Sanity check - 1772 & 1882 - Page 6

FrankF3 · #51 12-20-2020, 09:38 PM

If you crank it over with the fuel shutoff, does it spin over "evenly" or does it sound like there's a skip while spinning over,like a cylinder with low compression?

Daleag · #52 12-20-2020, 09:52 PM

I actually tried that earlier today, it sounded even to me, wish I would have recorded it though. I'm still gonna check valve lash first, but that does tend to suggest it's not valves or other things that would reduce compression significantly... so probably the injector huh?

Cubcadet_107 · #53 12-20-2020, 09:59 PM

oh yeah that middle cylinder wasn't firing at all, definitely explains why it sounded so off and why it had such a lack of power.

I definitely don't know too many people that own an Infrared camera though!

Daleag · #54 12-20-2020, 10:13 PM

That's a USB IR cam that attaches to a cell phone! About as inexpensive as one can get and still be useful for things, I got it specifically for stuff like this and it just earned it's keep

FrankF3 · #55 12-21-2020, 07:58 AM

I like the idea of an IR camera. When I was working on my 1772, I used one of those non-contact laser pointer type thermometers from Harbor Fright. It worked but I like your method better.

Now for the injector, someone on here suggested moving it to another cylinder to see if the problem follows it. If you don't want to do that, you can at least remove it and see how it looks, maybe get it tested.

CubDieselFan · #56 12-21-2020, 10:07 AM

Quote:

Originally Posted by Daleag

That's a USB IR cam that attaches to a cell phone! About as inexpensive as one can get and still be useful for things, I got it specifically for stuff like this and it just earned it's keep

I have been wanting to get one of those. Which one did you get?

Cubcadet_107 · #57 12-21-2020, 10:31 AM

Quote:

Originally Posted by Daleag

That's a USB IR cam that attaches to a cell phone! About as inexpensive as one can get and still be useful for things, I got it specifically for stuff like this and it just earned it's keep

pretty cool...

wouldn't be of much use to me though... with my tractor's engines, if a cylinder isn't firing she can't run at all!

Daleag · #58 12-21-2020, 07:44 PM

So today all I had time for was rotating the injectors over one hole. Wiped the tips down as I went, blew them out with the air compressor, and filled them with injector cleaner before reinstalling everything.

Pre-rotation:
Pre-rotation.jpg

Post-rotation:
post-rotation.jpg

Now the videos.

Yesterday: https://photos.app.goo.gl/oe7p6UCXTAQGsGmC8

Today: https://photos.app.goo.gl/KD3U4uXTTfBZkYtf9

It's pretty obvious from the thermal pictures that the problem followed the injector... however what's not obvious from the thermal pix but IS in the videos is the HUGE DIFFERENCE IN PERFORMANCE. The butt-dyno is indicating it's running similar power levels to the 18hp Kohler powered 1882 now. A few wisps of light gray smoke and no more black.

CubDieselFan · #59 12-21-2020, 08:00 PM

It does sound a lot better.

TheSaturnV · #60 12-21-2020, 08:38 PM

FWIW here's an old video of my 882 with the D600. Finest engine I've ever owned in a GT.

Remember you should have 3 fuel filters. An inline cartridge right by the pump, the sight glass one on the side of the engine, and the third is a screen that sits right at the exit of the supply line on the bottom of the fuel tank.

Mine was almost completely clogged when I did my first maintenance. I have worked the Kubota hard doing mowing, towing, and box blade duties. It can just about run an entire summer on one tank of diesel.

Few words of advice: Do the glow plug, bypass relay, ground wire and high torque starter mods. It will start like a champ, year round.

Check/replace the water pump and have the radiator pressure tested. Keep the removable radiator screen clean and do not let it overheat. Your choice of Shell Rotella is good.

Last, don't ever let anyone talk you out of it.

https://youtu.be/P4SH8N61ar4