I have a D722 engine that needs an injection pump. Have a line on a D1105 engine and wonder if the pumps would be interchangeable. Both are 3 cylinder diesels. Any advice is appreciated!
D1105 injection pump work on a D722 engine?
- Thread starter Delmar
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North Idaho Wolfman
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No they are not the same or interchangeable.
Why do you need new pump?
Do you have one in it now?
Why do you need new pump?
Do you have one in it now?
Hi, NIW. I was hoping you would chime in.
I have a G1900 mower and just bought a second one for a good price (pick it up tomorrow). The owner says it "won't start" and "the injector pump is bad." I have no idea if he knows what he's talking about or not.
The mower is in good shape (900 hours) with a solid 60" deck. Even if only for parts, it's a good deal. However, I might try to repair it.
Once I get it I'll check fuel pump, lines, and filters. Maybe I'll get lucky.
Any tips on diagnosing the injector pump?
Thanks! Jeff
I have a G1900 mower and just bought a second one for a good price (pick it up tomorrow). The owner says it "won't start" and "the injector pump is bad." I have no idea if he knows what he's talking about or not.
The mower is in good shape (900 hours) with a solid 60" deck. Even if only for parts, it's a good deal. However, I might try to repair it.
Once I get it I'll check fuel pump, lines, and filters. Maybe I'll get lucky.
Any tips on diagnosing the injector pump?
Thanks! Jeff
jkmetcalf, because the owner says the, "injection pump is bad" does not mean the injection pump is not doing it's job.
Could be something as simple as air in the system.
I'd start with making sure you have good, clean fuel. (He may have mixed some gas in the tank, you never know). Then new fuel filter (probably replace air, oil and oil filter also). Bleed the fuel system.
Now you can see what happens and go from there.
Note, at this point, if you get goose bumps on your neck, the engine has fired off and you're the hero!!
If not, post back what you discover/see.
Could be something as simple as air in the system.
I'd start with making sure you have good, clean fuel. (He may have mixed some gas in the tank, you never know). Then new fuel filter (probably replace air, oil and oil filter also). Bleed the fuel system.
Now you can see what happens and go from there.
Note, at this point, if you get goose bumps on your neck, the engine has fired off and you're the hero!!
If not, post back what you discover/see.
North Idaho Wolfman
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Yea the chances of it being user error are 1000 times greater than it being the injection pump.
But if it does turn out to be a pump issue give me a shout, I can fix most normal issues with injection pumps.
But if it does turn out to be a pump issue give me a shout, I can fix most normal issues with injection pumps.
Thanks, NIW and D2Cat. I appreciate the responses. I look forward to getting into it over the coming weekend and will let you know what I find. I'll hope for the "hero" option!
I guess I'm no hero. I worked on the tractor a little today, but didn't get it running. Changed fuel filters, drained fuel tank and filled with fresh diesel.
Turns over good but never fires. Glow plugs are good. Fuses are good.
Cracked injector lines and when the engine cranks fuel pumps through the lines. It just oozes out, though, with a rhythmic pump. Kind of like a bleeding cut that pulses with a heartbeat. Is that normal? Should fuel spray out with more pressure?
Any thoughts on more diagnostics I could try?
I appreciate any assistance. Thanks!
Turns over good but never fires. Glow plugs are good. Fuses are good.
Cracked injector lines and when the engine cranks fuel pumps through the lines. It just oozes out, though, with a rhythmic pump. Kind of like a bleeding cut that pulses with a heartbeat. Is that normal? Should fuel spray out with more pressure?
Any thoughts on more diagnostics I could try?
I appreciate any assistance. Thanks!
North Idaho Wolfman
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Pull all the lines off of the injection pump and the injector side.
Pull at least one injector.
Set the throttle to high, crank it and watch the pump outputs fuel should fountain out of the pump 1" to 2" or so, and they should all be the same height if not you have a pump issue.
If that's good, connect one line to the pump[ facing out the side, attach the injector loosely (you need to bled it) crank it till you get good fuel flow out the loose conection. DO NOT put your hand under the injector, use a piece of paper or cardboard under the injector and give it a crank, if the injector puffs fuel with no drip at the tip and the puff pattern looks good then most likely you have a compression issue, if it does not you have an injector issue, pull the rest and check them!
Pull at least one injector.
Set the throttle to high, crank it and watch the pump outputs fuel should fountain out of the pump 1" to 2" or so, and they should all be the same height if not you have a pump issue.
If that's good, connect one line to the pump[ facing out the side, attach the injector loosely (you need to bled it) crank it till you get good fuel flow out the loose conection. DO NOT put your hand under the injector, use a piece of paper or cardboard under the injector and give it a crank, if the injector puffs fuel with no drip at the tip and the puff pattern looks good then most likely you have a compression issue, if it does not you have an injector issue, pull the rest and check them!
