Did the usual tune up stuff...plugs, wires, cap, rotor, fuel filter. Runs much better than before but when starting the truck cold it runs like crap until it warms up. The colder it is the worse..it misses and rough idle. Changed the 02 and coolant temp..still the same. What gets me is it did not do this before the tune up when cold start. Plugs are gapped 35, the old ones were so worn out they were at like 50. I did disconnect battery to reset, and there aren't any trouble codes. What should I check next?
87 jimmy 350tbi
87 jimmy 350tbi
