Rather than try to explain it myself(don't want to type that much, lol), this guy gives three options, main thing you need to start with is which cylinder is #1.

Does it still have the EGR valve? Recently had some issues with mine and similar symptoms.

Throw out your questions, folks are here to help! (y)

Good luck with that tranny!We had the C4 in our 77 rebuilt way back. It was interesting pulling that thing out with the truck sitting on the ground(think dirt and gravel) but I was doing it by myself and really had no choice. Being low allowed me to use a floor jack to raise and lower it, and...

Good looking truck!

Welcome! Post up pics of your truck when you get a chance, would love to see it!

Have you done any tuning of the idle mixture? Might be worth putting a vacuum gauge on it to make sure it's not running too rich.

Glad you got it figured out!

Yeah, I've tried reconditioning as well and it a helped a little but I had let them go too long so new headlights it is. Sure is nice to be able to see at night, lol.

Keep at it and let us know what it takes to get it going, love hearing progress on these projects. (y)

That is indeed a nice truck, amazing original condition!

Hey there, can you clarify the specs on your truck? That part number didn't match for the search I did on 1993 F150, maybe because I don't know the engine/tranny combo. :)

Welcome to the forum!

Everybody needs a hunting and family truck, lol. You are like me, I can't stand to pay someone to do something I can do myself and it allows me to get things done just they way I want them. Nice ride!

Welcome! Took a look at the the pics of your truck, beautiful!

That is just an absolutely beautiful truck, can't believe the great condition!

I've never done anything that old but I especially love those 1st and 2nd gen trucks. Post up some pics when you get a chance!

Welcome to the forum!Family projects are good times and make the best memories!Post up some pics!

Welcome! Have you got a project vehicle? Love to see it!

Welcome to the forum!Great truck, can't wait to see some pics!

I have no experience with the LMC conversion so I'm afraid I can't help with troubleshooting it specifically.To do the conversion on our truck, I snagged a salvage yard switch and harness from an early 80's truck and it went in pretty easy. As I recall there was a dedicated ground wire and...

Always had a soft spot for gen 5 trucks and this one is a beauty!

Good looking truck! My first pickup looked just like that, same color and everything but was a '71, 240 i6, and three on the tree.Good luck with your upgrades!

Happy belated birthday!

Looks great!

Beautiful truck, super straight!Tell us more!

Glad the updates are happening. I've seen a couple of my favorite forums go down for good because the platform wasn't up to date and spammers made it miserable to participate.

This truck didn't come with air so we added a unit from Nostalgic A/C in 2015, runs R134a.

I like how you started out with the important stuff(stereo), lol.You keep checking things off the list, glad you are getting things done!

A/C wasn't cooling so I added freon, much better!