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I'm thinking it might have been sticky piston rings either.

Didn't think of that... hopefully I got away with it. Probably only a couple of mls of oil down each hole.

Good news, I finally got her started! I drained the oil and filled with fresh 15w40. I also squirted a small amount down each glowplug hole. I heated the glowplugs for about 30 seconds and she fired up pretty much straight away. The waste oil smells slightly of diesel. So I'm not sure if the...

Thanks, There is a diesel injector service centre in my local town, so it's looking like I'll be paying them a visit! I always like to try fixing things myself if possible because it can get very expensive otherwise!

Like you've suggested, it may well turn out to be the injectors, but to be fair they looked pretty good. Would contaminated oil make any difference? Maybe with water from torrential rain or diesel from flooding it? As it was running previously, I'm not sure how the timing could have changed? I...

I went ahead and did a compression test anyway, seeing as I had bought the test kit. I made the adapter shorter, as per photos of other kubota specific glowplug adapters from a Google search. Cylinder 1 (closest to fan) - 350 psi Cylinder 2 (middle) - 364 psi Cylinder 3 (closest to flywheel)...

Thanks, no harm doing a compression test anyway I suppose. Would I have to cut this adapter shorter or would it be OK? (At the white mark that I've made in the photo) Is there a danger that the long adapter could hit the piston?

I checked the lever positions and they're all in neutral. Still just black smoke, no start. I've bought a compression tester with m8 adapter. Any tips on how to do the compression test?

I'll have to double check this, thanks!

I bought brand new diesel and connected a new fuel hose so its sucking out of the drum. Yes I took the exhaust manifold off and I can see black smoke puffing out of all 3 ports. The pump and injectors were a bit fiddly to reassemble but I'm pretty sure it went OK apart from one injector that I...

The digger has been sitting outside for a few months and we have had a record amount of rain!

I'm pretty sure the glowplugs are getting hot, I can feel the whole rocker cover getting a bit warm after a few cranking sessions. Also I'm guessing that the black smoke indicates that the diesel is hitting the hot plugs? I even used a jumper cable direct to the glowplugs from a separate battery.

Hi, First time poster here, located in Ireland. I bought an old 1 ½ tonne Kubota digger last summer, its model KH-31, with a 3 cylinder D722-E fitted. I used it all summer and it started straight away if you gave it 20 seconds of preheat. It has been parked up for a few months now and won't...