Difficult Start-Up

Reply Subscribe

Thread Tools

Search this Thread

Sep 23, 2002 | 11:42 PM

trinogt

Thread Starter

Cargo Master

Joined: Apr 2001

Posts: 2,364

Likes: 3

From: Eustis FL

Difficult Start-Up

Sep 30, 2002 | 04:26 PM

78RangerXLT

Senior User

Joined: Jul 2002

Posts: 145

Likes: 0

Difficult Start-Up

Hey Guys, I just put a rebuilt 351M in my truck. When i had my old 351M in there, i would go out to my truck, even in the coldest mornings (32*F) and put the pedal to the floor and slowly bring it back up and it would crank beautifully and run smooth. Now with this new engine I can reset the choke by putting the pedal to the floor and slowly bringing it back up like my owner's manual suggests and when i crank in the morning or after a more than 1 hour rest it will run smooth and great for about 3 seconds and then spit and sputter and almost die for about 3-4 minutes and then it runs fine. I was wondering if I need to adjust my choke, i have also noticed that when i take off from a dead stop agressively it will bog and almost die unless back off the pedal and hit it again. I am kinda getting dissappointed with the new engine. All help is appreciated being that i am only 16 and dont know all the old school tricks

Thanks

Sep 30, 2002 | 04:58 PM

Mil1ion

New User

Joined: Jan 2008

Posts: 0

Likes: 24

Difficult Start-Up

There are 4 positions on the carb's pump rod.
Which one is your in ?
Position #1 one is the one closest to linkage.

[font color=red]Dennis

FTE Assistant Administrator
[/font]

[link:www.ford-trucks.com/guidelines.html|Club FTE]

[link: motorhaven.autoanything.com|How YOU Can Support This Site]

http://www.clubfte.com/users/mil1ion/canada_flag_animated.gif

[link:www.clubfte.com/users/mil1ion/Mil1ion.html|My Website,"North Of The 49th"]

Sep 30, 2002 | 09:29 PM

LxMan1

Moderator

Joined: Dec 2001

Posts: 22,436

Likes: 17

From: Louisville,Ky.

Difficult Start-Up

Check your timing also.

Sep 30, 2002 | 09:33 PM

Franklin2

Moderator

Joined: Jan 2001

Posts: 56,995

Likes: 2,741

From: Virginia

Difficult Start-Up

[updated:LAST EDITED ON 30-Sep-02 AT 10:36 PM (EST)]It does sound like it could be your choke too, although if you didn't mess with anything, it shouldn't be out of adjustment. You say it runs fine after it warms up, so that's the clue to look at the choke though. Spray some wd-40 on the linkage to see if that will loosen it up a bit.

Also, does your choke have a wire going to it, and/or a pipe going to the exhaust manifold? If the pipe to the manifold is broke off, it will make the choke stay on a little longer than it should.

Oct 1, 2002 | 06:38 AM

macguyver

Posting Guru

Joined: Aug 2002

Posts: 1,214

Likes: 2

From: Minneapolis, MN

Difficult Start-Up

Sounds like the choke pull-off. That's the vacuum can that pulls the choke open just a little bit when it's cold right after it starts. If it opens too far it gets lean and tries to die, but that usually doesn't happen unless it was messed with. What usually happens is the rubber diaphragm in the can goes bad or the vacuum hose gets knocked off or rerouted and the pull-off doesn't open the choke far enough right after it starts and it will flood out. If you keep your foot in it a little right after it starts to ceep it running "til the choke warms up is it a bit better? Also some of the older ones have a little piston under the choke coil that does the same thing but I forget when Ford quit using them. Those would get carboned up and quit working. Some carb spray or penetrating oil would usually fix those up. The trick is to get the pull-off to open the choke just the right amount so it runs good. It may take a few tries to get it adjusted right because after the first time it starts, the engine is warm and you have to let it totally cool down to try it again but with a little patience it can be done.
Good luck,
macguyver

'77 F-250 Camper Special 400ci
'76 F-250 Supercab 360ci
'71 Mach I 429CJ

huct on foniks wurkt fer me

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last

Forum Jump