So, how many fuel filters does a 65 really need? - Ford Mustang Forum
 
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post #1 of 9 (permalink) Old 08-19-2013 Thread Starter
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So, how many fuel filters does a 65 really need?

I have noticed that some have a filter right at the carb, or at the line entering the left front fender(before the pump) or underneath the car by the frame rails or multiple locations. And of course, there is a small filter in the tank as part of the level sensor.

I have a 65 with 289 and canister fuel pump. At the moment, I have two: the filter in the tank and the canister. Is that enough? I would think(hope) so.

65 Convertible, 289 C-code
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post #2 of 9 (permalink) Old 08-19-2013
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I got a '66 289 and i had problems with it running good...didn't know what it was. Thought it the rust in fuel line was getting into the OE fuel filter...so i took it off and cut it open - it was clean as new.

I went ahead and put a Napa #3045 clear filter in (yellow part in pic) and it ran great. So, i took it back off just to see....and it ran bad again. So the extra filter went back on & its been fine since. I like the clear type cus you can get under the car with a light & see if there is any rust or dirt sitting in the bottom of it.

(BTW, no i didn't cut up the original fuel line - i bought a repro and cut it up)

I cant remember the different numbers for the OE and clear fuel filters...one is #3002 & one
is #3045. cant recall which Napa number is what tho. Think #3045 is the clear one. I could be wrong.

My extra filter is after the fuel pump. Some people put theirs before the pump. Either way, better to have it NOT on top of the intake manifold.

Ken
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"Da Blue Car"

1966 Mustang Coupe 289
Arcadian Blue 205,000 miles -

Last edited by 6T6Coupe; 08-19-2013 at 10:53 PM. Reason: more info
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post #3 of 9 (permalink) Old 08-19-2013
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you should have an inline filter between pump and carb, and another inline filter before the pump.
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post #4 of 9 (permalink) Old 08-19-2013
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I'm not familiar with the old canister filter on the pump. People put more filters on to help ensure clean gas. The Gearz TV show recommends one before the pump and one before the carb. The one on the sending unit is a screen for big chunks and is not really filter. But it can get nasty and restrict flow.

For 6T6: I don't see how your scenario would work. If the canister filter is bad or clogged adding the plastic one does not change that. Unless you cleaned out the lines and carb you would still have the junk in the system. Maybe you had a problem with the original line. The fittings get beat up over the years and radius' become kinks.
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post #5 of 9 (permalink) Old 08-20-2013 Thread Starter
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Quote:
Originally Posted by Lizer View Post
you should have an inline filter between pump and carb, and another inline filter before the pump.
So, you would recommend two more filters...one inline before my canister filter and one after? I agree with Driveway that the 'filter' on the sending unit within the tank is just a 'sock' for larger particles. Now, on the other hand, what harm would more filters cause? More chance of a leak, more cost, more restricted flow? Is it overkill? Personally, I do like the idea of one more fuel line joint to seal and have the potential of a highly flammable leak.

65 Convertible, 289 C-code
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post #6 of 9 (permalink) Old 08-20-2013
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If you have a clean tank then only the small one at the carb inlet is needed. That is all my cars ever had and all that was ever needed. The sock in the tank on the pickup tube is about as effective as its name: one of your old socks. Matter of fact, your sock might work better. Its only for large chunks. If you have a rusty fuel tank then likely no amount of filters will keep it out of the carb. You will just keep plugging filters. In that case change the tank; they are only $100.

No matter how many filters you use you will get a very fine rusty silt in your fuel bowl. It doesn't hurt much of anything and its been in every car I ever owned with a carb whether new or old.
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post #7 of 9 (permalink) Old 08-20-2013
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Quote:
Originally Posted by randal View Post
So, you would recommend two more filters...one inline before my canister filter and one after? I agree with Driveway that the 'filter' on the sending unit within the tank is just a 'sock' for larger particles. Now, on the other hand, what harm would more filters cause? More chance of a leak, more cost, more restricted flow? Is it overkill? Personally, I do like the idea of one more fuel line joint to seal and have the potential of a highly flammable leak.
No, just two filters total, as I said above. Anymore than that is overkill and you're just hacking up your fuel lines and wasting money.

The best way is to stagger the filter's particle size so the first filter has a larger filter (more microns), with the second filter being a finer filter (lower micron) so the total filtering efficiency is shared between two different filters. You don't always get the liberty of the filter manufacturer telling you the micron cut off of their filter however, and sometimes you just have to go with it.
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post #8 of 9 (permalink) Old 08-21-2013
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I have a '66 289 and it only has the one filter that threads into the carb fuel bowl inlet.

Didn't the 64 1/2 and 65 have a canister type filter integrated into the fuel pump + the screw in filter at the carb?

April '66 Meutchen Built Convertible Mustang

289 2v Auto
Wimbledon White, Dark Red Interior,A/C, Power Steering, Power Brakes
Cream Power Roof, 15" Style Steel Wheels & Electric Windows
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post #9 of 9 (permalink) Old 08-21-2013
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No, the '64 would not have had the screw-in filter at the carb. The steel fuel line was attached directly to the carb with a metal fitting. Starting around Feb '65 on the full-size Fords, and eventually all the SBFs, they went to the single, small filter at the carb and eliminated the bigger one at the pump. At that time they started using the small rubber hose to connect the fuel line to the filter.

I can't recall in 50 years of driving SBFs that I had ever had a problem caused by a fuel filter or the lack of one. Without a problem to solve I don't see a need for a better solution than the one Ford used.
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