I blame it on the ethanol added fuel. Joe consumer buys OPE, runs it a few times and puts it away for next year, full of fuel. Next year that carb is clogged and maybe the rubber is already cracked from the fuel sitting all year. To Joe consumer, that OPE is still "new"! Surely it just needs some starting fluid and once it runs it will run like it did last year. A little doesn't help so a little more will do. Now ol' Joe is mad and the can is emptied down the carb. I can see it.
Go grab a can of fresh air is what we called it years ago with stubborn starting Cat heavy equipment. There was always a case in the job trailer. Right next to my GPS equipment. Interesting mix of responsibilities Never poofed a motor. Sure made some rattle if you were to "give er" too much! Never ever used the stuff in the 2 strokes. Terrible idea.
I've drove many a no start tow ins on brake clean at the dealer i used to work at. Pull the air intake tube and make someone sit under the hood pulsing brake clean into the throttle body while another drives. Just don't let the driver touch the throttle or you'd likely get a fireball blown back at ya if you're the guy under the hood with the can.
Guy at the place I worked at used a couple cans to clean out the plastic manifold on a wind star. Guess what when he started the motor the leftover BK ignited and blew the intake clear off the motor!
I remember that. My cousin had a 4230 that I drove many hrs. He also had a 4320 earlier and 4640 later, he got a 4840 after engine trouble with the 4640
JD does have a system on models numbers, for the farm tractors anyways, the larger the first number(s) the larger the tractor, the larger the last two numbers, the newer the tractor...roughly.
Half the Glock 10mm I've shot have blown up in my hand. Many tiny little shards of breech-face and Glocks special coating embedded in my thumb. It took two weeks to get the last little annoying piece out. I used a Streamlight Stinger as my "imaging" tool.
It was a buddy's, he claims the loads were factory, but I suspect they were his reloads. I think Glock charged him to repair it from what I can remember. That kind of tells me my hunch may have been correct. Sorry for the thread drift FarmerJ