L3300 new fuel pump, won't start

[Streetmedik]

Have a L3300. It quit running. Found the fuel,pump was not pumping. Got a new pump today, installed it. Tractor turns over, but won't start. I am new to diesels. Where do I go from here. Really need the tractor working.


And, yes, there is fuel in the tank. Also replaced the fuel filter..

 

[85Hokie]

Have a L3300. It quit running. Found the fuel,pump was not pumping. Got a new pump today, installed it. Tractor turns over, but won't start. I am new to diesels. Where do I go from here. Really need the tractor working.

And, yes, there is fuel in the tank. Also replaced the fuel filter..

Fuel in the tank ....mmmmm.....IS fuel getting TO the pump? When you changed the filter.... did it not come out in a nice stream or barely at all?

You have a restriction problem in the line or tank - take the line off - see if fuel comes out in a good stream....

Have you bleed the entire fuel system?

 

[Streetmedik]

New pump puts out fuel at a good rate. So, no obstruction from tank to pump.

I opened the bleed valve and cranked the engine. The owners manual says run the engine.... Hard to do when it won't start.

I also tried loosening the nut at the injectors and cranked the engine. Got fuel there also.

 

[D2Cat]

Streetmedik, sounds like you're doing all the right stuff! I'd think maybe there is still some air in the lines, so try loosening the nuts at the injectors and turn the engine over some more. As one squirts some fuel, shut it, then the next, etc.

Have the throttle wide open. Only use the starter in 15 seconds burst with some rest between tries to keep starter cool.

 

[Streetmedik]

I'll try that tomorrow . In the meantime, keep the suggestion coming.

 

[RCW]

In the meantime, keep the suggestion coming.

My suggestion is easy --- go by Hokie and Cat's recommendations. They have forgotten more about Kubota tractors than I know. There's a great deal of expertise among the OTT group.

They are steering you in the right direction. Fixing a problem always starts by ruling out the obvious/typical. Both of those guys are great at taking a methodical approach to an issue.

Best of luck!!

 

[Tooljunkie]

Likely you just havent bled enough to get air out. I remember an old cable dragline, running the pup motor,decompressor and bleed every injector and then release decompressor, snortin white smoke and banging away til it fires up.
Bled them every morning.

 

[lugbolt]

Careful cracking injector tube fittings loose. It's easy to let the injector itself turn; which can cause other problems. Hold the nozzles with a wrench and loosen the lines with another wrench, so that nothing but the fitting turns.

You wouldn't believe how many times I've seen tractors in the shop, with loose nozzles (leaking compression, damaged, etc) and loose delivery valves leaking and poor running.

 

[Streetmedik]

Looking through parts diagrams, I see a gadget called "stop solenoid ". I am wondering, how it functions.... And if it is malfunctioning or out of adjustment... Could it cause the same problems?

 

[North Idaho Wolfman]

Yes the fuel stop solenoid will keep it from starting if it's not working properly, but you said you had fuel coming out of the lines to the injectors, so most likely it is working properly.

If you want to 100% make sure that is not your issue remove it, and then try to start it, if it starts you will have to manual stop the engine with the stop lever on top of the gear case in front of the injection pump, and if all else fails crimp the fuel line and it will die in a few seconds or so.

I sent you a PM with a link to download the WSM, way more helpful than just a parts diagram for knowing what the parts are, and how to test them.

 

[Streetmedik]

Thank you very much

 

[Streetmedik]

I recorded a video of tryi g to start the tractor... But, I don't know how to put it in here.


Getting fuel at all three injectors. Engine cranks, get some darkish, diesel smelling smoke.. But,does not start running.

 

[RCW]

You're getting closer if there's smoke!

As Wolfman said, fuel at the injectors rules out the stop solenoid. That's good news too.

Did you have any air bubbles when bleeding the lines? Was all the air/bubbles purged when you stopped bleeding the lines?

Lines snugged back to injectors, and you were careful not turn injector while loosening the lines, as lugbolt pointed out?

It was still smoking when you stopped?

Did you heat the glow plugs prior to cranking it?

Be careful you don't burn up the starter cranking it.

Not really helpful of me - just trying to recap some of the obvious stuff.

 

[Tooljunkie]

Glow plugs working? Accessory hydraulics on and loading engine? Three point in midway position? Battery fully charged? There are all kinds of things that could be causing this.

 

[RCW]

Another thought - is the air filter on it - and is it clean? Honestly, I make take it off for now......

Good idea on the hydraulics, Frank. Didn't think of that....

 

[Streetmedik]

Air filter is clean. But, also tried without it.

3 point is down... Can't raise it without the engine running.

The glow plugs are getting 12v. I don't know if they are glowing. Don't know how to tell.

Fuel flow was without bubbles... But, I can try bleeding them more.

Battery was fully charged plus hooked up jumper cables from my forklift.

No hydraulic engaged.


Only smokes while cranking.

 

[RCW]

Only smokes while cranking.

Yeah - I didn't phrase that well, sorry.

Does it smoke the whole time it's cranking, or does the smoke stop toward the end of the cranking cycle? Just wondering if it goes lean on fuel after a few seconds.....

As far as glow plugs, look here:

http://www.orangetractortalks.com/forums/showthread.php?t=28495&highlight=glow+plug+test

Did it start reliably/quickly in the cold before the lift pump went? You don't want to go on a wild goose chase with GP's, but might be worth ruling out...

If it always started good, I'm still leaning toward air in the lines, but I'm not the expert some of the guys here are.

 

[85Hokie]

Rcw is sending you on a good path for double checking the problem that could be at the glow plugs.

Since you are jumping it - I wonder if the engine is spinning fast enough, then again jumping with a "good" battery to begin with would indicate that you are spinning it fast enough.

If you got smoke - you got some fuel ending up in the cylinder!

Test each glow plug, see if you have a problem there - we just had a post that everything seemed fine - but found out that the belt on a MMM was slowing down the engine jussssst enough to not start.

report back - we all want to hear/see that ol' girl running!

 

[Streetmedik]

Smokes when the whole time cranking... However was more smoke initially... By time I gave up today, just a light amount of smoke.

I will check the ohms on the glow plugs Monday... Or this weekend if I get real ambitious.

 

[85Hokie]

Smokes when the whole time cranking... However was more smoke initially... By time I gave up today, just a light amount of smoke.

I will check the ohms on the glow plugs Monday... Or this weekend if I get real ambitious.

Whipping the tractors a$$ will make you feel better all weekend when it purrs!!!

then again, messing with it and NOT getting it to run.....might make you push it off the cliff!

you'll get it running again - betcha an ice cold beer!