Thanks, NIW. You're fast! I'll try to follow your instructions tomorrow.
It sounds like you suspect either 1) injection pump, 2) compression, or 3) injectors. Right?
I'll follow your instructions for testing pump and injectors. If it's neither, I'll go buy a compression tester.
When I check fuel spray from injector, should I connect the other two injectors, or leave them loose?
Thanks again. Jeff
It sounds like you suspect either 1) injection pump, 2) compression, or 3) injectors. Right?
I'll follow your instructions for testing pump and injectors. If it's neither, I'll go buy a compression tester.
When I check fuel spray from injector, should I connect the other two injectors, or leave them loose?
Thanks again. Jeff
North Idaho Wolfman
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Yes that would be the three possibilities that are top on my list.
I do one at a time, it gets a little unruly trying to keep track of too many spraying jets!
But it won't hurt if you do them all at once.
Just be cautious of the jet sprays!
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Got to work on the tractor a while today. Followed NIW's advice/instructions.
Removed fuel lines from injector pump and cranked starter - fuel "spritzed" out of each line. Actually went pretty high in the air. Working outside and it was a little windy = nice little diesel mist.
Changed clothes
Next, I checked each injector by cranking starter and holding a piece of cardboard about 6" away from injector heads. Seemed like a nice circular aerosol type mist from each line. Learned a lesson - when you remove the injector from the engine head, there is a brass washer and some kind of thing that looks like a miniature thimble with a small hole in it resting at the bottom of the injector socket. How do I know? When I cranked the starter to test injectors, they went flying in the air! I was very, very lucky to find them since I was working outside and didn't even know what I was looking for.
Got a compression tester, but there isn't an adapter in the kit small enough for my glow plug holes. Will have to order one. Based on the force it propelled the washer/thimble, there is at least "some" compression.
I tried some starting fluid and it didn't even try to fire with that. I unhooked the air intake hose and sprayed directly into the manifold. Nothing.
So, it looks like I'm going to have to wait to get an adapter and do a compression test.
Thanks, NIW.
Removed fuel lines from injector pump and cranked starter - fuel "spritzed" out of each line. Actually went pretty high in the air. Working outside and it was a little windy = nice little diesel mist.
Changed clothes
Next, I checked each injector by cranking starter and holding a piece of cardboard about 6" away from injector heads. Seemed like a nice circular aerosol type mist from each line. Learned a lesson - when you remove the injector from the engine head, there is a brass washer and some kind of thing that looks like a miniature thimble with a small hole in it resting at the bottom of the injector socket. How do I know? When I cranked the starter to test injectors, they went flying in the air! I was very, very lucky to find them since I was working outside and didn't even know what I was looking for.
Got a compression tester, but there isn't an adapter in the kit small enough for my glow plug holes. Will have to order one. Based on the force it propelled the washer/thimble, there is at least "some" compression.
I tried some starting fluid and it didn't even try to fire with that. I unhooked the air intake hose and sprayed directly into the manifold. Nothing.
So, it looks like I'm going to have to wait to get an adapter and do a compression test.
Thanks, NIW.
An update: I finally was able to fab up a fitting to check compression in the cylinders. Each was at around 180-200psi. With some oil added, one cylinder got up to a little over 300psi, but the other two didn't improve dramatically.
I was not able to pump air into the cylinders to try to figure out where it was leaking. The compression fitting I ordered (fits in glow plug port) has a schrader valve in it so air will only flow one way ("out" of the cylinder).
I drained the oil and didn't notice any fuel or water. I assume it would be readily apparent. ?? Also, the coolant looks nice and clean in the radiator.
So, perhaps it's rings, valves, or a bad head gasket. I have never torn down an engine of any kind so I'm admittedly ignorant. However, it's a spare machine that I have very little money in so if I make a mess I'm not really out much.
Thanks again, NIW, for your help. I'll start a new thread if I tear into the engine.
By the way, the compression tester fitting I ordered is a 8mm fitting to fit the glow plug hole. It has a quick-connect male end that is smaller than typical 1/4" air hose quick connects. I looked everywhere for an adapter and got nothing but blank stares. Can't even find one online. I think they're made to fit a Kubota compression gauge kit. I fabbed it up by heating the end of a piece of high pressure tubing and shoving the male quick-connect end into the tube; then used a small band clamp to seal it. It worked, but I'd like to find an adapter to be able to do it right. Any ideas?
I was not able to pump air into the cylinders to try to figure out where it was leaking. The compression fitting I ordered (fits in glow plug port) has a schrader valve in it so air will only flow one way ("out" of the cylinder).
