hey y'all, my ol 9n with 8n engine finally has fuel issues all fixed up and I'm now moving on to the distributor. my tractor does have a 12 volt conversion (alternator is messed up/only works when it wants to) I charge my battery before I take ol bust out but anyway, I've looked at my distributor (front mount 8n engine) and one side where the bolt goes in is broken, no problem I said. I'd get a new used one with both holes intact and have my papa help me put new points and stuff in it. here is the part where I'm confused, so we replaced the points and stuff in a used front mount pulled off another 8n that did run. we put it on my tractor and it sputtered and popped real slow as the ol boy slowly fired, it never got up to full idle speed and when I tugged at the throttle the ol boy gave a might backfire and stalled. shoot I said I'll just put the old one back on I said. I put the old one back on, hooked the battery back up and vroom fired right up as always but this time more poofing noises from exhaust. my friend tells me the poofing is just a flathead being a flathead, I've heard people call it "popcorn popping?" anyways I'm wondering if I should try to fix the newer one or just put the old ones internals in the new case, however I'd really appreciate it if I could have some help figuring out the poofing noises and the distributor troubles. thanks in advance.
(I do also have a video of the poofing noises that I can upload if y'all need it for reference)