The Ford has always started right up with no problem. On December 26th I hauled the tractor to clean the church’s parking lot, got it back home and in the barn no problem. I mentioned this because I don’t know if trailering rattled something loose or what.
On January 12th I went out to plow the driveway, I believe it was around 25*F out. Opened up the barn, tried to fire up the Ford LGT 165 with no luck, it would crank, and start to start, but then would cough and die. I got out the kerosene jet heater and warmed up the tractor and it fired right up, had to jump it since the battery was weak after cranking before I got the heater out).
Last week snow was forecasted, so on Wednesday(Jan. 19th) I went out to fuel up the ford and run it a little. It fired right up no problem, made me think I was ready to go for the snow the next day. It was around 33*F that’s afternoon.
Thursday Jan. 20th I go out to plow, 20*F, Same symptoms as on the 12th. Warm it up and still no change. Start trying to trouble shoot. It has a blue spark. Drained gas, replaced with gas bought the day before. Still no change. Checked fuel flow downstream of fuel filter and it was good. Checked fuel flow out of fuel pump and it was good. Replaced starter with the starter from the 14 hp Kohler, no change. Took part and cleaned out carburetor, no change. Changed plug, wire, coil, and condenser from the 14 hp to the 16hp and saw no change in spark. Compression feels a little low, but not sure how much there should be since this motor has a compression release.
At this point I am thinking for some reason the exhaust valve isn’t seating, since every now and then it back fires thru the exhaust. I think gas/vapors are building up in the muffler then when it sparks I am getting the back fires, which can be heard in the video.
Was wondering if you have down a compression test on it? It sounds like it wants to start but if it is lacking in compression then it won't draw in enough fuel/air mixture to run. When was the last time it ran? Maybe try a new spark plug. That is what I have to offer from what I can tell from your video. Good luck and keep us posted when you find out why it wouldn't start.
No compression test yet. I am going to try and do one this week. I tried and different plug, but haven’t tried a new one yet.
Try taking out the spark plug and pouring a small amount of gas in the Sarkplug hole.
I tried that with no luck. It didn’t even change the way it cranked.
I know someone had a JD 318 and it sounded the same way. When they helped it out by adding gas to the sparkplug hole if fired right up and was fine after that.
Sounds like you're blowing back thru the carb? That first set of noises i thought I heard a little blow back in there.
I’ve tried a different starter and with the battery charged and fresh. The cables were hooked to my deep cycle boat battery since these gt tractor batter don’t give you a lot cranks when trying to get them going. I don’t think its blowing back thru the carb.
If compression checks out good... the only unmentioned thing I can think of is RPM on the starter, if the starter was turning over faster, it'd stay engaged a little longer & maybe let you get her running. I see battery cables in there, do you have a good battery to set in & try again?
Thanks for all the suggestions and help, I look forward to more.
I also want to thanks Olcowhand for answering my emails this weekend and letting me pick his brain.