I drained the oil and didn't notice any fuel or water. I assume it would be readily apparent. ?? Also, the coolant looks nice and clean in the radiator.
So, perhaps it's rings, valves, or a bad head gasket. I have never torn down an engine of any kind so I'm admittedly ignorant. However, it's a spare machine that I have very little money in so if I make a mess I'm not really out much.
Thanks again, NIW, for your help. I'll start a new thread if I tear into the engine.
By the way, the compression tester fitting I ordered is a 8mm fitting to fit the glow plug hole. It has a quick-connect male end that is smaller than typical 1/4" air hose quick connects. I looked everywhere for an adapter and got nothing but blank stares. Can't even find one online. I think they're made to fit a Kubota compression gauge kit. I fabbed it up by heating the end of a piece of high pressure tubing and shoving the male quick-connect end into the tube; then used a small band clamp to seal it. It worked, but I'd like to find an adapter to be able to do it right. Any ideas?
Daren Todd
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Check harbor freight. I remember seeing other folks posting that there pressure test kit has the adapter for the glow plug holes on a bota.
Thanks, Darren. I did check HF, as well as practically every other tool store. I didn't find any kit that comes with the 8mm adapter. A 10mm is the smallest in all the kits I found.
I removed an injector and took it with me to HF thinking that one of the 20-piece kits might have an adapter that would connect somehow to one of the fittings on the injector (there are several pieces of different sizes on an injector). No luck.
I removed an injector and took it with me to HF thinking that one of the 20-piece kits might have an adapter that would connect somehow to one of the fittings on the injector (there are several pieces of different sizes on an injector). No luck.
North Idaho Wolfman
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Sounds like you got your adapter from a set like the one pictured below, I bought mine off Ebay, or Amazon.
And you can pull the schrader valve out with a simple tire valve stem tool.
Before you go any further check the valves, I would loosen them up and get another compression reading on it, tight valves will blow the test.
For anyone needing one this is the right model that will fit the older Kubota engines both GP and Injector:
http://www.ebay.com/itm/0-1000-PSI-...:g:AdsAAOSwn8FXSIZi&item=151268583120&vxp=mtr
Mine:
And you can pull the schrader valve out with a simple tire valve stem tool.
Before you go any further check the valves, I would loosen them up and get another compression reading on it, tight valves will blow the test.
For anyone needing one this is the right model that will fit the older Kubota engines both GP and Injector:
http://www.ebay.com/itm/0-1000-PSI-...:g:AdsAAOSwn8FXSIZi&item=151268583120&vxp=mtr
Mine:
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The glow plugs are good. Not sure about valves, gap is good (. 007), but not sure what else to check on them.
NIW, if the kit you reference will work on a D722 engine I'll order one. It looks exactly like the Harbor Freight kit, but maybe it has different fittings.
Also, NIW, I adjusted the valves to. 007 with a valve tool. If I loosen them for another compression test how loose should I make them?
I appreciate your advice and patience.
NIW, if the kit you reference will work on a D722 engine I'll order one. It looks exactly like the Harbor Freight kit, but maybe it has different fittings.
Also, NIW, I adjusted the valves to. 007 with a valve tool. If I loosen them for another compression test how loose should I make them?
I appreciate your advice and patience.
North Idaho Wolfman
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If you already have the right glow plug fitting it will work even if the other kit doesn't have the right one, which I think it does.
I think you're almost past the point of any more tests, I would pull the engine and rebuild it, they are a walk in the park to rebuild.
I think you're almost past the point of any more tests, I would pull the engine and rebuild it, they are a walk in the park to rebuild.
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coachgeo
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It does. Got one myself and used on my KbotaIf you already have the right glow plug fitting it will work even if the other kit doesn't have the right one, which I think it does.
I have the same issues with cranking on a D1105 E and just ordered the compression tester listed above. so I can check that side of it. This machine was rebuilt not even a year ago and there have been a lot of hands in trying to get the machine running. it ran and just shut off is what I am told. I am thinking on running the valves due to the fact they seem real loose. do you know where I can find the procedure for that?
I also found another odd thing with this engine when working on it. I spun it over and it cranks pretty strong. When I caped off the air intake with my hand it spins faster! very odd. I did have a slight Black exhaust coming out so I know I am getting fuel. plan on running the valves and checking compression. where should I be on compression pressure? I did all his with the stop solenoid removed to make sure There were no issues there!
Thanks in advance for any help.
I also found another odd thing with this engine when working on it. I spun it over and it cranks pretty strong. When I caped off the air intake with my hand it spins faster! very odd. I did have a slight Black exhaust coming out so I know I am getting fuel. plan on running the valves and checking compression. where should I be on compression pressure? I did all his with the stop solenoid removed to make sure There were no issues there!
Thanks in advance for any help.
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