66 sputters with acceleration
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Cross-Country
Joined: May 2003
Posts: 54
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From: Tallahassee
66 sputters with acceleration
Haven't driven my 66 in a few months while I was in the process of rewiring it.
I did crank it up about a month ago and everything seemed fine.
Today after placing some carpeting and replacing the seat I cranked her up and upon acceleration the engine sputters and "coughs" and won't reach full throttle without dying.
I plan on replacing plugs etc. but any advice is greatly appreciated.
I did crank it up about a month ago and everything seemed fine.
Today after placing some carpeting and replacing the seat I cranked her up and upon acceleration the engine sputters and "coughs" and won't reach full throttle without dying.
I plan on replacing plugs etc. but any advice is greatly appreciated.
Lead Gopher
Joined: Aug 2012
Posts: 10,049
Likes: 1,603
From: Seattle
Another member just mentioned sputtering with their truck. On the off chance it's the same thing - air filter in that case. But there can be a few reasons for it. Clogged fuel filter after sitting sediment can restrict flow. Weak fuel pump - diaphragm could be going bad. Stale fuel or varnish. If still using a points system worn points or incorrect gap, weak coil, loose or corroded plug wires, distributor cap/rotor wear or carbon tracking. Stuck mechanical advance weights or vacuum advance not functioning. Grounding issues from recent rewire. Clogged muffler or collapsed baffle. Just some quick ideas.
About to feel foolish - Ford Truck Enthusiasts Forums
About to feel foolish - Ford Truck Enthusiasts Forums
See A Man About A Horse
Joined: Apr 2003
Posts: 4,908
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From: Mariposa, Ca.
“ 66 sputters with acceleration “
I’m 65 now. As a young man, I had the same problem. But after being married for over 4 decades, I’ve now got that under control, more or less.
I’m 65 now. As a young man, I had the same problem. But after being married for over 4 decades, I’ve now got that under control, more or less.
Last edited by ibuzzard; Oct 18, 2025 at 10:28 AM.
Lead Gopher
Joined: Aug 2012
Posts: 10,049
Likes: 1,603
From: Seattle
Never know. 66 may hold something new in store for you. Life is a fickle endeavor to say the least...
Logistics Pro
Joined: Jun 2018
Posts: 3,551
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With today's gas that evaporates and boils off easily I would say your carb needs to be cleaned. For my truck if it sits for a week it takes 15-30 seconds of cranking before fuel gets to the carb. Now if it sits, I fill the cab thru the vents before cranking. Works every time.
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sammycooks
1961 - 1966 F-100 & Larger F-Series Trucks
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Feb 27, 2011 02:34 PM
