Stalling

[[email protected]]

Hello

Need opinions on what is going on with IHB414 diesel tractor:

Starts good but 5-10 minutes driving it stalls. Fresh oil, new fuel filter, drained the fuel and replaced with new. Still stalling.

Took lid off the lift pump and it looks clean. Is there a screen in the pump that I should check ? Lots of bubbles when loosened the screw on the lid, is this normal?

Please PM ....thanks

This post was edited by [email protected] on 11/19/2023 at 12:14 pm.

 

[Patsdeere]

Have you tried it with the fuel cap off?
Maybe a vacuum on the tank.

 

[[email protected]]

Remove the fuel cap and just drive around?quote="Patsdeere"](reply to post at 13:13:57 11/19/23) [/quote]

 

[used red MN]

Yes, that is what he is suggesting. If you have not
recently changed the cap and have the normal IH fuel
cap about 2 1/2 inches tall and the vent hole(s) is open
I doubt that is your problem. Looking at the parts
diagram maybe you tractor uses a lower profile fuel
cap, if vent hole is open probably still rules it out.
When it stalls what do you have to do to restart it? If
you have to bleed air then that is your problem. It may
be being introduced in the lift pump.

 

[showcrop]

It is definitely fuel starvation. Is there a screen at the tank outlet? Rather than guess open up just before the filter and see if the fuel runs out continuously for a minute without slowing.

 

[Moonlite37]

Unfastenten return line and it may run right.If it run right, the governor ring is broken easy fix

 

[used red MN]

Moonlite, this tractor tractor has a CAV pump. I believe the broken governor ring applies to Roosamaster pumps. Enlighten me if I am not correct, I know Roosamaster pumps far better than CAV.

 

[Dieseltech]

The CAV DPA pumps don't have the same trouble that RoosaMaster/Stanadyne pumps have. Question, what brand fuel filter did you use? If NAPA/WIX, did you make the common
mistake of placing an O ring in the filter TOP OUTER groove? That's the fuel INLET on those filters and must NOT be blocked/restricted with an O ring. I've made lots of
service calls to correct that mistake.

 

[DanielW]

Long shot, but are you sure you have the
right filter? There are several filters
that fit that housing and look almost
identical, but some don't allow the flow
to be as it should. I can't remember for
sure, but I think the proper filter has
the outlet in slots closer to the rim,
while the incorrect one has outlet slots
closer to the center? I could have that
wrong. I do know that one type doesn't
work, and last time I replaced the fuel
filter in my B275 (pretty much the se
tractor) both Napa and Steiner sold me
the wrong one. Had to cross reference the
original IH number to a new Napa number
and ask Napa to give me that one, which
was different than the one their catalog
showed. The incorrect one will work, but
cause starvation issues exactly as you
described.

Apart from that, quite possibly gunk in
the tank. All these old tractors are
getting to the age where gunk that's
built up on the tank walls is starting to
strip off and partially or completely
plug up the tank outlet (or other parts
of the fuel system).

 

[[email protected]]

No we don't have to bleed it when it stalls. Just keep cranking it and eventually it will start
used red MN"](reply to post at 13:43:03 11/19/23) [/quote]

 

[[email protected]]

Its the original fuel cap quote="used red MN"](reply to post at 13:43:03 11/19/23) [/quote]

 

[[email protected]]

[Not yet but someone also mentioned that to me quote="Patsdeere"](reply to post at 13:13:57 11/19/23) [/quote]

 

[used red MN]

This older YT post shows and explains the filter issue much better. The raised ridge on the edge of the filter seals against an Oring in a groove up in the housing. A second oring is that is not needed is mistakenly laid in the outer groove on the filter and partially blocks the 4 slots fuel is supposed to flow through. The filters work fine if extra oring is not placed there.
Old YT post on filter issue

 

[[email protected]]

(quoted from post at 13:13:57 11/19/23) Have you tried it with the fuel cap off?
Maybe a vacuum on the tank.

Had it checked and seems ok

 

[[email protected]]

I think this is the next step is to investigate the tank. quote="DanielW"](reply to post at 15:36:46 11/19/23) [/quote]

 

[[email protected]]

(quoted from post at 13:43:03 11/19/23) Yes, that is what he is suggesting. If you have not
recently changed the cap and have the normal IH fuel
cap about 2 1/2 inches tall and the vent hole(s) is open
I doubt that is your problem. Looking at the parts
diagram maybe you tractor uses a lower profile fuel
cap, if vent hole is open probably still rules it out.
When it stalls what do you have to do to restart it? If
you have to bleed air then that is your problem. It may
be being introduced in the lift pump.

I'm worried it's the injector pump

 

[showcrop]

(quoted from post at 06:35:34 11/21/23)

(quoted from post at 13:43:03 11/19/23) Yes, that is what he is suggesting. If you have not
recently changed the cap and have the normal IH fuel
cap about 2 1/2 inches tall and the vent hole(s) is open
I doubt that is your problem. Looking at the parts
diagram maybe you tractor uses a lower profile fuel
cap, if vent hole is open probably still rules it out.
When it stalls what do you have to do to restart it? If
you have to bleed air then that is your problem. It may
be being introduced in the lift pump.

I'm worried it's the injector pump

Do the easy cheap things first.

 

[[email protected]]

Yes removed it temporarily and it still stalled