Fuel injectors leaking?

bc

Well-known Member
Been dealing with my hard starting Ford 1500 and have been considering cleaning the injectors. Cleaned the surface around the injectors and some gunk around the base of each. After cranking for 90 seconds to get it started I noticed smoke around the injectors. Next time I watched and found fuel around the base. Plan to pull and clean them but wonder if I need to buy any parts first and how to seal the leak. Thanks


mvphoto69122.jpg
 
(quoted from post at 08:10:29 01/30/21)Plan to pull and clean them but wonder if I need to buy any parts first and how to seal the leak

If it's anything more than the injector line to the injector that's leaking, or the sealing washer at the bottom, it's off to the injection shop for cleaning and rebuilding.

May be just me, but keeping the inside of these clean once opened up is a tuff thing.
 

I looked and don't see any seal kits for the ford 1500. Thought I saw some new injectors online for about 40 or 50 bux each but can't find them now. Guess I'll call the local diesel shop tomorrow.
 

I don't know if there is a height setting but I screwed in the holder on the right one. It was loose and screwed in easy so I went till it was tite. The rest of the injector stayed and unscrewed from the holder. Loosened the nut on the fuel line and then screwed the injector in 2 1/2 turns until it was tite. Had to find a another piece of hose as that put the hose fitting sticking off to the right instead of to the left. Cranked on it to bleed the line and tighten the fuel line nut. Started in 60 seconds and ran ok, about the same as before. I don't know why the holders are screwed out about 2.5 turns and if that has any affect on the operation or not. Any ideas?
 

Update. Pulled the injectors out yesterday. Taking them to a diesel shop this morning. Quoted me about 60 bux apiece to clean plus more if tips are needed.


mvphoto69228.jpg


mvphoto69229.jpg
 
I've never seen injectors like that, but that ragged edge sure doesn't look right.
I've got a Shibaura 3 cyl engine with over 3000 hours on it, no problems.
 
(quoted from post at 21:07:48 01/31/21)
I don't know if there is a height setting but I screwed in the holder on the right one. It was loose and screwed in easy so I went till it was tite

Never saw them loosen up themselves like that. Weird, but guaranteed to have trash in there.


Update. Pulled the injectors out yesterday. Taking them to a diesel shop this morning. Quoted me about 60 bux apiece to clean plus more if tips are needed

Good move. Price sounds about right.
Typically a good cleaning and reset pressures makes them like new again.
 
Can't edit my last post.

Somebody tried to remove the injector at some point and unscrewed the top half.
 

Update. Got my two injectors back from the shop. $276. 70 bux labor for each one. 25 bux each for the nozzles. 20 bux each for the used nuts. 10 bux for a shim kit. 30 bux for special part freight, supplies, and new return hose.

It was hard starting, always put out white smoke even after running an hour, and some wet stacking where there was black liquid gunk showing up on the exhaust flapper. Plus it would throw out some wet particles that land everywhere and leave a stain when wiped off.

Was told that white smoke and the wet stacking and the little particles is an indication incomplete combustion of the fuel. The seals were ate up and disintegrated under the nut. That allowed combustion to leak by the nut and fuel would appear there when trying to start it. The leaking combustion ate up the bottom of the nut as shown in the picture. One nozzle was cracked at the bottom and neither one would spray right. They tried to clean them up but ended up replacing them and the tips inside.

They use a Zep brand cleaning fluid for 65 bux for 5 gallons that they have found works best for cleaning off old paint and carbon. They still had some original paint on them so we figured they were the original 42 year old injectors.

They recommended get some wire brushes to put in a drill to clean up the threads in the block to get the carbon out so it doesn't do it again. Those were 7 bux each as I also got one for the glow plug holes which had a lot of carbon in it. First used a pick and magnet to clean out the threads. The seal pieces came out with the magnet. Used a little ignition file to clean out some carbon then wire brushed them real good and blew them out. One hole had a little groove wore in it but they said if the new seal covers it then it should be ok. They recommended vacuuming out the holes before install or at least crank it over some to blow out any carbon particles in the cylinders.

Also recommended anti-seize on the threads. Put in the new seals and torqued down the nuts to 40 lbs. using the arm strong torque end wrench since my 1 1/16 or 27mm deep sockets weren't deep enough. They had the nozzles torqued in just right so you can't use them to screw in the bottom nut. With new seals the nuts end up being up a few threads above the head. Since that one side had a disintegrated seal, that is why I could screw it on down as I mentioned in my post above.

So put them in, replaced fuel filter, and cranked on it hoping it would start easy without glow plugs or engine heaters at 40 degrees. Had to bleed it a second time and it ran for 5 seconds and quit and then the battery was low. Tried again yesterday at 40 plus degrees with the hose and pan heaters on all night. Glow plugs for 30 seconds and it took off after 45 seconds of cranking. Ran great with clear exhaust smoke. So I learned a lot here.

Next step is to pull the valve cover and check the valve lash since it probably hasn't been done in 42 years. Have to find the procedure. Might be a spring project but if still hard starting I could get a valve job on this little 2 cylinder ford 1500 to help with the compression. Not really wanting to do a ring job. May have to consider a bigger battery as well.

Thanks guys.
 

Well so it goes. After putting in those injectors and driving around Friday, I tried again yesterday. Didn't want to start. Looked under the hood after cranking for a while and head was covered with diesel. The injector nuts all easily turned a quarter turn. Retightened them at 18 degrees and ran the snowblower around. Guess I will have to recheck them for a while.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top