Need some help
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Junior User
Joined: Dec 2011
Posts: 77
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From: Phoenix
Need some help
I have a 69 F-100 with the original 360 V8 and Holley 4 barrel carb. Lately it has been giving me some issues. I was driving it one day, stopped for gas. It started up with no problem. Left the gas station and not a half mile down, it died on me. It took me a good 5 minutes to get it running again. Didn't quite again, that time. Next time I drove it, I got to where I was going and shut it off. When I went to leave the store, it wouldn't start. Took about 5 minutes to start again. When I try to crank it, it will turn over, just won't ignite. If I press on the gas, when I'm cranking it, it will start, engine will rev up then die. I've poured gas down the carb and it didn't help at all. I changed the fuel filter and fuel pump(really didn't think it would help, but they needed replacing) and of course, no difference. More or less thinking its something with it not getting spark, I changed the plugs, wires, rotor, distributor cap and coil. Still nothing. Previous owner had changed it to electronic ignition, so don't have to worry about points and the distributor is nothing special. Thinking of buying a PerTronix Flame Thrower Plug and Play Billet Distributor. Can anyone think of anything I'm missing?
Thanks for any assistance.
Thanks for any assistance.
Lead Driver
Joined: Jan 2003
Posts: 9,893
Likes: 12
From: Ohio
What electronic ignition is in it? Sounds like it might be failing.
If adding fuel does not make it start, then it is electrical.
Quick note even though it is not likely fuel, have you changed the rubber line at the pump and the line back under the cab that comes from the tank to the frame line? Those can fail/collapse.
If adding fuel does not make it start, then it is electrical.
Quick note even though it is not likely fuel, have you changed the rubber line at the pump and the line back under the cab that comes from the tank to the frame line? Those can fail/collapse.
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Junior User
Joined: Dec 2011
Posts: 77
Likes: 0
From: Phoenix
Yes it was a familiar gas station. It's only actually stalled out on me twice. Once was right after I left the gas station. The other time was a week or so later. When the engine is cold, I have no problem starting it. Like first thing in the morning. 1 press on the gas and up she starts. Its after it has been running and I shut it off, that is when I have difficulty to start it back up again.
I'll have to check the distributor, this weekend, to see what brand it is. Is there a way to test it?
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Laughing Gas
Joined: Feb 2016
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From: The Hotel California
Countryford83 do you have hedders on your truck.? years ago i had a 69 f-100 with a 360 tott. when it was cold like sitting over night it would start on the first try. when i would shut it off then try to start it. it would not. i had to wrap the starter and that fixed my problem. just some thing else to check.
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Thread Starter
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Junior User
Joined: Dec 2011
Posts: 77
Likes: 0
From: Phoenix
Countryford83 do you have hedders on your truck.? years ago i had a 69 f-100 with a 360 tott. when it was cold like sitting over night it would start on the first try. when i would shut it off then try to start it. it would not. i had to wrap the starter and that fixed my problem. just some thing else to check.
I do have headers, but they have been on the truck, since before I bought it in 2010. This issue I've been having, only started last month. Plus when it gets hot and I go to start it, it will crank over, just not start. So basically the starter is working properly. Just something isn't igniting.
Cargo Master
Joined: May 2015
Posts: 2,350
Likes: 7
From: Garland, Tx
I believe he meant this more as a statement than a question. When you short shot these FEs, they have a tendency to vapor lock. Meaning, the fuel get hot in the carb and turns to vapor before it gets to the combustion chamber.
Next time you short shot to 7-11 and grab beer, before you crank the truck hold the pedal to the floor for several seconds. By opening the carb butterfly you are letting it "air out". Hit the key and she should crank in about 6 seconds.
Take 2 and let us know how that works out.
Next time you short shot to 7-11 and grab beer, before you crank the truck hold the pedal to the floor for several seconds. By opening the carb butterfly you are letting it "air out". Hit the key and she should crank in about 6 seconds.
Take 2 and let us know how that works out.
Cargo Master
Joined: Oct 2011
Posts: 2,251
Likes: 304
From: Kenner,La.
No start
Just to be sure check the voltage at the +/bat side of the coil when the engine is cold while cranking, then again when the problem is present with a warm engine. Both times you should have 12 volts in cranking mode. Or when the problem happens again connect a jumper wire from the battery to the +/bat of the coil to see if it starts.
Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
An easy test is to check not only for spark but the quality of the spark. Keep a spare plug with you. When you have the time or when trouble occurs just pull a plug wire and install the spare plug into the wire and ground it. Check for a good hot, fat, bluish-white spark. If you disconnect the coil wire at the distributor the cable end terminal should be able to jump at least 1/2" open air with a strong bluish-white spark. Red or yellow orange in either is No Good. Inside the combustion chamber under piston compression a weak spark won't be able to jump the plug gap. Keep in mind too, a mistuned engine that won't start is REALLY tough on the battery, solenoid, and starter. Kind of like a torture test. Give the battery a break by putting it on a slow charge overnight, and every time you flog it till things get sorted out. That way you won't have to add "new battery" to the growing list of parts receipts. Let the starter rest 10 minutes for every 20 seconds of crank time, they will eventually get smoked and burn the insulation off the windings.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
2X. I think it prolly in the ignition module. Especially if it's an aftermarket one. And it is Ford Duraspark electronic ignition. Post pics of your ignition system.
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