Ignition problems?

Collin the Hen · #1 (**permalink**) 06-09-2008, 02:00 PM

So, I got my timing light today, hooked it up, adjusted it... spot on.
But, it still sputters and coughs and diesels. I cleaned the carb so it's fine, and my vacuum is steady at 18 Hg. Now the next component is the stock ignition. By the way, it's an 84 258 with a Motorcraft 2100.
Would a bad ignition cause dieseling?
Also, would a bad ignition cause an engine to run poorly until the rpms increase?
Any advise is much appreciated!

PS89YJ · #2 (**permalink**) 06-09-2008, 10:35 PM

Could it be you purchased some bad gas?

redrooster · #3 (**permalink**) 06-09-2008, 11:02 PM

Could be the ignition, but might still be the carb. Check your vacuum advance to the distributor. Did you have the vacuum advance disconnected when you checked the timing?

Collin the Hen · #4 (**permalink**) 06-10-2008, 12:57 AM

I don't think the gas is bad. I'm almost out, but not necessarily bad. Yeah, I disconnected the vacuum line, and plugged it. I didn't plug the actual vacuum advance though. The directions for my light just said to plug the hose. The more I think about it, though, I think it's a carb issue.
I've read that a hole should be epoxied on the base of the Motorcraft 2100. Is this necessary?

My jets are 48, so I think those should be fine. I'll mess with the A/F mixture tomorrow and post some updates.
Thanks!