Bad miss under load
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Joined: Feb 2016
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Bad miss under load
My ford f 350 has a bad miss under load but once it gets going it goes away. I've changed the spark plugs, wires, button, just put new carb on it did not a just it. It also sat for about 4 years any ideas
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
I would have said ignition, but you changed all of that but the distributor cap. Maybe do that? What about timing? Too much can cause a miss under load.
So, that leaves fuel and compression/valves. Let's do easy first, meaning fuel, as it is most impacted by sitting. Have you driven enough to run most of the fuel out and refill? Today's gas with alcohol goes bad pretty quickly.
So, that leaves fuel and compression/valves. Let's do easy first, meaning fuel, as it is most impacted by sitting. Have you driven enough to run most of the fuel out and refill? Today's gas with alcohol goes bad pretty quickly.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Wow! Glad that was brief or I'd have gotten lost in the run-on sentence.
Anyway, I had fits getting the dizzy loose on one of my M's. It took soaking in PB Blaster for several days plus two pry bars to get it to come loose. But, before you do that check to see where your timing is set. It may be fine and you don't need to get the dizzy loose.
Anyway, I had fits getting the dizzy loose on one of my M's. It took soaking in PB Blaster for several days plus two pry bars to get it to come loose. But, before you do that check to see where your timing is set. It may be fine and you don't need to get the dizzy loose.
Postmaster
Joined: Mar 2011
Posts: 2,698
Likes: 7
From: Taxachusetts
First, run it up to operating temp. Take off the hold down and spray some Pb blast around the base.
If you don't care about vice grip teeth marks, clamp the vice grips very securely on the shaft, giving yourself some room to smack the vice grips with a beater.
Go easy on beating the vice grips...left, right, left, right, etc. Might take a while but it works for me.
If you don't care about vice grip teeth marks, clamp the vice grips very securely on the shaft, giving yourself some room to smack the vice grips with a beater.
Go easy on beating the vice grips...left, right, left, right, etc. Might take a while but it works for me.
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