1983 351 windsor issue..
Thread Starter
|
Elder User
Joined: Feb 2010
Posts: 565
Likes: 0
From: naples, fl
1983 351 windsor issue..
so whether im driving, or in my yard if i jump on the gas the motor revs up about 500 RPM, stumbles, then takes off. iv checked EVERYTHING and i cant come up with why its happening..i replaced..oil, plugs, wires, dizzy, rotor, cap, coil, and it made it ALOT better but its still bad..before it would stumble and die...oh and the timing is 1* higher then OEM and i don't believe that 1* can make it this bad..
also im wondering what i can do to the motor (or go diesel) for the best torque..cause the bloody truck weight 3.5 tons empty i want alot of torque so that i can get up and go
also im wondering what i can do to the motor (or go diesel) for the best torque..cause the bloody truck weight 3.5 tons empty i want alot of torque so that i can get up and go
Thread Starter
|
Elder User
Joined: Feb 2010
Posts: 565
Likes: 0
From: naples, fl
well..the thing is its only from a stop, once the motor gets above 1650 RPM its perfectly fine and it will up to 4k lol thats where i shift the auto trans cause i dont wanna rev over 4k since i have NO idea what the RL is on the truck...
Lead Driver
Joined: Sep 2003
Posts: 7,014
Likes: 207
From: SoCal
I'm also interested in this, as I'm having a similar problem with my 302, 600 cfm Holley vacuum secondary. On the one hand, I think it's running too rich, as I often don't need to set the manual choke to start it from cold, and the plugs have black soot on them. But I tried changing the accelerator pump cam settings, but it doesn't change the response; there is a stumble from idle when I goose the throttle, which makes me think that there is a temporary lean condition. Still puzzled.
Lead Driver
Joined: Sep 2003
Posts: 7,014
Likes: 207
From: SoCal
Thanks Bashby,
I should have mentioned that I do see the streams shooting out when I tap the throttle lever. I do wonder about that as well. I had to clean out the carb of a lot of gummy build-up, including around the little check ball in the accelerator pump. This required disturbing a little. The rebuild instructions specify some kind of clearance between the ball and the cavity it sits in, but I've never been able to verify that. So I wonder if the pump shot is coming in too late, and I should really try to properly set that piece of metal that holds the little check ball in place.
I should have mentioned that I do see the streams shooting out when I tap the throttle lever. I do wonder about that as well. I had to clean out the carb of a lot of gummy build-up, including around the little check ball in the accelerator pump. This required disturbing a little. The rebuild instructions specify some kind of clearance between the ball and the cavity it sits in, but I've never been able to verify that. So I wonder if the pump shot is coming in too late, and I should really try to properly set that piece of metal that holds the little check ball in place.
Trending Topics
Thread Starter
|
Elder User
Joined: Feb 2010
Posts: 565
Likes: 0
From: naples, fl
the carb is clean, and i have 4 jets of gas not 2, its a 4 barrel (i was told) 850 CFM i have a 750 CFM edelbrock im gonna put on after rebuilding it and getting an adapter..and my plugs are the perfect tan color
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Lead Driver
Joined: Sep 2003
Posts: 7,014
Likes: 207
From: SoCal
That sounds like a double-pumper. I've read that they can be tricky to set up. You need to synchronize the pump shot with the opening of both throttle plates, and they are all activated by hard linkages.
My vacuum secondary opens up on overall flow rates, so it does not use a pump that side.
My vacuum secondary opens up on overall flow rates, so it does not use a pump that side.
Thread
Thread Starter
Forum
Replies
Last Post
DentsideCurtis
1999 - 2003 7.3L Power Stroke Diesel
7
Nov 8, 2016 10:36 AM
MTNTIME
1999 - 2016 Super Duty
2
Dec 3, 2015 02:20 PM
spinge
6.0L Power Stroke Diesel
26
Dec 19, 2009 11:34 AM
1983, 351, 351w, 351windsor, accelorator, carburetor, f350, ford, line, parts, pump, specs, stumbles, torque, windsor
