Question about 1965 Ford Mustang

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Engine surges, and almost dies with throttle advance

Just bought the car (65 mustang, 2 bbl 289ci) and in the 3 days of driving it has developed a surge when at idle. When throttle is advanced in rapid manor it almost dies. Not sure if there is a vacuum leak, it is certainly running rich...mixture screw or changing timing didn't seem to have an effect on how the eng idled(that confused me). Any ideas? Also, this car has pwr steering and AC. How do you turn the eng slowly to see/measure the gap in the points? I can't manually turn the motor over like I can on my 289 in my Cougar

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1965 ford falcon 289ci runs rough rebuilt carb, remove plug wires no change. pts and plugs new, what to ck next?

Posted on Sep 06, 2013

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Hello;
Well congratulations on your Mustang!
First the surging. Check the carb for vacuum leaks. The original Motorcraft carbs have a stud for the air cleaner and it must be installed. Check all the screws. If the idle mixture screws have no effect it is time for a rebuild. I believe there is a vacuum leak at the manifold or carb. Check that the trans modulator is hooked up and that the pipe is not cracked.
To turn the engine over to adjust the points, take a screw driver and jump the solenoid. You can also use a remote starter switch jumping from the + terminal and the second far right post. If you have a dwell meter, you can continually crank and adjust the points as it cranks. Feeler gauge is .016 and dwell will be 30 degrees. Then set timing. Hope it helps;
Thanks;
Rich
RPM Northwest

Posted on May 19, 2009

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Get a remote starter button at kragen and connect it to your battery and solenoid. try to hold your rpm to approx. 2000 rpm and at the same time choke the carb. with a rag just before the motor wants to die, pull the rag away fast, do not let the motor die!!! this will **** any debri from the carb. jets.remember to maintain 2000-2500 rpm while doing this...maybe more than once.g.l.

Posted on May 19, 2009

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Posted on Jan 02, 2017

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1 Answer

My 65 mustang stalls whenever i stop then it starts right back up


Hello Larry,

Without the car running... You should be able to open
the throttle.. and literally DROP it back to idle...

Observe the action of the THROTTLE RETURN
DASH-POT
T should visibly SLOW the RETURN
of the throttle linkage like a door closer...

If you do not SEE the slowess... the dashpot
should be replaced (they are getting SCARCE).

SIX CYLINDER (EXAMPLE (only))
http://www.ebay.com/itm/NORS-65-67-MUSTANG-64-67-MERCURY-COMET-FORD-FAIRLANE-FALCON-DASH-POT-C2DZ9B549A-/142309387430?hash=item21224ceca6:g:kE8AAOSwo4pYmKnd&vxp=mtr


You will need to have the THROTTLE RETURN DASH-POT
on your (unspecified) carburetor
tested and adjusted... and the IDLE SPEED correctly set.

Idle Speed and a slow rate of RPM reduction is
critical to the proper function...

Some LESSOR "mechanics" will attempt to raise the
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DASHPOT... This will PROFOUNDLY exacerbate
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Throttle return dashpot (various pictures)
Go to Bing homepage

example DASHPOT (six cylinder)
NORS 65 67 MUSTANG 64 67 MERCURY COMET FORD FAIRLANE FALCON DASH POT...

example 1968 302/5.0L: Falcon, Mustang 2BBL carb
Carter 202 737 Carburetor Dashpot Ford 2 BBL Carburetors Replaces D7ZZ...

Hope this helps

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