hard to start!!
Thread Starter
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New User
Joined: May 2003
Posts: 12
Likes: 0
From: jefferson,pennsylvania
hard to start!!
hey guys: i have a 1985 f-150 4x4 5.0 efi, the problem i'm having
is, when the truck is first started in the morning's it will start with
no problem, but after driving it for a while if you shut it off then
try to start again it won't fire, unless gas pedal is held to the floor.
i've replaced about every sensor on the engine, map, tps is used
but checks out ok. ignition module & pick-up coil are new, not sure if ais sensor is sticking internally or not; could this be the problem. also noticed a small pin hole in top of gas tank, is creating my problem? any info would be appreciated.
1985 f-150 4x4 5.0 flow-tech shorty headers (true duals/no cats)
33x12.50x15
is, when the truck is first started in the morning's it will start with
no problem, but after driving it for a while if you shut it off then
try to start again it won't fire, unless gas pedal is held to the floor.
i've replaced about every sensor on the engine, map, tps is used
but checks out ok. ignition module & pick-up coil are new, not sure if ais sensor is sticking internally or not; could this be the problem. also noticed a small pin hole in top of gas tank, is creating my problem? any info would be appreciated.
1985 f-150 4x4 5.0 flow-tech shorty headers (true duals/no cats)
33x12.50x15
Freshman User
Joined: Apr 2003
Posts: 44
Likes: 0
From: near harrisburg
hard to start!!
Have the computer checked.
I had a simular issue. It started out like yours does now. I had to flood the engine by holding the gas petal down all the way just to start. Once running it seemed fine until next time. Eventuall it progressed to cold starts. In about 2-3 months it would not start at all.
I had a simular issue. It started out like yours does now. I had to flood the engine by holding the gas petal down all the way just to start. Once running it seemed fine until next time. Eventuall it progressed to cold starts. In about 2-3 months it would not start at all.
Post Fiend
Joined: Nov 2002
Posts: 9,987
Likes: 7
From: Memphis, TN
hard to start!!
Holding the pedal down while cranking doesn't FLOOD the engine - it CLEARS a flood by telling the computer to shut off the injectors. You can pull the codes yourself and do plenty of other diagnostic procedures with nothing but a paperclip. Just search this forum for "paperclip pull the codes" and you should find the link I normally post (when I'm on my own computer). It'll tell you everything about diagnosing EEC-IV computers.
Swapping engines won't help if you can't get it to run right.
Swapping engines won't help if you can't get it to run right.
Thread Starter
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New User
Joined: May 2003
Posts: 12
Likes: 0
From: jefferson,pennsylvania
hard to start!!
forgot to mention earlier, the 351w is not injected it's carbed
it's from a '74. looks like a fairly easy swap, from what i can tell
looks like wiring harness & probably new mounts also.
was put in friends truck which was rolled over about 3x's.
didn't seem to hurt the engine, is there any specific parts i'll need
for this swap; thanks for info
it's from a '74. looks like a fairly easy swap, from what i can tell
looks like wiring harness & probably new mounts also.
was put in friends truck which was rolled over about 3x's.
didn't seem to hurt the engine, is there any specific parts i'll need
for this swap; thanks for info
