Black Smoke followed by sudden death?
- Thread starter Iplayfarmer
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Iplayfarmer
Super Member
john_bud said:
No such luck yet.
I'm back to getting billowing clouds of black smoke (after I changed out the injectors all I was getting was puffs of white). But, I don't have any real life yet.
I'm going to check the injection timing next and then valve clearances.
sandman2234
Super Member
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- Location
- Jacksonville, Florida
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- JD2555 and a few Allis Chalmers and now one Kubota
Here is hoping to it coming back to life!!!(and soon!)
David from jax
David from jax
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Iplayfarmer
Super Member
I've finally quit trying for the day. I had to stop before I threw a sledge hammer through the grill. I'm pretty frustrated.
I think I'm going to have to tear the whole front end out of the tractor in order to check and adjust the timing on the pump. (Hence the temptation to throw a hammer through the grill.)
I did adjust the valve clearances on the #2 cylinder. The intake was just under the requisite .014 in. and the exhaust was .021 in. The number one cylinder was all within spec.
I'm having a real hard time knowing when the injection pump is timed. I've got my wife turning the engine through the PTO with a crow bar and I can see when the bubble forms on the injection line, but I just can't see clearly enough to tell where 24 degrees is.
Sorry, I wish I had better news.
I think I'm going to have to tear the whole front end out of the tractor in order to check and adjust the timing on the pump. (Hence the temptation to throw a hammer through the grill.)
I did adjust the valve clearances on the #2 cylinder. The intake was just under the requisite .014 in. and the exhaust was .021 in. The number one cylinder was all within spec.
I'm having a real hard time knowing when the injection pump is timed. I've got my wife turning the engine through the PTO with a crow bar and I can see when the bubble forms on the injection line, but I just can't see clearly enough to tell where 24 degrees is.
Sorry, I wish I had better news.
sandman2234
Super Member
- Joined
- Dec 4, 2005
- Messages
- 6,068
- Location
- Jacksonville, Florida
- Tractor
- JD2555 and a few Allis Chalmers and now one Kubota
Keep all your hammers locked in your toolbox. The extra few seconds it takes to find the keys and reach for a hammer might be enough to allow you to cool down so you can resist applying the hammer treatment.
Hang in their, it will start when it gets durn good and ready!
David from jax
Hang in their, it will start when it gets durn good and ready!
David from jax
The hammer treatment won't make it run better. Do try and avoid it!
When I get to your point, taking a break then starting from scratch and checking all the stuff from the ground up often finds the overlooked root cause.
Check timing, check for damaged gears, bent push rods, stuck valves, validate that you are on the compression stroke, etc.
jb
When I get to your point, taking a break then starting from scratch and checking all the stuff from the ground up often finds the overlooked root cause.
Check timing, check for damaged gears, bent push rods, stuck valves, validate that you are on the compression stroke, etc.
jb
OP
Iplayfarmer
Super Member
john_bud said:
I've got other things to do for a few days. I think the time and distance will be good for the project.
A few friends who have been following my progress have asked me lately how things are going. I've shared the details of what I've done and what the results have been. I can't tell you how sick I am of hearing "Well, then it should run."
Ain't that the truth!
If it aught to be running,then why don't they come and bang head on it for a while?
I would reset the timing of the tractor and make sure that it's on the compression stroke. It sounds like it's on the exhaust stroke from the symptoms.
jb
If it aught to be running,then why don't they come and bang head on it for a while?
I would reset the timing of the tractor and make sure that it's on the compression stroke. It sounds like it's on the exhaust stroke from the symptoms.
jb
RobJ
Elite Member
Iplayfarmer said:
I went back to your first post and reread it again. First, with a drop in pump I don't think you can get it our of time enough to not run. You can not get this pump out 180 degrees because there is no gear on it. It's all roller lifters that ride on a camshaft. Unless the gear jumped somehow...that's unlikely. The way you adjust the timing on a drop in is by sliding it up and back on the flange...or by shimming under the pump. I think on my kubota it only uses shims becase the pump isn't slotted like the diesels I used to work on. But here is a link to a thread I put together when I checked the timing on my L2500. Pull the fuel line off and look for fuel movement right at the pump...you should not see bubbles...just fuel movement.
http://www.tractorbynet.com/forums/...ing-timing-kubota-l2500.html?highlight=timing
The issue of black smoke says it's getting fuel. Timing should be "decent", no way the timing just jumps unless something major happens...Since you are getting good spray from the injector the pump seems to be working. When doing the spray test you should hear the whosh of air as the piston comes to TDC, then the spray. Close enough is close enough. I didn't reread all posts but did you try ether. I hate ether but see if you can get it run on ether. If it doesn't at least kick off and run a little then you need to go deeper in the engine. How many hours on this engine? A compression test might be in order.
To bad you are not closer, these are the ones I like to work on. Either it's a 5 minute fix once I see it first hand...or a good news bad news thing...mostly bad news. It's a real head scratcher on the internet.
Good Luck,
Rob
