I recently picked up a 84 fox. Don’t know much about it but it’s not stock from the looks of it. Been going through replacing the fuel system due to it sitting for over 10 years. It was pretty rusty in there. Figured I’d replace the fuel filter along with everything else but I can’t seem to find it. It’s not in the stock location. I’ve followed the lines from the tank to the schrader valve and nothing. My buddy tonight said maybe the fuel filter is connected to the fuel rail? Is that an option? I don’t have a picture but there is something that resembles what might be a fuel filter connected to the fuel rail on the left side towards the back of the engine. Is that what I’m looking for? Any help helps. I can add more pictures tomorrow
Fuel filter relocation?
- Thread starter hecdawwg
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An 84 Fox? Is that correct?
That engine and harness are all out of an 87+. I mean... I've seen swaps before nut the the A/C and smog too?
84 Mustangs came from the factory with a carburetor.
Mods I see:
C&L elbow and filter
Cobra upper and lower
Brand X Caster/Camber plates
What's the rest of the car look like?
Is this the "thing" you're referring to?
I blew up the image and I still can't tell what it is
Maybe somebody else will recognize it.
That engine and harness are all out of an 87+. I mean... I've seen swaps before nut the the A/C and smog too?
84 Mustangs came from the factory with a carburetor.
Mods I see:
C&L elbow and filter
Cobra upper and lower
Brand X Caster/Camber plates
What's the rest of the car look like?
Is this the "thing" you're referring to?
I blew up the image and I still can't tell what it is
Maybe somebody else will recognize it.
manicmechanic007
5 Year Member
Your 1984 Mustang, if a V8, was a HO with a 600 Holley on it
So, the fuel filter was a FG 795 at the carburetor inlet
Better get some lines off a newer Mustang and put a FG 800 on it
So, the fuel filter was a FG 795 at the carburetor inlet
Better get some lines off a newer Mustang and put a FG 800 on it
85GTStangGuy
Advanced Member
That engine and harness are all out of an 87+. I mean... I've seen swaps before the the A/C and smog too?
Looks like the A/C wasn't swapped to me.... those refrigerant lines are from a carb'ed Fox, not an EFI Fox. Same with the alternator.
He's got the same 2G I've got in my 86 so... Looked legit to me.
Tensioner, AC clutch and lines are all pre-86 style for sure.
Someone EFI swapped that '84. That's a
ton of cobwebs. The thing mounted to the fuel rail on the backside is the fuel pressure regulator.
IIRC, in 1984 the fuel filter was in the engine bay. With that being an EFI swap, i would bet $1 it does not have a fuel filter at all. I bet they removed all the carb fuel lines and just plumbed in the EFI stuff and there's no filter.
I can see the lines in the photo on the rail but don't see any fuel filter in that pic. You'll have to just dig around a bit. If there is no filter, i wouuld pull the fuel rain off and make sure that's all clear of rusty fuel otherwise those injectors will clog quickly, if they aren't already.
Someone EFI swapped that '84. That's a
ton of cobwebs. The thing mounted to the fuel rail on the backside is the fuel pressure regulator.IIRC, in 1984 the fuel filter was in the engine bay. With that being an EFI swap, i would bet $1 it does not have a fuel filter at all. I bet they removed all the carb fuel lines and just plumbed in the EFI stuff and there's no filter.
I can see the lines in the photo on the rail but don't see any fuel filter in that pic. You'll have to just dig around a bit. If there is no filter, i wouuld pull the fuel rain off and make sure that's all clear of rusty fuel otherwise those injectors will clog quickly, if they aren't already.
85GTStangGuy
Advanced Member
That's correct. It was actually at the carb itself.... that little bronze filter where the fuel line goes into the carb.
They (the swapper) would have had to change the fuel tank and pump also, right? And revise the fuel lines. While they were back there doing all that, woulda thought they may have added a filter there too. Apparently not!
85GTStangGuy
Advanced Member
I would say that the engine and accessory package on the front of the motor are all 1984.
Most likely its just an injection swap. The fuel pump could be an external but most were in tank. They simply may have not installed a fuel filter but it does need one. Also, if the car was a CFI car would it not have had a lift pump in the tank and then the fuel filter and external high pressure pump on the passenger side frame rail at the back of the car? This is how my '83 T-Bird was but I did not know if that design carried over to the Mustangs.
And forgive my late response as the five posts above mine were added while I was distracted with work...
Most likely its just an injection swap. The fuel pump could be an external but most were in tank. They simply may have not installed a fuel filter but it does need one. Also, if the car was a CFI car would it not have had a lift pump in the tank and then the fuel filter and external high pressure pump on the passenger side frame rail at the back of the car? This is how my '83 T-Bird was but I did not know if that design carried over to the Mustangs.
And forgive my late response as the five posts above mine were added while I was distracted with work...
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manicmechanic007
5 Year Member
That is what I was thinking
I doubt there is a fuel filter, and they are relying on the sock in the tank (if they ever got it running)
I doubt there is a fuel filter, and they are relying on the sock in the tank (if they ever got it running)
I wonder what distributor is in there... 
Salt and Pepper shakers? EEC?
Maybe somebody threw parts at it because they wanted the Cobra intake.
I'm wondering the same.
Salt and Pepper shakers? EEC?
Maybe somebody threw parts at it because they wanted the Cobra intake.
I'm wondering the same.
manicmechanic007
5 Year Member
You guys may know, stock, those carbureted HO's would outrun the fuelies
Used to drive those cop cars around and the Highway Patrol interceptors (doing alignments and checking for vibrations at high speed etc.)
The carb'd ones would do 85mph in second gear
The fuelies would only do 72mph (rev limited)
Used to drive those cop cars around and the Highway Patrol interceptors (doing alignments and checking for vibrations at high speed etc.)
The carb'd ones would do 85mph in second gear
The fuelies would only do 72mph (rev limited)
manicmechanic007
5 Year Member
Sure, is nice that it has AC
Those old systems that bolt together are better IMO
I'll provide the R12
Those old systems that bolt together are better IMO
I'll provide the R12
85GTStangGuy
Advanced Member
Looks like they swapped out the radiator shroud and coolant bottle to a later one, in order to move the battery to the driver's side.... in order to make room for the air filter on the passenger side.
And aren't those EFI valve covers?
Is that Cobra intake the one that is semi-valuable to you EFI guys?
Like @manicmechanic007 and @Noobz347 said, wondering if it ever ran?
And aren't those EFI valve covers?
Is that Cobra intake the one that is semi-valuable to you EFI guys?
Like @manicmechanic007 and @Noobz347 said, wondering if it ever ran?
85GTStangGuy
Advanced Member
Bolt together?? Please elaborate. Is that versus spring lock connections or something?
I believe the valve covers are the stock 84 units when looking at the engine bay I posted a picture of?
manicmechanic007
5 Year Member
Yes, VS the spring locks
The lines bolt to the compressor and the evaporator
The older bolt together stuff never ever leaked as much at the high side condenser connectors or the high side evap connector
Even with just one o ring, the bolt together design smashes the o ring and they do not leak for 10 years
The lines bolt to the compressor and the evaporator
The older bolt together stuff never ever leaked as much at the high side condenser connectors or the high side evap connector
Even with just one o ring, the bolt together design smashes the o ring and they do not leak for 10 years
85GTStangGuy
Advanced Member
The passenger side valve cover with the tall oil-fill standpipe was not put on the 5.0 engines until 1986. Prior to that, oil filling was done at the front of the driver's side valve cover, where the pcv valve is.
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