All Small Six Mustang is eating fuel pumps
- Thread starter jonathon.t.mcmahon@gmail.
- Start date
This relates to all small sixes
frozenrabbit
Well-known member
Any pics of a chewed up arm?
Unrelated, I replaced brushes in the alternator on my daily Ranger. CHEAP-O China junk. What ever the material was, it certainly was not carbon. They ate through the armature, and had absolutely no wear on the 'brushes'.
Quality of aftermarket is just garbage.
Unrelated, I replaced brushes in the alternator on my daily Ranger. CHEAP-O China junk. What ever the material was, it certainly was not carbon. They ate through the armature, and had absolutely no wear on the 'brushes'.
Quality of aftermarket is just garbage.
It's interesting that you say this because the I6 pumps do install "upside down" compared to the similar pump on the V8. Maybe you are not putting them in correctly? Photo is of my 250 but the 200 is the same.
jonathon.t.mcmahon@gmail.
New member
Orientation is correct. Ignore the rubber line to the carb, that was a roadside execution.
jonathon.t.mcmahon@gmail.
New member
A bit difficult to see but the arm has this extention or pad on it that breaks. The arm itself is totally limp (vs a new one that takes pressure to move)
frozenrabbit
Well-known member
The contact pad and arm is not chewed up/broken in your photo. Can see there is something broken internally from angle of the arm.
I just pulled the pump on a 100% running when pulled 200 from a '70 Maverick I recently picked up. The pump doesn't have a brand name on it anywhere, not the original, maybe replaced in the '90's or early 2000's. Known the previous owner since the 70's. Some numbers on the pump, but no internet matches.
Only 1 rivet, tip is just notched to keep pad aligned. Wear mark on pad where it rides the cam lobe, slight arch to pad so it really only contacts the cam in the center of the pad. Arm tip is 2-1/8" from mount surface. Very much still under internal spring load.
Honestly not sure why you are going through them. Looking inside the block at the lobe, just looks like a lifter lobe, maybe just a little taller or shorter. You would be able to see any lobe damage without tear down of the block.
I'd say just internal pump failure, but 4 for 4 is horrible.
I'd take a grinder to the broken pump and de-cap it, just to see what's broken inside.
I just pulled the pump on a 100% running when pulled 200 from a '70 Maverick I recently picked up. The pump doesn't have a brand name on it anywhere, not the original, maybe replaced in the '90's or early 2000's. Known the previous owner since the 70's. Some numbers on the pump, but no internet matches.
Only 1 rivet, tip is just notched to keep pad aligned. Wear mark on pad where it rides the cam lobe, slight arch to pad so it really only contacts the cam in the center of the pad. Arm tip is 2-1/8" from mount surface. Very much still under internal spring load.
Honestly not sure why you are going through them. Looking inside the block at the lobe, just looks like a lifter lobe, maybe just a little taller or shorter. You would be able to see any lobe damage without tear down of the block.
I'd say just internal pump failure, but 4 for 4 is horrible.
I'd take a grinder to the broken pump and de-cap it, just to see what's broken inside.
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When comparing the two photos, the one that @jonathon.t.mcmahon@gmail. posted looks like the arm part that is broken is substantially longer than the one @frozenrabbit posted. I know it sounds like a dumb question, but are you sure that you are getting the correct pump for your engine? The photos are at different angles so it’ hard to tell but in Frozen’s photo, the tongue that is riveted on, extends just a tiny bit in length and the angle of the lever looks different. Probably just a difference in angle though.
frozenrabbit
Well-known member
Yes- NOS
- or go electric.frozenrabbit
Well-known member
That's something not from the pump. If the tip came off, it would be in the pan.
jonathon.t.mcmahon@gmail.
New member
You've got me wondering is the damage metal is happening after the arm's internal is failing.
I don't know. Still does not make total sense.
jonathon.t.mcmahon@gmail.
New member
I have 2 NOS items coming.
Newer than yours as they don't have the screws but do have the spring on the arm that the moden ones don't have.
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frozenrabbit
Well-known member
The one on my 200 doesn't have that external spring, all internal. Never pulled one with that external spring, but never pulled one that is assembled with screws like that. A 144, a 170, 2 200s, and a 250. With and without canister filter.
There is nothing broken off the tip of your pump arm.
OP can you take a pic of the pump like in post 26 or 37 Please.
TrickSix
Famous Member
https://www.ebay.com/itm/3523781853...uid=yPAA4oA3Qxu&widget_ver=artemis&media=COPY
https://www.ebay.com/itm/1245351572...uid=yPAA4oA3Qxu&widget_ver=artemis&media=COPY
Here's a couple, there may be more I didn't look very hard. These are kinda crusty looking though. If you can be patient, a nice looking one comes along once in a while.
https://www.ebay.com/itm/1245351572...uid=yPAA4oA3Qxu&widget_ver=artemis&media=COPY
Here's a couple, there may be more I didn't look very hard. These are kinda crusty looking though. If you can be patient, a nice looking one comes along once in a while.
Also @jonathon.t.mcmahon@gmail. can you take a photo like #31? I can't see from your earlier photos but I wonder if the angle of the arm on yours is wrong.
