Recent content by timpursell

It's a 2013 model, and I was also surprised it was the injector pump. I only have about 600 hours on it, so it isn't used that hard. That is exactly why I literally tried everything else before I even considered it as a possibility!

FINALLY! I got it fixed. 🎉 For those of you wondering if this ever got resolved, here's the final chapter of the story. There was only one last thing for me to consider - the injection pump. With great trepidation, I took it apart and tried to see if there was anything that could be cleaned...

OK...i finally got some better test gear and repeated the tests. There appears to be good compression on all three cylinders when the engine is cold. About 450-500 (assume the gauge isn't calibrated perfectly, but I was doing a relative test, not absolute.) I ran the tractor until the problem...

Yeah, I kinda figured that. 😞 That is exactly why I was trying to repeat the tests. I didn't trust what I was seeing the first time. ...and the saga continues.

Well... I FINALLY got all the right parts to actually do a compression test. I was able to to check all three cylinders code before the cheap brass glow plug adapter broke and the internal schrader valve started leaking. Anyway, here's what I got: First cylinder tested ~ 450 psi on the first...

That's a great thought. I suspected that at some point as well. But the blades turn just fine by hand even when hot. Also, just trying to drive the mower up a small incline when warm (with all PTOs disengaged) will bog down the engine. I'm waiting for my special 8mm adapter to arrive and...

My new compression tester kit arrived today, and I excitedly headed to the garage to give it a try. I guess I should have done a little research before I bought something, as the glow plugs on this tractor are TINY (M8, I believe). My kit didn't have that size, but upon further inspection it...

Well, I repeated my "bypass the fuel tank" experiment last night and still have the same problem. That would ostensibly rule out the portion of the fuel line that feeds the pump, but I have never done anything with the line from the lift pump to the engine That might be worth checking out as...

Yes - it will drop as low as 2500 rpm under the slightest load when hot. The entire rpm range at NO load drops from 3500/1200 to 3300/900 as the engine warms up.

Sorry - Wide Open Throttle

Well - I finally had a chance to adjust the valves earlier this evening. Most of them were in excess of .008", but the intake on cylinder 1 was real tight (less then .005, which is the smallest blade on my feeler gauge). I adjusted them all to .006" and was hopeful I had actually solved...

Thanks to all for the great ideas. It's going to take me a few days to get some additional tools and try a few more things. I'll keep everyone posted on my progress. I know it is frustrating to see a thread like this that has no closure and just keeps everyone hanging...

Great thought. I tried to eliminate the tank as the culprit by rerouting a line to pull directly from an open container of fuel and had the same problem. It really does seem like a simple fuel flow issue which is why I focused so much on that up front. This mystery is driving me crazy at...

Interesting thought. That is one thing I have not checked. Could that cause the symptoms I am experiencing as the engine parts warm up? Will the gasket survive after removing the cover or should I get a new one to have on hand just in case?

I'm with you. I like actually knowing stuff rather than guessing! So far everything I know hasn't helped resolve the issue, so by definition there is still something I don't know... :unsure: