9n runs rough

[IONAGUN]

I have a 45 9n ford that runs real rough. I have changed the points
wires and coil. Checked the timing and put on a new carb. It still
runs the same. It is hard to start and when it starts it runs rough.
Any ideas?

 

[gwm63965]

Is the gas fresh? Does it run better with the choke pulled?

 

[Dell (WA)]

IONAGUN.........first thing you do is quit throwing parts at yer problem. 2nd thing you do is the dreaded compression test. Ford specs; 90psi min (new engine is about 125psi) POST yer compression readings; 3rd thing; keep yer itchy-twitchy fingers off'n them handy-dandy carb tweek'ums. 4th thing; while the 4-nipple frontmount squarecan coil is not as robust as we'd like it to be; it takes about 1-hr fer it to go bad. 5th thing; change yer weak sister ignition switch ($15, cheap) It starts going BAD after about 15-mins of running; cures its self with 30-min cool down. .......HTH, Dell, yer self-appointed sparkie-meister

 

[Royse]

Since you changed the wires, I would first check the firing order.
1-2-4-3 CCW. Real easy to swap 4 and 3.
If that's good, do you have good blue/white spark at the plugs?
If not you'll want to check the ignition circuit including the new points.
Especially if they were cheap ones with a plastic rubbing block.
If so, do you have good gas flow out the drain plug on the bottom
of the carb? Should run steady, not dribble, about a pint in two minutes.
Catch it in a container and check for water and/or dirt.
Let us know what you find.

 

[Curtsat15]

Reading a previous post, I would check the air cleaner. Possibly check to make sure the exhaust doesn't have a mouse nest in it (BTDT)

 

[Anonymous-0]

did you ck. plug wires at dist. cap..mine worked loose had the same kind of miss