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NWMO 901 SOS
01-26-2008 22:45:39
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Hello all,
I ran the tractor for about half an hour Friday, started missing. Put old coil on and thought it ran better, but in short order it died. I thought it might have something to do with driving over a pile of dirt I was dragging into the pasture, pretty steep and pulling wheelies a bit. Last time it died it was on flat ground and would not start. Checked spark at coil, looked ok/marginal (jumping 3/16" gap), checked spark at plug, looked ok. Pulled air cleaner bowl and cleaned. Pulled air pipe off cleaner so it bypassed the cleaner all together. Still nothing. Had good flow to carb as I checked by pulling carb drain, and when I choked it I got fuel out the air side of the carb. Still nothing. I was jumping off a 12V battery so I was getting plenty of spin. Pulled plugs and put a little gas in each cylinder. Still didn't fire, but with good spark I got frusturated and pulled the air cleaner and carb. Took both apart and am cleaning/rebuilding to put back on.
I know timing is the only other thing to worry about and given the off and on nature of the problem, didn't figure I had jumped a tooth.
Sorry for the long post. The old fiber I removed was from my first effort some 17 years ago. Used fabric from furnace filter. Didn't remember where I got that idea, but when I called the local New Holland dealer, they said it was what they recommended because they couldn't find a supplier for the other. Probably used it last time on their advice. I've got a manual and have read and better understand the carb, initial settings, etc.
I know tired engine, lack of compression can act this way as well. I am sure this is no substitue for checking compression, but it seemed to pull a pretty good vacuum when I put my hand over the air intake.
Sorry it has taken two weeks to get back. YT shipped my parts and I got them in one week, but the weather and other obiligations kept me from working very much on the tractor.
As previously reported, I got Berryman chem dip and a new carb kit and went through the carb. I also ordered the new wire fabric for my air filter and went through it. My biggest frustration was putting a brass ball valve in my fuel line. After asking here, I went with a flared end gas fitting of the proper size. I cut a small piece of the metal fuel line out and added the valve. It leaked some the first try, so today I cleaned it up and tried again. I don't want to claim victory yet, but it wasn't leaking today after I got it back together. I have done nothing to the points.
After getting it back together this afternoon, I tried starting it and it fired right up. I drove it out to the barn and it seems to be more responsive than before and idle lower w/o dieing. I will check the spark strength tomorrow just for curiosity sakes. TSC is suppose to be getting points/condensor in this week and I am going to replace them. I look forward to seeing a fat blue spark jump an inch or so. Obviously my lack of starting could have been heat related as I had been operating the tractor. I hope to find a similar spark to what I previously described when I check tomorrow. That would give me some confidence the problem had been fuel related.
I will let you know how new points/condensor change things.
Chris
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