Builds The Oddball 80 - Middle East GX Renovation (4 Viewers)

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I’ll try to unplug the MAF tomorrow. I have another one here of unknown condition I can swap in. Good idea.

First thing I did was fog it looking for vacuum leaks.

Fuel tank is a fresh cleaned tank. No trash at all in the filter. I have a powersurge setup that allows me to have clear filters up range. The pressure gauge is after the PS and before the rail.

No cats.

Wouldn’t a bad O2 sensor toss a code?

Ah.

Yes and maybe no. This is a EFI retrofit, right? It could be possible that the CEL is not tied directly to the ECU maybe. Especially if it was carbed originally.

How does this recent stalling compare to the stalling it originally did when you first got it?
 
No. That was for sure the bad fuel pump. The truck ran good after the first fuel pump fix, the 7 miles before the HG blew and the 11 miles Saturday.

Weird.

I decided last night to buy an in tank unit and Hotwire it into the truck. I’m going to try to find a new regulator and go from there. From what all I read this sounds just like a faulty regulator. Maybe this Powersurge is sending too much pressure for the old regulator to handle.
 
No. That was for sure the bad fuel pump. The truck ran good after the first fuel pump fix, the 7 miles before the HG blew and the 11 miles Saturday.

Weird.

I decided last night to buy an in tank unit and Hotwire it into the truck. I’m going to try to find a new regulator and go from there. From what all I read this sounds just like a faulty regulator. Maybe this Powersurge is sending too much pressure for the old regulator to handle.
If you end up running AN from the tank to the engine I can dig up the Earl’s part number for the appropriate banjo fitting. Was kinda hard to find.
 
Found this place on Amazon while looking for VW hardware. I started ordering direct from their website and it's 2 day shipping usually and they have an insane amount of metric hardware. There's a banjo section.

 
Found this place on Amazon while looking for VW hardware. I started ordering direct from their website and it's 2 day shipping usually and they have an insane amount of metric hardware. There's a banjo section.


This is a great find. Any idea what size those fuel rail banjos are??

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Since I’ve never laid eyes on an 80 fuel pump setup other than this manual one. You are saying this is the banjo that fits coming out of the plate. Stock trucks (I mean normal ones) have a banjo and hard line there I’m assuming?
Yeah. Looks like this:

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Sadly, I’ve seen some pretty bad conglomerations of fittings to adapt to AN done right there.
 
Here is a pretty neat billet canister style fuel filter I can recommend. I mounted mine up high on the frame rail. Couldn’t be easier to access.

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Both of my fuel lines going into the rail/pulse and out of it at regulator are bulb push on on one end and banjo on the rail end.

Is that standard? I can use a EFI rated hose clamp or I could try that site above and buy new banjo and just eliminate the old metal lines.
 
Can't say I would be happy with the way that cat protection hangs down, besides that it looks great. 😉

Once I cut that resonator out I may just redo that part with them on the truck. Tuck it up some.
 
Both of my fuel lines going into the rail/pulse and out of it at regulator are bulb push on on one end and banjo on the rail end.

Is that standard? I can use a EFI rated hose clamp or I could try that site above and buy new banjo and just eliminate the old metal lines.
Recalling from memory that mess that was under the truck when you got it I’d start from scratch. Super simple. I don’t know exactly what fittings you would need to attach AN line to the 3fe side of the hose though. The return line at the tank fill be hose clamped though for sure.
 
The regulator has a vacuum port. I have it hooked to one of the two ported vacuum spots on the top of the plenum. When this all goes back together I need to confirm ported vacuum is OK here versus constant vacuum.

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The regulator has a vacuum port. I have it hooked to one of the two ported vacuum spots on the top of the plenum. When this all goes back together I need to confirm ported vacuum is OK here versus constant vacuum.

View attachment 2485254
Yeah I was wondering about that vacuum source. I would look back at the diagram and see what the OG vacuum source was.
 
Yeah I was wondering about that vacuum source. I would look back at the diagram and see what the OG vacuum source was.

Well all that stuff is gone. I’m thinking ported is fine. Usually fuel related things are fine getting a pull under throttle and not at idle.

If you can tell from this holla. I can’t tell

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The regulator has a vacuum port. I have it hooked to one of the two ported vacuum spots on the top of the plenum. When this all goes back together I need to confirm ported vacuum is OK here versus constant vacuum.

View attachment 2485254
Yeah I was wondering about that vacuum source. I would look back at the diagram and see what the OG vacuum source was.

I pulled the head on my 3rz to get reworked and when I went back together I deleted a few things not needed. Not all the vac lines on the plenum are constant vac and this threw me off. Consult the diagram and run the hoses just as it shows. You may need to find an EFI diagram if the original wasn't replaced. The vac line on the fuel regulator isn't really needed until you start adding forced air.

I run 4bar +25psi (80psi) on my VW and it has regular fuel injection hose with those normal aggravating clamps that you need pliers and good luck to remove. I've yet to have one blow off.
 

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