can't get 360 to start
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Elder User
Joined: Dec 2000
Posts: 581
Likes: 2
From: Somerset, Pa
can't get 360 to start
saturday I bought a 71 f-250 4x4 with a 360. and 89,000 miles
I managed to get it started and drove it off the trailer and about a 1/4 mile up the driveway into my father in law's yard where I plan on working on it. It ran ruff when cold and was tough to start. When I tried to restart it on sunday it wouldn't start it kept spitting fire out the carb. so I figured I would tune it up. I put new plugs in it, plug wires, cap, rotor, points, and condenser, as well as tearing down the carb and putting a new powervalve/neddle/seat/accelerator pump in it. oh and I cahnged the oil. I put it back together and if fired up and ran for a few seconds then I think it flooded out and stalled. then I would not start........it would pop and shoot flames out the carb and carch fire!!!!
it runs reasonably well and has power when it does run but it near impsoilbe to get started!!!!
would a bad carb cause this behaveior??? what else should I check?
I managed to get it started and drove it off the trailer and about a 1/4 mile up the driveway into my father in law's yard where I plan on working on it. It ran ruff when cold and was tough to start. When I tried to restart it on sunday it wouldn't start it kept spitting fire out the carb. so I figured I would tune it up. I put new plugs in it, plug wires, cap, rotor, points, and condenser, as well as tearing down the carb and putting a new powervalve/neddle/seat/accelerator pump in it. oh and I cahnged the oil. I put it back together and if fired up and ran for a few seconds then I think it flooded out and stalled. then I would not start........it would pop and shoot flames out the carb and carch fire!!!!
it runs reasonably well and has power when it does run but it near impsoilbe to get started!!!!
would a bad carb cause this behaveior??? what else should I check?
Elder User
Joined: Jan 2003
Posts: 730
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From: at my house
Make sure and double check the sparkplug wires for correct firing order and maybe mess with the timming by turning the distributor a hair to see if it makes a diff? other will give their input soon.Good luck.
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
I'd go through the timing order again. Sounds like you have one wire wrong, or as was said before, the timing is off. If I'm not mistaken, the firing order is 15426378.
Get out your timing light and check the timing with the vacuum advance hose pulled off the dist. and plugged. It should be around 10 degrees BTDC.
Is it a manual choke? If so, and you think it's flooded, open the choke fully and floor the gas while cranking. This should quickly clear the flooding.
I almost never have to use the choke on mine, just pump the gas 4 times, crank it, and go. If it wants to die, just keep pumping the gas.
Get out your timing light and check the timing with the vacuum advance hose pulled off the dist. and plugged. It should be around 10 degrees BTDC.
Is it a manual choke? If so, and you think it's flooded, open the choke fully and floor the gas while cranking. This should quickly clear the flooding.
I almost never have to use the choke on mine, just pump the gas 4 times, crank it, and go. If it wants to die, just keep pumping the gas.
Senior User
Joined: Sep 2001
Posts: 215
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From: Western PA
Hey John, It always started for me if I pump it about 6 times and put the choke on. Hold the peddle about 3/4 and as soon as it starts lose the choke and keep some peddle on it till it steadies out. I think there was a new set of points in the glovebox that I left but I could be wrong. Let me know if you have any other questions about blue truck. If you are going to be devoting a day to working on it I'd drive down and give you a hand if I'm not working. I work for food.
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Elder User
Joined: Dec 2000
Posts: 581
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From: Somerset, Pa
I will check the firing order and the initial timing next time I go down to work on the truck.
And ted thanks for the tip I'll let you know next time I'd going down I still have to show you that junkyard with all the old cars and trucks....in fact I still need to stop there and get that 71 bed and a fender for my 76......I hit a deer tonight going 50 MPH A pretty big one. I twisted up my NOS for bumper so now I have to try to find a good quality reproduction one and I have to get a pasender side fender. the bumper hit it and sprung it pretty bad. I could fix it but I would rather get a better one.
I "glad" this happend now rather than after I painted the truck. and I am also suprized that the deer didn't cause more damage. it didn't even damage my grill.
And ted thanks for the tip I'll let you know next time I'd going down I still have to show you that junkyard with all the old cars and trucks....in fact I still need to stop there and get that 71 bed and a fender for my 76......I hit a deer tonight going 50 MPH A pretty big one. I twisted up my NOS for bumper so now I have to try to find a good quality reproduction one and I have to get a pasender side fender. the bumper hit it and sprung it pretty bad. I could fix it but I would rather get a better one.
