quirkdiggler

Wtf is a replacement my only option? Why did they do this?

Good old Bill

Sure would be nice to know what you are driving!

KedwinH

Yep, year and motor would help a lot.

quirkdiggler

86 f150 straight 6!

Scraptor

Probably a stuck float , try smacking it with a hammer, lightly.

Good old Bill

Remember something about the guys taking a small hack saw and cutting a notch in the base by the plug where the mixture adj screw is hidden. Then they would take a small punch to remove the plug to expose the adjustment needle. Its a tamper proof thing that Ford did to try to make that horrible emission engine comply. Don't get your fur up, the engine is great, just not a green engine, just like the 360/390 engine family, not very fuel efficient.

quirkdiggler

Ok I'm gonna try both of those tapping first then the screw access secondly.. We tried using a screwdriver to roll the shaft over behind the screw just buy pushing up against it but I think it actually think it may have been a tube casing the adjustment screw shaft.. Thank you bill for at least giving me the answer to the mystery of why this is designed as such haha was driving me batty

quirkdiggler

Ok so I pursued what I thought was the adjustment screw but it wasn't I don't think. It had a cover over it but it was pretty much just a structural bolt, when I turned it one way it turned the throttle mechanism up and revved the engine, wouldn't turn the other way because that was end of the line, no where to go below idle... Does anyone know exactly where the lean/rich adjust actually is? The person who told me it wasn't adjustable obv was looking at the wrong screw so maybe it is adjustable???

82f100

Mine is in the front on the bottom. Really hard to see and hard to get to. There is a few you tube vids out on how to do it.