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Discussion Starter #1 (Edited)
I have checked the different threads on the Alfabb to figure out what to do. Also have downloaded the Spica fuel supply diagnostic guide and the roadside fault analysis/repair guide.(great stuff)

All indicators point to the fuel filters or at the very least .... we need to start here since we dont know when they were changed last and as a matter of routine maintenance need to be changed anyway. In addition I figure this is something that I can do.

I planned to change out the rear filter first .... then the front.

My problem ....where is the rear fuel filter ???? :confused:
I can't find it. I mean there doesnt appear to be one. I've looked on both sides of the rear axle area . Am I missing something here?
And from what I've read ..the rear fuel filter sits somewhere between the gas tank and the fuel supply pump ...correct ???.

And from what I can tell is that there appears to be a fuel line leading from the bottom of the gas tank (on the rear left....drivers side ) that leads to a line that goes over the tranaxle and then straight to the fuel supply pump.

Is this the area where there should be the rear fuel filter? IE, on the left side

Now , according to the Roadside analysis /repair guide ... you can bypass the rear filter and rely solely on the front filter providing that you change out both front and rear at the first available opportunity.

My gut feeling here ( unless I'm missing something ) is that a previous owner did exactly this .... and did not tell anybody.

If this is the case ..then that means my front filter is probably in bad shape...and needs to be changed. And by swapping it ... the fuel pressure light "should go out" .....right. I mean the car stills runs fine ... I can drive it...IE. it's still getting fuel.

Or should I just cut the line leading from the gas tank ( left side ) to the fuel supply pump ....and install / and clamp down the rear fuel filter somehow ??

I'm not exactly sure what to do first on this repair so any. help, suggestion, advice or intuitive brilliance would (as always) be immensely appreciated.


:cool: Alfsedan
 

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Discussion Starter #2
Well I changed out the main fuel filter today....

but the fuel pressure gauge is still on.....:confused:

Tomorrow I'll splice the rear fuel filter into the existing fuel hose.......

and hope that does the trick.

:cool: alfsedan
 

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I "installed" the rear fuel filter...

and the pressure gauge is still on. I guess it's time to check the fuel pressure.

From what I can figure from the Spica Fuel Supply System Diagnostic Guide...It's probably the fuel supply pump..... or the in-tank boost pump.

Although I haven't a clue if I have one of those in my car. (in-tank booster).

The "guide" said that only the 80-81 models had a ITBP but that the 77-79 models may have been retrofitted with the ITBP.

Anyway,,,, We'll see what the pressure reading is and try to figure out what to do next.

:cool: Alfsedan
 

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My fuel pressure light on my GT is on.........I do believe it's either the rear pump dieing or it needs a new filter. I hoping a new filter does it!!:rolleyes:

The pump is noisy though..........

.
 

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I was hoping that all I had to do.....

My fuel pressure light on my GT is on.........I do believe it's either the rear pump dieing or it needs a new filter. I hoping a new filter does it!!:rolleyes:

The pump is noisy though..........

.
was to change the filters and all my problems would be solved:eek:.....

but nooooooo ! :(

Cuz man ...I don't want to buy a new supply pump. There not cheap....ya know.

Anyway ya'll I checked my fuel pressure and it reads:

12 psi battery only (engine not running) and
15 psi with engine running.

and according to the Spica Fuel Supply System Diagnostic Guide....

..this is good........right?........Anyone care to elaborate.........anyone?

If this is good then my supply pump is good and that means my solutions lies elsewhere......correct?............anyone?

The Spica Guide is a great tool to have ( and "thank you" to whoever put it together ) but it takes a while for my brain to function :eek: and understand it . And even though I dont know if I have an in-tank boost pump ..( is there an easy way to determine that? ).........The guide does suggest how to diagnos it.

What's a deadhead set-up when checking the boost pump?.... I'm not getting that at all. I have a brain :eek: malfunction on that terminology.

Anyway...that's where we are at right now,,,,Thanx for listening.

:cool: Alfsedan
 
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