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Author
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Topic: carb or ignition problem on 289?
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irishmustang
Journeyman Posts: 25
From: Ireland
Registered: Mar 2005
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posted 05-29-2006 06:54 AM
 
ok, hope someone can point me in the direction of where to start on the one.68 289 auto, MSD ignition, with an edelbrock carb, 4 barell, maybe a 600cfm, not all that sure. Was driving along fine and it when I started slowing down I was losing power, then it would come back then lose it (at idle) again, go to the show, had a look uder the hood: the left mixture screw made no difference to the running, right worked as expected and there was a sound of like intermittant metal clicks (most of us thought it was fluid). Float tanks were fine. We could get it so it would run at about 3000rpm at idle, but with a lot of hesitation, cruising was fine and on the way home, pulled in to find the coil had died (boiling away it oil) and replaced it, but that made no difference. Drove home with it fine at cruising speed, but slowing down, or ideling I'd keep getting "bursts" of power, and then nothing. Any ideas
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Scott H
Gearhead Posts: 1480
From: Chicago area
Registered: Mar 2005
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posted 05-29-2006 08:25 AM
I would lean towards a carb problem, since you said adjusting one needle made no difference. I think there is some junk in your primary circuits.I would remove the carb (so little parts don't get lost down the engine). Then remove the top of the carb and use a can of aerosol carb cleaner with a squirt tube on it to flush out the little passages. Maybe even remove the idle misture needles and blast some cleaner thru there. Make sure you wear safety glasses - that carb cleaner can backfire out of those little holes.
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fastford34
Gearhead Posts: 1299
From: penna
Registered: May 2002
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posted 05-29-2006 09:18 AM
i also believe it is the carb. check the fuel filters.
keep us posted on what you find.------------------
34 coupe powered by 351 c 4v
keith
it`s nice to be important but more IMPORTANT to be nice.
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irishmustang
Journeyman Posts: 25
From: Ireland
Registered: Mar 2005
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posted 05-30-2006 03:26 AM
Thanks very much, I'll take the carb off, clean it out and let you know how I get on, probably take a few days to get around to it.
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irishmustang
Journeyman Posts: 25
From: Ireland
Registered: Mar 2005
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posted 06-02-2006 06:55 AM
Think I may have found the problem, haven't tested it yet. Took the carb apart and found a piece of silicone lodged in the pipework for the left jet. I seems to be from the cap that was covering on of the vacuum ports. There was a lot of general gunk in the carb too as the last owner put in the fuel filter backwards!!
Let ye all know for definate whn I fire it up over the weekend
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sigtauenus
Gearhead Posts: 3969
From: Va Beach
Registered: Jun 2000
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posted 06-02-2006 08:39 AM
quote:
Originally posted by irishmustang:
There was a lot of general gunk in the carb too as the last owner put in the fuel filter backwards!!
DOH! Sometimes I wonder how Mustangs have managed to last as long as they have with all the stupid things previous owners have done.
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johnmustang
Gearhead Posts: 6748
From: British Columbia , Canada
Registered: Nov 2001
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posted 06-02-2006 08:59 AM
quote:
Originally posted by sigtauenus:
DOH! Sometimes I wonder how Mustangs have managed to last as long as they have with all the stupid things previous owners have done.
I really wonder about the same thing for all of human kind, we really are a stupid bunch. ------------------
JOHN
65 FASTBACK 2+2
87 TAURUS WAGON
03 F150 XLT SUPER CREW 4X4 SHORT BOX
Member: PACIFIC COAST MUSTANG ASSOCIATION
Member:Vancouver Island Mustang Association
M&M #1710
65 FASTBACK
2003 F150 XLT SUPER CREW 4X4
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rmousir
Gearhead Posts: 1124
From: Amelia, Ohio
Registered: May 2003
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posted 06-02-2006 10:55 PM
quote:
Originally posted by sigtauenus:
DOH! Sometimes I wonder how Mustangs have managed to last as long as they have with all the stupid things previous owners have done.
I am the current owner and I do dumb things with the car all the time. I figure I will learn someday.
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fastford34
Gearhead Posts: 1299
From: penna
Registered: May 2002
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posted 06-03-2006 06:58 AM
we all have our "moments" ! LOL
especially when we are in a hurry & excited about getting the project done to fire it up & go!!!!  ------------------
34 coupe powered by 351 c 4v
keith
it`s nice to be important but more IMPORTANT to be nice.
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68 Coop
Gearhead Posts: 5847
From: Mesquite, NV. 89027
Registered: Oct 2004
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posted 06-03-2006 07:43 AM
quote:
Originally posted by rmousir:
I am the current owner and I do dumb things with the car all the time. I figure I will learn someday.
Inexperience can NOT be compared to plain stupidity Richard. You are still learning, some people need taken out at birth just to be done with them.------------------
William
The easiest way to find something lost, is to buy a replacement. 68 Coupe
289
C4
3:55's/Trac-Lok
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