Engine won't start
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Engine won't start
This is probably a stupid question from a knowledge deprived newbie. My wife has a 1976 F-100 2WD with a 6 cylinder. The truck belonged to her deceased first husband. Years ago he was using it to pull a stump when according to the kids there was a loud pop (maybe backfire) then the truck died and never started again. Motors turns freely, oil still looks good. Could this have been timing gears? Worse case scenario? Cost for a engine rebuild or a new one? I hate to see it just sitting. Great body, almost no rust, and good paint for a truck that has been sitting for 17 years.
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From what I've been told. It turned over but never started. I have not tried yet because someone has pilfered some parts. We are several hours away from the property where it's sitting and I was very limited on tools. I did turn the engine by hand and it is not locked up.
Postmaster
Joined: Sep 2013
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From: Pasadena, Ca
Backfire might have blown the power valve, which will give too much gas and wont start. Maybe a lot of things. If it has sat for a long time, syphon the old gas out and put as much new in as you can. At minimum, Google how to rebuild a carb, let's say a Motircraft 2150. Take note of the power valve. You can remove the carb with a simple socket, extension and ratch, probably size 7/16. Then take thd carb back to where ever you call home.
I doubt you need to rebuild the engine.
And maybe there wasnt a problem at the carb, but after sitting so long, the carb is a problem now.
I doubt you need to rebuild the engine.
And maybe there wasnt a problem at the carb, but after sitting so long, the carb is a problem now.
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Thanks for the reply. Heading back next weekend to put together a parts list. I'll pull the carb and see what I can do. Would pull it home but the rearend is one of those pilfered parts. Got a replacement lined up. My mother in law living on the property now so I think things will be safe.
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Backfire might have blown the power valve, which will give too much gas and wont start. Maybe a lot of things. If it has sat for a long time, syphon the old gas out and put as much new in as you can.
At minimum, Google how to rebuild a carb, let's say a Motorcraft 2150. Take note of the power valve.
At minimum, Google how to rebuild a carb, let's say a Motorcraft 2150. Take note of the power valve.
2150 is a 2V carb used on 1975/79 V8's.
Post Fiend
Joined: Apr 2002
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From: Waterloo, Iowa
Old gas has long turned to goo and sludge by now. Tank, lines, fuel pump etc need to be cleaned out or replaced. For maintenance/test purposes when troubleshooting the motor rig up a boat tank or something to gravity feed the carb after that gets cleaned up. Old stale fuel will screw things up, it will burn but turns to varnish/glue once the engine cools down.
Check that the engine turns freely with valve covers and distributor cap removed. What you want to look for is the rotor bug turns and is lined up correctly when at TDC on the #1 piston compression stroke, and all the valves are moving free. It could be the roll pin on the distributor gear sheared, for example.
Check that the engine turns freely with valve covers and distributor cap removed. What you want to look for is the rotor bug turns and is lined up correctly when at TDC on the #1 piston compression stroke, and all the valves are moving free. It could be the roll pin on the distributor gear sheared, for example.
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Tuned
Joined: Sep 2017
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From: Warren, Texas
Since it's gear to gear for timing, I suppose you would have to actually break something if the problem was timing related. With that being said, and someone correct me if I'm mistaken, you could turn the engine over and watch the rotor in the distributor. If timing gears are intact, the rotor will spin. If it does not, then it's definitely needs new gears.
Also, if timing is the issue, wouldn't it sound kinda funny as it's being cranked?
Just a quick look at O'Reilly's... a new 300 ci long block is 1300 to 1600 dollars.... Just depends on how much time, effort, and money you want to put into repairing the old one.
Sitting 17 years? Oh boy I bet that gas is RANK! You could bring a 2 gallon gas can and several feet of 3/8 inch fuel hose with you and hook it up to the fuel pump for now.
Also, if timing is the issue, wouldn't it sound kinda funny as it's being cranked?
Just a quick look at O'Reilly's... a new 300 ci long block is 1300 to 1600 dollars.... Just depends on how much time, effort, and money you want to put into repairing the old one.
Sitting 17 years? Oh boy I bet that gas is RANK! You could bring a 2 gallon gas can and several feet of 3/8 inch fuel hose with you and hook it up to the fuel pump for now.
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