IDI, for sure. I believe those round things are called prechambers, and yes this little cracker has em. They're in there though. You can actually see them through the injector holes.Direct or indirect injection? I had a Chinese built Cummins indirect injection that had removable, round, combustion chambers in the head. The head was sent in to be redone and the machinist did not put them back in the head. I was in a hurry and didn't notice it. It started and ran great but when the RPMs got to about 3/4 throttle it started to spit and sputter and smoke.
Good to know, it took several different Cummins techs to help me find the problem. We all need to be humbled on occasion.IDI, for sure. I believe those round things are called prechambers, and yes this little cracker has em. They're in there though. You can actually see them through the injector holes.
If it's getting starved for fuel, wouldn't the spray pattern go to hell? Also, do you know if the injection pump is working properly? Has this engine ran fine before, and now it doesn't?With the white smoke too? That’s the part that’s actually throwing me off. I’ve never seen a starvation situation with smoke. Smoke always means something else. Others have suggested a timing related issue, and that makes more sense to me.
It would imagine so, and that would generate smoke, I would think. I'd just never seen the smoke in relation to starvation. Of course, you could fill a big bus with what I don't know, so that's not saying much. I was told that it used to "run great". That's all I know about it. This is a machine I took in on trade against an invoice that was owed. Sometimes that gamble works out, sometimes not.If it's getting starved for fuel, wouldn't the spray pattern go to hell? Also, do you know if the injection pump is working properly? Has this engine ran fine before, and now it doesn't?
Air filter is new. Engine does this with or without air filter. As far as I can tell, nobody has taken that pump off. No tool marks on the bolts, paint all intact etc. I’ll take a closer look though. I didn’t see any adjustment on the plungers. I have an S3L here in the shop too, and it’s similar; you can see how the plungers would adjust. On this KE95, I don’t see it. Again, I’ll look closer. You’ve had some experience with this engine?The timing on that fuel system design is adjusted by a shim pack underneath the block containing the injection pumps, which sets the distance above the fuel lobes on the camshaft. Could someone have had that block off and changed the shim pack in any way ?
Fuel delivery amount is adjusted by rotating each pump. They are set to deliver equal amounts of fuel to each cylinder’s injection valve. You have to be careful to not let them turn as you remove the injection line.
Restricted air supply can cause an issue, too. You would expect a lack of air (too much fuel) to cause black smoke, but several times I have run into an engine that ran like a bag of crap at higher rpm’s caused by a choked up air filter and smoked gray, almost white. Stumbled, popping and banging. Like a late JD 4020 with a dry air filter and a secondary air filter up under the hood, on top of the primary air filter housing, that nobody knew about.
Close! Mitsubishi D1800(2)Might this be a Satoh?
Not on a Mitsubishi, but that is a common Bosch design, probably the tag says Diesel Kiki, used by many mfgrs. I’ve worked on Yanmar and Kubota engines that are of that design. Very simple and reliable and almost trouble free.Air filter is new. Engine does this with or without air filter. As far as I can tell, nobody has taken that pump off. No tool marks on the bolts, paint all intact etc. I’ll take a closer look though. I didn’t see any adjustment on the plungers. I have an S3L here in the shop too, and it’s similar; you can see how the plungers would adjust. On this KE95, I don’t see it. Again, I’ll look closer. You’ve had some experience with this engine?
The head work was done because the original head cracked in both bridges and I sent that head to 3 or 4 shops, and they all told me it was not repairable, so I found a junkyard head, and sent it to get decked and magnafluxed and all that.Not on a Mitsubishi, but that is a common Bosch design, probably the tag says Diesel Kiki, used by many mfgrs. I’ve worked on Yanmar and Kubota engines that are of that design. Very simple and reliable and almost trouble free.
Why was the head work done on this ? Was it like this before the head work, before you got the job ? Turbocharged with a stuck wheel ? Or a rag in the intake ? I hope you find something simple.
The head is identical to the old one, that’s all I can say there. The work was done by a shop I trust, so I have no reason to doubt their work. I do have the original set of springs I could put in.What was used to determine the head was exactly the same? How about parts? Are the valve springs right? It's not floating the valves, is it?