I "glad" this happend now rather than after I painted the truck. and I am also suprized that the deer didn't cause more damage. it didn't even damage my grill.
Lead Driver
Joined: Jan 2003
Posts: 9,893
Likes: 12
From: Ohio
When I bought my 67, it ran fair,but missed and would only go about 35 mph. It would cough and sput thru the carb. I finally got around to actually checking the firing order(after going all around it), I found that they had 3 and 6 switched around. They are next to each other, but I dont know why or how it happened. I switched them and all of a sudden it PURRED!!!!
Larry
Larry
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Elder User
Joined: Dec 2000
Posts: 581
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From: Somerset, Pa
well after getting over the flu I finally got around to going out to check on the truck.
again it wouldn't start so I pulled the plugs to check what was going on. the plugs on the uphill side were fouled(the truck it parted on a hill right now) and the ones on the downhill side were soaked with gas.......really soaked..... So I come to the conclusion that the carb is complete junk so I will have to try to find one of the spares I had in the garage.
also I ran a compression test on the cylinders on the uphill side they all cam out to be around 70 psi.....not good but I am hoping that the low numbers are due to the fact that the truck was cold (-4 out), it hasn't started in a month and the cylenders were washed with gas since I was trying to start it.
I ran a test on one the downhill side cylenders 255 psi .......this is due to all the gas setting in it though.....I didn't think of it for a split second and was like WTF!!!!!
I guess I will get back to working on it when it is warmer.
again it wouldn't start so I pulled the plugs to check what was going on. the plugs on the uphill side were fouled(the truck it parted on a hill right now) and the ones on the downhill side were soaked with gas.......really soaked..... So I come to the conclusion that the carb is complete junk so I will have to try to find one of the spares I had in the garage.
also I ran a compression test on the cylinders on the uphill side they all cam out to be around 70 psi.....not good but I am hoping that the low numbers are due to the fact that the truck was cold (-4 out), it hasn't started in a month and the cylenders were washed with gas since I was trying to start it.
I ran a test on one the downhill side cylenders 255 psi .......this is due to all the gas setting in it though.....I didn't think of it for a split second and was like WTF!!!!!
I guess I will get back to working on it when it is warmer.
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Post Fiend
Joined: Jun 2002
Posts: 13,873
Likes: 3
From: Atlanta GA
On an older carb Ford, the first thing you should always check is the fuel pump and make sure it is putting out a good amount of fuel. Many older Fords I have worked on that sat a while needed a fuel pump.
New User
Joined: Oct 2003
Posts: 9
Likes: 0
From: Pueblo West
I have only been working on cars for about 10 or so years so don't quote me if I am wrong but I believe the problem that you seem to be having with your "spitting carb" is the timing and possible an inproper point gap as has already been mentioned above. But I figured a second opinion would help convince you. Hope this helps. By the way, on my 83 Ford F-150, I had this same problem and it always seemed to be the timing.
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Elder User
Joined: Dec 2000
Posts: 581
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From: Somerset, Pa
I would like to time it but I can't if I can't get it to start....it keeps flooding really bad.....we are talking a LOT of gas with only a few cranks. Maybe I will try playing with the distributer (advancing it a bit before I try to start it) next time I mess with it.
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
I'd change the oil before you go any farther. All that gas you found is bound to wind up in the oil pan, and will thin the oil down to nothing.
I would suggest pushing it down to level ground to work on it. Makes things much easier.
If you've got the money for it, I'd suggest a new holley carb. They make an excellent 500cfm 2-barrel, or a vacuum secondary 4-barrel, depending on your intake manifold.
Those stock ford units were notorious for blowing out the power valve and flooding like you said. One backfire and it was blown out. Sounds like that's what happened.
I would suggest pushing it down to level ground to work on it. Makes things much easier.
If you've got the money for it, I'd suggest a new holley carb. They make an excellent 500cfm 2-barrel, or a vacuum secondary 4-barrel, depending on your intake manifold.
Those stock ford units were notorious for blowing out the power valve and flooding like you said. One backfire and it was blown out. Sounds like that's what happened.
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Elder User
Joined: Dec 2000
Posts: 581
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From: Somerset, Pa
I finnaly got around to rebuilding an old carb I found in the garage..... I bolted it on the 71 and it fired right up and is running really well. driving with good power and ideling nicely.
The carb that was on the truck was complete JUNK!!!!
The carb that was on the truck was complete JUNK!!!!