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woitw
User
Sep 18, 2009, 3:50 PM
Post #1 of 8
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83 dodge ram lacks power
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'83 dodge ram, 225 slant six, one barrel holly carb. engine idles fine ,but when i hold the brake and
put the throttle all the way down in drive the truck just bogs down.
smells like its getting plenty of fuel,i've adjusted the air needle seat in and out and cant get any improvement.
slowly give it the gas while rolling down the road,and it will pick up speed eventully .
doesnt backfire the book says 16 btc, distrib wont turn that far, only 12 btc
carbs been rebuilt twice, once lately. new fuel filter ,clean fuel
i just dont know.
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Hammer Time
Ultimate Carjunky
/ Moderator
Sep 18, 2009, 4:42 PM
Post #2 of 8
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Re: 83 dodge ram lacks power
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Is the accelerator pump giving a full steady stream when the throttle is opened slowly?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Sep 19, 2009, 5:36 AM
Post #3 of 8
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Re: 83 dodge ram lacks power
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woitw
Look for accel pump action at Hammer said. Most stuff was adjustable on that carb. You say you can't turn dist to get proper timing then it should be able to be removed and put back one tooth such that you have the right range.
Also: Even the slant six can eat timing chains when older! Check how many degress of lash it has no to exceed about 5 degrees.
Idle mix screw(s) should be happy at about 2.5 to 3 turns out from bottom and shouldn't be messing them if idle is ok now,
T
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woitw
User
Sep 19, 2009, 6:27 AM
Post #4 of 8
(3739 views)
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Re: 83 dodge ram lacks power
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accel pump delivers no fuel if moved slowly, or very little at end of movement
good stream if moved quickly with engine off
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Hammer Time
Ultimate Carjunky
/ Moderator
Sep 19, 2009, 7:30 AM
Post #5 of 8
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Re: 83 dodge ram lacks power
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Sounds like some carb problems. The accelerator pump at the least is not working properly.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Sep 19, 2009, 2:39 PM
Post #6 of 8
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Re: 83 dodge ram lacks power
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Hard to add to Hammer but it hasn't stopped me yet :-)
Have you checked for exhaust restriction? An easy way is to watch intake manifold vacuum at idle and again at no load ~2,000 RPM and it should be the same roughly.
If way off loosen a pipe (pre-converter) and drive it - it all improves just for the test a restriction can cause a ton of issues - carbs get confused!!
T
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woitw
User
Sep 21, 2009, 2:42 PM
Post #7 of 8
(3713 views)
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Re: 83 dodge ram lacks power
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bad gas dirty tank
dropped and cleaned tank used fresh gas and chemtool b12 ,new filter
cleaned and rebuilt carb
thanks for the help
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Sep 21, 2009, 5:55 PM
Post #8 of 8
(3708 views)
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Re: 83 dodge ram lacks power
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Thanks for follow up on the fix,
T
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