had my truck running good then it started acting like it was misfiring while driving but idled fine pulled all plugs and they looked like it was running rich or i had a waek ignition cleaned them tried to start the truck and just kept blowing flames out the carb figured it jumped time went to work on it today started just fine idles fine but still runs like it is missing when driving

 

i don't know whether its efi or carb, or what engine your running, but it could be a map sensor. If your bored and really want an adventure on the same topic, go through all my posts for the last month. I just got done (hopefully today) dealing with that same problem.

 

it is a 318 carb it has a single pickup distributor with eletronic spark advance