76 f250 high boy
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Junior User
Joined: Mar 2006
Posts: 84
Likes: 0
From: pa
76 f250 high boy
I've had this truck for 16 years its my 3rd ford truck since i've been driving.Here's whats going on.About 5 years ago I had some work done on the original engine( 360) the mechanic messed up the intake he replaced it with one from a 352. Looking back thats when my problems started.
It would load up and foul the plugs when I first started it. Only when it was cold outside, Thats right when the thermometer droped below 40 It wouldn't idle. For the next 2 years this is what I did to try and fix it.
New ignition controle module
New plugs, wires, cap, rotor
New distributer
New 600 Holley carb
Finally remanufactured 390 engine,but put the 352 intake on, and it still won't idle when its cold out.It has to be the intake!
Now I think the exhaust valves are sticking open in #'2 and 5cylinder I posted a thread on the trouble shooting forum about that.I'm new here and I don't know if I'm posting right.I would certainly appreciate any help.Thank you, Craig
It would load up and foul the plugs when I first started it. Only when it was cold outside, Thats right when the thermometer droped below 40 It wouldn't idle. For the next 2 years this is what I did to try and fix it.
New ignition controle module
New plugs, wires, cap, rotor
New distributer
New 600 Holley carb
Finally remanufactured 390 engine,but put the 352 intake on, and it still won't idle when its cold out.It has to be the intake!
Now I think the exhaust valves are sticking open in #'2 and 5cylinder I posted a thread on the trouble shooting forum about that.I'm new here and I don't know if I'm posting right.I would certainly appreciate any help.Thank you, Craig
More Turbo
Joined: Dec 2002
Posts: 705
Likes: 2
From: Halifax, NS
Did you make sure all the heat stove and choke heat source, (heater hose beside the choke pull-off spring housing, etc) are set up correctly?
I don't think the intake has a problem, make sure your idle mixture screws are adjusted properly as well.
use a compression tester to determine if you have valve troubles, vacuum gauge with a guide to interpreting it's readings will help you determine if valves are stuck.
I don't think the intake has a problem, make sure your idle mixture screws are adjusted properly as well.
use a compression tester to determine if you have valve troubles, vacuum gauge with a guide to interpreting it's readings will help you determine if valves are stuck.
More Turbo
Joined: Dec 2002
Posts: 705
Likes: 2
From: Halifax, NS
does it have an automatic or manual choke?
have you inspected it all to make sure A) it's all still there (heheheh)
B) It's operational
Also, what about all your heat stove / choke pull off gear?
Will the engine idle badly when it's at operating temperature, or just when it's still cold?
have you inspected it all to make sure A) it's all still there (heheheh)
B) It's operational
Also, what about all your heat stove / choke pull off gear?
Will the engine idle badly when it's at operating temperature, or just when it's still cold?
