I600won’t run right

I'd suggest go through the ignition & even if the points are worn make sure they're gapped as close as you can get. 90% of "fuel" issues turn out to be weak/badly timed spark.

Edited by ekjdm14 - 23 Feb 2025 at 5:43am

DiyDave wrote: ign switch, definitely change it, when they get wonky, will drive you nuts.  Second, check your wiring, specifically check the polarity of the coil, - should go to points, on a - ground system.  also check plug wires, common mistake is firing order, 1-2-4-3.  If an IH mechanic has been at it, some wires might be reversed! Before replacing points, consider converting to pertronix system, its the same labor as points, but this will be the last time you have to do it...

Will do Dave. It was running perfect while digging some footers this spring then it just started sputtering like running out of gas or clogged carb. Choke makes no difference which makes me think electrical.
Switch has gotten Wonky for sure.
May try it with ignition unhooked and a jumper wire just to see what that does.

you can just run a jumper wire from the battery to the coil.. no need to disconnect the switch to test.........

Edited by steve(ill) - 23 Feb 2025 at 8:25am

My Model C Allis was parked outside and somehow rain got into the air filter oil cup, then when freezing weather came it solidified into something resembling ice cream; not quite solid but it would not pass air. No start, of course.

A couple updates
I had an old distributor on the shelf. I pulled the points and condenser out of it. I installed them and it wouldn’t hit .
I had a spark tester and it showed to be firing. I pulled the drain under the carb and had a steady flow for several minutes. I reset the points a few times and swapped back to the old condenser and still no luck.
I removed the hose to the air cleaner and no luck
I ran a jumper wire to the coil and no luck.
I switched coils and no luck.
I ran out of time as it’s my afternoon to go to the nursing home to visit my mom.
I put a battery charger on it and left.
When I got home it still wouldn’t hit.
For whatever reason I squirted some carb cleaner in the carb and it fired right up. It even kept running but would start to sputter so I’d give it a squirt and it would clear up.
I’d say my gas is bad.
It doesn’t smell bad or look bad but I think it’s bad.
I ll update when I get it figured out for sure.
Other update is, it’s an i600 not a 400. Don’t know where I got that?

Situations like this can be very frustrating.

steve(ill) wrote: bad gas ........... or maybe your main jet is plugged ???   Easy to get a floating piece of rust/ dirt in the system and STUCK in that little jet.

My thoughts exactly.
I’m afraid it may be a plugged jet.
I cleaned the carb meticulously and ran a wire through every jet. Cleaned some more and shot carb cleaner and air through every jet.
I guess I’ll drain the gas and put in new and try that first then I’ll take the carb apart again if needed.
Power valve and air fuel mixture screw don’t change this at all.

He said he had a good flow of gas out the drain of the Carb.

So with my Post and then Steves Post one would conclude that the fuel problem is

inside the Carb because the fuel isn't getting from the Carb to the Engine.

G

tbran wrote: If it runs fine until it warms up - could be the coil as well.

Given that some thought but it will run with a squirt of carb cleaner.
Wondering if vacuum leak, bad fuel or still plugged.
I’m going to have to give it some more trial and error time.

Yesterday I drained all the gas from the tractor.
I pulled the valve and rinsed the tank with more fresh gas.
I cleaned the valve and sediment bowl and put it all back together.
I then opened the carb drain and ran fresh gas through it.
Put the drain plug back in and it fired up and ran perfect.
I’m still not satisfied gas was the problem but it started and ran like it should.
Today I need to use it some. We’ll see what happens?

Started right up this morning I went to move some stuff around. Before I got the chains hooked up it started sputtering.
I had an old coil in the shop. It was cracked around the top.
I put it on and it ran fine the rest of the day.

tbran wrote: Hmm, who was it that said it could be hot coil issues  ?  :-)

Yes sir and you were correct.

steve(ill) wrote: Earlier it was running on starting fluid.. but not the carb.... Sounds like you had 2-3 Different problems...The recent TUNE UP was surely needed..

The points were wore out worse than I’ve seen in a long time. So yes the tuneup was needed. I’m not sure why it hit on the carb cleaner. Once it hit it stayed running on gas?’
Also at that time I had the coil (6volt ) from my b on it.
I then switched back to the original coil and it fired up and ran great. The next day I tried to use it . It ran great for a few minutes then it started running bad.
I had an old coil in the shop. Top was cracked but I decided to try it.
It ran good for the time that I used it. Ran probably an hour or so.
I believe the tuneup and carb cleaning and kit were needed but I believe the coil was the problem all along.
The choke and power valve adjustments made absolutely no change .