Ford 332T injectors

[John T]

Is there a rubber seal under the injectors?

I am getting a small leak at at least 1 injector.... the nut on the lines are tight and the bleed back hose on top doesn't seem to be leaking...
Haven't pulled one out yet....

ford/new holland

 

[whitetiger]

Is there a rubber seal under the injectors?

I am getting a small leak at at least 1 injector.... the nut on the lines are tight and the bleed back hose on top doesn't seem to be leaking...
Haven't pulled one out yet....

ford/new holland

The lower seal is a copper washer between the injector and the cylinder head. Most Ford engines have a rubber dust seal at the top, it has nothing to do with sealing fuel.
Rarely does fuel leak past the copper seal in the head. It is not uncommon for the injector to leak from the copper cap washer or the fuel return line seals on top.

 

[Russell King]

Is there a rubber seal under the injectors?

I am getting a small leak at at least 1 injector.... the nut on the lines are tight and the bleed back hose on top doesn't seem to be leaking...
Haven't pulled one out yet....

ford/new holland

Do you mean you have bubbles coming out of the combustion chamber in a pool of fuel or fuel leaking out of lines and making a pool of fuel?

I think the above post covers both but I am just wondering what is leaking.

 

[John T]

The lower seal is a copper washer between the injector and the cylinder head. Most Ford engines have a rubber dust seal at the top, it has nothing to do with sealing fuel.
Rarely does fuel leak past the copper seal in the head. It is not uncommon for the injector to leak from the copper cap washer or the fuel return line seals on top.

ok it does look like there is a rubber type seal when looking at it.

I took off the return lines for inspection.... they look fine

the "lower" copper washer....

do I remove the 2 mounting bolts and remove the injector?

because it also looks like there is a copper washer under the center fixture that the return lines bolt into.

 

[John T]

I just pulled one of the injectors out...
looks like there is a copper washer way down the bottom....

But up top it looks like a rubber gasket..... I suspect this is whats leaking.

this does not look like strictly a dust seal....

 

[John T]

but I am just wondering what is leaking.

diesel is accumulating under and around the injectors...

not sure where it's coming from.

I suspect that black rubber gasket.

 

[John T]

actually on further inspection... It looks like a cork gasket

 

[Russell King]

I am with @whitetiger that the black rubber seal is no where near a fuel source, but it will not hurt anything to replace it.

Since you have the injectors out, you can replace all of the copper washers with new ones. I would also replace the rubber hoses and clamps (if there are clamps on the rubber hoses?). That way you will be eliminating more leakage points.

I think it is leaking around one of the return hose banjo bolt connections.

But you are a lot closer to the problem than I am.

 

[John T]

The lower seal is a copper washer between the injector and the cylinder head. Most Ford engines have a rubber dust seal at the top, it has nothing to do with sealing fuel.
Rarely does fuel leak past the copper seal in the head. It is not uncommon for the injector to leak from the copper cap washer or the fuel return line seals on top.

OK

after looking at everything I now understand what your saying...

that rubber /cork gasket on top is indeed a dust gasket..

my lower copper gasket really doesn't look good.... also I see a lot a crap in the hole when I pulled the injector.... maybe a combination of bad top "dust" gasket and a bad bottom copper gasket...

 

[John T]

I am with @whitetiger that the black rubber seal is no where near a fuel source, but it will not hurt anything to replace it.

Since you have the injectors out, you can replace all of the copper washers with new ones. I would also replace the rubber hoses and clamps (if there are clamps on the rubber hoses?). That way you will be eliminating more leakage points.

I think it is leaking around one of the return hose banjo bolt connections.

But you are a lot closer to the problem than I am.

thank russ.

copper bottom washers for sure.... and new top dust washers....

I will go from there.... only because the return lines "look" good.

 

[Russell King]

I was looking at your pictures a little more and may have a different idea of what could be leaking. I know nothing about the injectors on your tractor and really don’t know that much about injectors in general so I am purely guessing on this…

The top of the injector is that big cast iron piece with a hole in it. The fuel return line is connected to that top “nut” that is down in a hole of the cast iron part. So that is making me think there is some sort of conn between the cast part and the injector body. I have no idea on how they are assembled or if that top hex is screwed into the body but it could be leak from there??

I searched on line but couldn’t find out much info about them - but they are expensive ($210 each). I think there were later versions that were only $75 each.

This picture looks like yours and there is some sort of cork gasket on it…

Good luck and be careful with them!

 

[John T]

The top of the injector is that big cast iron piece with a hole in it. The fuel return line is connected to that top “nut” that is down in a hole of the cast iron part. So that is making me think there is some sort of conn between the cast part and the injector body. I have no idea on how they are assembled or if that top hex is screwed into the body but it could be leak from there?

It looks like a copper washer under that nut fitting for the return line.
funny, the parts diagram I have doesn't show it that way...

it also shows a seal & copper washer at the bottom...... I'm not seeing a seal... unless it's hidden under the washer.

 

[John T]

I'm gonna try to search for parts #'s today... yes, I'd love to replace the return lines.... if I knew exactly what size the hose is. they are probably stock 1999

also gonna try to plug the bottom hole and clean out the bores...... they are pretty nasty...

after it's cleaned up I'll put it all back together so I can at least move the machine.. while I'm waiting for parts.

It's a small niggling leak and makes a mess on top of the engine.

the engine runs fine so I'd rather not buy new or rebuilt injectors... copper washers and dust seals/hose hopefully will do the trick.

Thanks for the input.

 

[John T]

 

[John T]

making headway.....
ordered some 3/16" ID Tygon hose and an injector seal kit....

still need to find the proper size copper washer for under the return line NUT.

 

[John T]

that center bolt has a hex key in the center....... I'm hoping I can remove it and get the copper washer out to measure it.....

 

[whitetiger]

that center bolt has a hex key in the center....... I'm hoping I can remove it and get the copper washer out to measure it.....

If you turn that sleeve, it changes the pop of pressure of the injector. Bad move!!
The injector you have is not the same as the one your parts picture shows.

 

[hedgerow]

I would take those injectors to a diesel injection pump repair shop and have them tested for pop off pressure and spray pattern and they will have the parts you need to repair your leaks. If that hex screw got moved at all your pop off pressure is not correct now.

 

[John T]

I didn't realize that about the pressure. However, I counted the half turns when I took them out. ( old habit from working on motorcycle carbs) 3-1/2 turns on 2 and 4 turns on the last one.

 

[John T]

The injector you have is not the same as the one your parts picture shows.

I see that.


There is a non emissionized and an emissionized engine and related parts.
332T vs 332T/JF

there also might be a difference in years... as far as what injectors they used..... not sure.