New Holland L555 with a Kubota V1902-63035 Injection Pump Issues

[Chistakoff]

So long story short I fell into a good deal on a New holland L555 with a Kubota V1902. When I bought it had fuel issues and was just bubbling out of the injection pump with the lines removed. So I figured I'd take apart the injection pump and check for debris/ contamination. I found it to be dirty and some debris on the inside. I cleaned it out and when priming the injection pump it now comes out maybe 3-4 inches nothing extreme. The engine doesn't start but wants to sometimes I can get it to rough idle with black/grey smoke for 15 seconds most times just turns over and wants to start with black smoke coming out the exhaust. The smoke is consistent and does it the whole time while cranking/idling. What I'm looking for is some possible insight on what to check and what to do to get it operating how it should? Also does anyone have a source for a full rebuild on the injection pump or a parts breakdown diagram? Any help or advice is greatly appreciated.

Some questions that might arise:
Yes, the injection pump was timed and put back correctly with the slide and timing marks.
Yes, I tried a new fuel source.
Yes, all injector lines and supply lines were blown thru.

 

[Russell King]

Oregon fuel injection is always highly recommended for pump an injector repair and replacement.

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Oregon Fuel Injection specializes in the repair of diesel fuel injection systems, replacement diesel parts, performance parts, drive-in service, repairs and diagnostics.

oregonfuelinjection.com

I would have everything rebuilt (but it is easy to spend your money)

 

[motorhead]

I would also check the valve clearances too.

 

[North Idaho Wolfman]

So long story short I fell into a good deal on a New holland L555 with a Kubota V1902. When I bought it had fuel issues and was just bubbling out of the injection pump with the lines removed. So I figured I'd take apart the injection pump and check for debris/ contamination. I found it to be dirty and some debris on the inside. I cleaned it out and when priming the injection pump it now comes out maybe 3-4 inches nothing extreme. The engine doesn't start but wants to sometimes I can get it to rough idle with black/grey smoke for 15 seconds most times just turns over and wants to start with black smoke coming out the exhaust. The smoke is consistent and does it the whole time while cranking/idling. What I'm looking for is some possible insight on what to check and what to do to get it operating how it should? Also does anyone have a source for a full rebuild on the injection pump or a parts breakdown diagram? Any help or advice is greatly appreciated.

Some questions that might arise:
Yes, the injection pump was timed and put back correctly with the slide and timing marks.
Yes, I tried a new fuel source.
Yes, all injector lines and supply lines were blown thru.

You ready for a lot of info?

First if your getting 3 to 4 inch fountains out of the injection pump your fine and dandy.

That engine along with it's little brother the V1702 ( used in the bobcat 743 ) were problem children.
They are IDI engines that were always hard to start from the very beginning and only got worse with age.
The real fix is to rip that engine out and replace it with a 2203DI!
Makes it a completely different unit at that point.
And surprisingly it's pretty much a direct bolt in.

They were prone to overheating and damage from overheating.
Which in turn made them really hard to start.

Now to try and get you going.
Do a compression test, if that fails you have no choice other than to rebuild or replace.
If that passes, Either have the injectors tested or do a simple test.
Install an Injection line off to the side of the engine off the injection pump, install a injector loosely so you can bleed the line. Once you bleed the air out snug the injector.
Do Not put your hand under the injector, crank it and you should get a fine mist with no drips or dribbles.
Test them all.
If they all pop then move on to testing the glow plugs, They must work in order to start this engine.
Glow plugs need to be heated for about 30 seconds before cranking and heated while cranking.
If that all work out it should fire.
DO NOT use ether EVER, and if you have already, it will probably never start or run, and should have failed a compression test.
If it's still being a pill use a heat gun or a hair dryer on the input from the air cleaner.
Heating the incoming air might give it just enough to fire.

 

[Chistakoff]

You ready for a lot of info?

First if your getting 3 to 4 inch fountains out of the injection pump your fine and dandy.

That engine along with it's little brother the V1702 ( used in the bobcat 743 ) were problem children.
They are IDI engines that were always hard to start from the very beginning and only got worse with age.
The real fix is to rip that engine out and replace it with a 2203DI!
Makes it a completely different unit at that point.
And surprisingly it's pretty much a direct bolt in.

They were prone to overheating and damage from overheating.
Which in turn made them really hard to start.

Now to try and get you going.
Do a compression test, if that fails you have no choice other than to rebuild or replace.
If that passes, Either have the injectors tested or do a simple test.
Install an Injection line off to the side of the engine off the injection pump, install a injector loosely so you can bleed the line. Once you bleed the air out snug the injector.
Do Not put your hand under the injector, crank it and you should get a fine mist with no drips or dribbles.
Test them all.
If they all pop then move on to testing the glow plugs, They must work in order to start this engine.
Glow plugs need to be heated for about 30 seconds before cranking and heated while cranking.
If that all work out it should fire.
DO NOT use ether EVER, and if you have already, it will probably never start or run, and should have failed a compression test.
If it's still being a pill use a heat gun or a hair dryer on the input from the air cleaner.
Heating the incoming air might give it just enough to fire.

I'll have to get closer to it sometime this weekend as I'm not sure if I'll have time during the week. I'll follow up with my findings long story short it went from running smooth til the next day running and then running to what it is now.

Thanks all for the information!