nash 85xl fuel problems

[spin cycle]

having owned/run these for 40 yrs i thought i knew all their little wrinkles.....but no ......so once again i must plead my ignorance (shame) on this forum

my nash has no fuel pump......it has a priming pump....and an injector pump......does the latter draw the fuel

 

[livestock 1]

What’s the problem?

 

[livestock 1]

It has a fuel pump

 

[spin cycle]

What’s the problem?

so.....tractor cut out on me so suspecting blocked tank gauze i took pipe off and blew down it...bubbling.......primed her back up with hand primer.....got good fuel thru......she started ......but then died after a couple of minutes....repeat.....same thing

now i've just had exact same problem on my case cs....changed fuel pump and away we went......but i can't seem to find any sign of a fuel pump on this 885xl and there's no mention of one in the workshop manual

the hand primer pump does leak when i've built up pressure so going to change that but i'm confused as to how she draws fuel

 

[livestock 1]

so.....tractor cut out on me so suspecting blocked tank gauze i took pipe off and blew down it...bubbling.......primed her back up with hand primer.....got good fuel thru......she started ......but then died after a couple of minutes....repeat.....same thing

now i've just had exact same problem on my case cs....changed fuel pump and away we went......but i can't seem to find any sign of a fuel pump on this 885xl and there's no mention of one in the workshop manual

the hand primer pump does leak when i've built up pressure so going to change that but i'm confused as to how she draws fuel

I had a problem with an 895 last year the thing kept stopping the primer was sucked in it was the 2 gauzes under the tank that were full of shyt

 

[livestock 1]

 

[Wood field]

Had this on a 1494 , lift pump diaphragm had a tiny pin hole
Again similar on an old transit , it wouldn’t pump fuel . Finally traced it to a hole in the plastic fuel return line

 

[livestock 1]

No 24 x 2

 

[livestock 1]

Had this on a 1494 , lift pump diaphragm had a tiny pin hole
Again similar on an old transit , it wouldn’t pump fuel . Finally traced it to a hole in the plastic fuel return line

Those plastic pipes that turn hard

 

[Wood field]

Those plastic pipes that turn hard

Yes that’s them , fortunately at the time we used a lot of push fittings ( legris fittings)
An 8 mm push fit connector got me going

 

[livestock 1]

so.....tractor cut out on me so suspecting blocked tank gauze i took pipe off and blew down it...bubbling.......primed her back up with hand primer.....got good fuel thru......she started ......but then died after a couple of minutes....repeat.....same thing

now i've just had exact same problem on my case cs....changed fuel pump and away we went......but i can't seem to find any sign of a fuel pump on this 885xl and there's no mention of one in the workshop manual

the hand primer pump does leak when i've built up pressure so going to change that but i'm confused as to how she draws fuel

Does the fuel pump draw the fuel and the primer just there for priming.

 

[Ladsdad]

As just said, the injector pump draws the fuel, the primer is there to prime the system after a filter change or running out of fuel. Any tiny air leak into the system on the suction side will give problems. If you fill the tank to the brim you’ll be able to bypass the primer pump if you suspect it’s leaking air

 

[Wood field]

Does the fuel pump draw the fuel and the primer just there for priming.

That’s what I thought , the priming lever is a manual lever on the lift pump

 

[spin cycle]

That’s what I thought , the priming lever is a manual lever on the lift pump

your 1494 had a separate mechanical fuel pump pushing the fuel through the filters to the injector pump.....i'd never heard of an injector pump drawing the fuel from the tank....quite unusual i'd suggest

 

[5020man]

your 1494 had a separate mechanical fuel pump pushing the fuel through the filters to the injector pump.....i'd never heard of an injector pump drawing the fuel from the tank....quite unusual i'd suggest

Ford 4000.

 

[milkloss]

I would suspect it has air ingress On a pipe/joint somewhere. Slowly builds a lump of air until it goes through the pump and dies.

could always get the grease out and grease each pipe until you've found the problem. Bit of a ball ache though.

 

[spin cycle]

I would suspect it has air ingress On a pipe/joint somewhere. Slowly builds a lump of air until it goes through the pump and dies.

could always get the grease out and grease each pipe until you've found the problem. Bit of a ball ache though.

I think the air is coming through the primer pump as it leaks when I prime it

next headache is how the feck it comes off

 

[mengeleguru]

I have had this before. More than once.
Please check the return fuel line isn't blocked up back to the tank.

If it is it creates back pressure in the fuel pump and it stops working.

Blew it out , All good

 

[zero]

your 1494 had a separate mechanical fuel pump pushing the fuel through the filters to the injector pump.....i'd never heard of an injector pump drawing the fuel from the tank....quite unusual i'd suggest

Some older Nash's with tank behind the seat didn't have a lift/prime pump. Just brimmed the tank and opened the bleed screws on the filters and injector pump.
Could be water/condensation or diesel bug if two tractors have similar problems.

 

[Ladsdad]

No lift pump on an international xl just a primer button next to the filters .