Oily fuel pump
- Thread starter rgentry
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If the gasket is leaking then you probably just need a gasket. If the weep hole is leaking, you need a pump.
Unless the oil smells like gasoline, or you feel there is a fuel delivery problem at the carb, I'd suggest just getting the gasket. Or, did you try just tightening the bolts against the engine? As best as I can tell, if you had an internal leak, you'd be having a much bigger problem running your engine, in addition to a few drops of oil.
Fortunately, changing out a fuel pump is a
job, so if there's more than just a leak at the engine boundary, you can replace the pump later if you have to.
Don't forget to throw some permatex on both sides of the gasket when you do it!
Fortunately, changing out a fuel pump is a
job, so if there's more than just a leak at the engine boundary, you can replace the pump later if you have to. Don't forget to throw some permatex on both sides of the gasket when you do it!
What's this "weep hole" thing, Gumby? I'm not seeing it labeled in the mechanical drawings from the Engine Manual. ???
little hole in the bottom of fuel pump, when the diaphram gets a hole/crack in it, fuel comes out the weep hole.....drip drip drip........
I think the point of the weep hole is so the fuel doesn't get into the oil if leaking internaly.....not sure just guessing.
older FP's are rebuildible, latter(79+ I think) are not, just get a new one
I think the point of the weep hole is so the fuel doesn't get into the oil if leaking internaly.....not sure just guessing.
older FP's are rebuildible, latter(79+ I think) are not, just get a new one
So the weep hole would drip gas, not oil?
[quote author=IDave link=board=1;threadid=8194;start=msg69332#msg69332 date=1070211219]
So the weep hole would drip gas, not oil?
[/quote]
thats what mine did.
So the weep hole would drip gas, not oil?
[/quote]
thats what mine did.
Not all pumps have oil on one side of the diaphram and fuel on the other. Most have an air chamber between the two. If the oil seal is leaking, oil will get into the air chamber and cause problems. A weep hole will tell you if the oil seal is leaking before you have problems much like the weep hole on a water pump.
Having said that, I haven't seen a 2F fuel pump in some time and I don't really know if it has one or not. I just looked all over my shop for an example and the only mechanical pumps I have are sealed csb units.
Having said that, I haven't seen a 2F fuel pump in some time and I don't really know if it has one or not. I just looked all over my shop for an example and the only mechanical pumps I have are sealed csb units.
theferg
SILVER Star
FWIW, I had a ginormous oil leak problem a bit over two years ago. It was leaking so bad that I could see the oil kicking back up and getting all over my rear window on my FJ60... I couldn't figure out where it all was coming from so I took it to the stealership 
and they said they fixed it and that it was the oil pressure sending unit. Well after I got it back I was cruisin' up the freeway headin' home and low and behold, same thing with oil gettin' on the back window. I hurried and opened the hood and this time I could see oil just squirting out the underside of my fuel pump. Replaced the fuel pump and no more oil leak.
-Ferg-
and they said they fixed it and that it was the oil pressure sending unit. Well after I got it back I was cruisin' up the freeway headin' home and low and behold, same thing with oil gettin' on the back window. I hurried and opened the hood and this time I could see oil just squirting out the underside of my fuel pump. Replaced the fuel pump and no more oil leak.-Ferg-
How did they think a leaky oil pressure sending unit could get oil on the rear window of your 60? 
BTW, I believe rgentry has a 1F (he has a '69), and the diagram shows no air chamber, just a diaphragm between the oil and fuel.
BTW, I believe rgentry has a 1F (he has a '69), and the diagram shows no air chamber, just a diaphragm between the oil and fuel.
Not trying to be an ass or anything, but it looks to me like Q is an oil seal and the space between F and Q is supposed to be dry. The pic is from the F engine FSM.
Sorry, Gumby, if I am coming across as being argumentative. Don't mean it that way at all! Just trying to understand. I was looking at a different schematic, and I'll scan it in a little later. I see what you mean from that drawing. 
So this is what I was looking at. I assumed all of the black area was liquid filled, but, as Gumby points out, there is an oil seal, so the middle black area is an air pocket. My bad :-[
[quote author=IDave link=board=1;threadid=8194;start=msg69389#msg69389 date=1070227367]
Sorry, Gumby, if I am coming across as being argumentative. Don't mean it that way at all! Just trying to understand. I was looking at a different schematic, and I'll scan it in a little later. I see what you mean from that drawing.
[/quote]
Didn't take it as argumentative at all. i was just making sure you didn't think i was either.
Sorry, Gumby, if I am coming across as being argumentative. Don't mean it that way at all! Just trying to understand. I was looking at a different schematic, and I'll scan it in a little later. I see what you mean from that drawing.
[/quote]
Didn't take it as argumentative at all. i was just making sure you didn't think i was either.
