you that the OEM filter I got actually doesn't have any threads, so I guess I got lucky there. I will say though, this fuel filter was absolute garbage and was heavily restricting flow. I have since then put in another, better universal filter to see if it would make a difference and it's night and day, it ran great. There was a slight hiccup once or twice, but I suspect its dirty gas or junk in the fuel lines. Doing a full cleanse this weekend hopefully and after that the new oem filter goes in.

Have you checked flow from the fuel pump to the carb.
I'm not 100% sure from the pic but I believe that is an after market Fuel Pump.
Not saying it is a bad thing but it might have something to do with not getting enough fuel with a slightly plugged filter. Even the Kyosan OEM pumps are sensitive to filter blockages.

I plan on doing some pressure testing, hopefully this weekend, but the new fuel filter I put in seemed to improve the situation a bunch. The fuel pump seems to be doing its job much better now.

Also when blowing through the og fuel filter I just got vs the universal fuel filters, the flow is much less restricted... so guessing that the plays into it.