1948 Super A Running Problem...dies at will!

[raymonddurban]

... Just wondering if anyone had any more pointers before I start disassembly of the fuel system. :lol:

Call BillyRay, I'm sure he'd jump on any chance to come over and help fix something for you!!

 

[Mr E]

... Just wondering if anyone had any more pointers before I start disassembly of the fuel system. :lol:

Call BillyRay, I'm sure he'd jump on any chance to come over and help fix something for you!!

That is my New Year's resolution. :{_}:

 

[Denny Clayton]

... Just wondering if anyone had any more pointers before I start disassembly of the fuel system. :lol:

Call BillyRay, I'm sure he'd jump on any chance to come over and [strikethrough]help fix something for[/strikethrough] supervise you!!

:wink:

 

[Don McCombs]

Roy,

How old is the condensor? I don't normally recommend just throwing parts at a problem, but you might try that. It's quick and not costly.

 

[panda]

I would try a new condenser . Had a 300 Case act the same way . Through everything but the kitchen sink at it. The owner even had the motor rebuilt with no resolution of the problem. I finally replaced the distributor and it ran fine for two days and started acting up again. I just don't trust some electrical parts so replaced the condenser with a good (USA built) one and she ran fine the rest of the year. Best of luck with this one.

 

[Mr E]

Thanks, guys. I'll give it a try and report back.

 

[randallc]

Sure sounds like a floater in the tank. Piece of old cork gasket that is fuel logged and will slosh around, onto to the inlet and the slosh off it. They'll drive you up the wall till you find them. Happened a couple of times for me. No set time when this would happen. Just when it floats in the inlet and obstructs, then float off, then back. Settles on the bottom when it is not running and sloshing around and when you are not moving. Look in the tank when it is shut down and it simply looks like a little spot of rust.

 

[Mr E]

I agree. It sure does sound like that could be it. The tank looks really good. I'm gonna take a few more peeks in there with a good light. :lol:

 

[Lt.Mike]

I would try a new condenser . Had a 300 Case act the same way . Through everything but the kitchen sink at it. The owner even had the motor rebuilt with no resolution of the problem. I finally replaced the distributor and it ran fine for two days and started acting up again. I just don't trust some electrical parts so replaced the condenser with a good (USA built) one and she ran fine the rest of the year. Best of luck with this one.

This is why I make it a rule that if you are not sure of the cause with an obvious culprit staring you in the face and you must throw parts at it make it the little cheap ones first. The ones that you would have to replace someday anyway as part of maintenance. This way at worst you have a spare on the shelf if it wasn't it.
That kind of symptom confounded me with my "58 Lo-Boy. The wiring was shot it was really a mess and the alternator was not charging. After taking the time and pride to rewire it with a new alternator and all ignition parts it was still cutting out.
That was frustrating. I noticed that the elbow to the carb was wet so I took it off to wrap it with teflon tape. It was then I found a screen I didn't know about and that it was clogged. After cleaning it it ran better than it ever had for me before.
What a relief that was. I'm sure that the rewiring added to the improvement greatly. :wink:
To this day it will sit for weeks but when I pull that starter rod it will fire sharply on the first rev every time.
Can't say if this is you're what you have but maybe its a piece of the puzzle. It may just be a combination of 50-60 year old issues needing attention.

 

[Mr E]

Update on my Super A.

To recap, put a new coil and a new condenser on it. No improvement.

Drained gas, (very good flow from line going to carb). Cleaned sediment bowl.
Tried again. No improvement.

Removed carb. Took it apart and cleaned all jets with soft wire, compressed air and carb cleaner. More compressed air.
Put it back together. Ran like a champ!

Just so I would know, I put the old coil and condenser back on it.
Still ran like a champ.

Pulled the disk for about and hour. Worked great. Then quit on the way to the barn.

Still good flow to carb. Not much flow thru the carb.
Took it off and cleaned it again. Running good once again.

Evidently I still have some very small trash getting into the carb. Even though the tank looks fine, I think it is time for a good cleaning.

 

[Bezirk]

I had a similar problem with my first F Cub and I was too lazy to give the gas tank a good cleaning. It finally got me irritated to the point that I removed the tank cleaned it and that completely solved the problem. Good luck with this one.
Berlin

 

[Lt.Mike]

Going with what you've done and a process of elimination it sounds like there is a varnish or whatever coating in the fuel line between the filter and the carb.
That gunk may be flaking away as fresh gas runs through it and that may be re-clogging the carbs jets.
The metal line rarely gets attention when everything else, carb, strainer. tank, gets cleaned.
If its a rubber fuel hose toss it for a new one.
Ever run Seafoam through it?