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Path: utzoo!decvax!ittatc!dcdwest!sdcsvax!sdcc6!ix394
From: ix394@sdcc6.UUCP (ix394)
Newsgroups: net.auto.tech
Subject: Re: hesitation on acceleration
Message-ID: <2453@sdcc6.UUCP>
Date: Tue, 4-Mar-86 19:52:40 EST
Article-I.D.: sdcc6.2453
Posted: Tue Mar  4 19:52:40 1986
Date-Received: Thu, 6-Mar-86 03:39:05 EST
References: <267@birtch.UUCP>
Distribution: na
Organization: U.C. San Diego, Academic Computer Center
Lines: 37
Summary: Check distributor governor weights

In article <267@birtch.UUCP>, ken@birtch.UUCP (Ken B) writes:
> I have a '79 Plymouth Champ, with a 1600cc engine.  I had recently
> had the carburator rebuilt.  The car ran fine for about a month,
> then start to hesitate while accelerating. I.E. in second gear, at about
> 35 MPH (about 3,000 rpm) and press the accelerator to the floor.  The
> car would act like it was about to die, then would accelerate. 
> 	I tuned it up (replaced plugs, points, condenser, plug wires,
> cap and rotor, and the coil {they said the coil was weak})  It still
> hesitates like it did before.  (it hesitates in all 4 gears, but is
> most notible in second).
> 	Many Thanks,
> 	Ken Brown

Check the distributor a little more closely, as you may have one
or both of the governor weight springs broken.  This kills the
centrifugal advance and has the effect you describe on
accelleration.  This has occurred on two family Colt/Champs of
79-80 vintage.  (Expect to pay about $50 from Chrysler for a
replacement governor assembly.)  You can check whether you are
getting any centrifugal advance with a timing light.  Cut off
the vacuum advance and rev the engine to about 2000 rpm.  You
should get about 20 degrees or more of advance over the idle
reading.  If you get no advance, then the governor is the
problem.

Another general cause of accelleration hesitation or stumble is
a vacuum leak somewhere below the throttle plates.  Check all
hoses taking vacuum off the intake manifold, as one could be 
cracked and causing the problem.  

As a final word of advice, find another place to get your car
worked on, as it sounds like the boys at the ``carb shop'' are
just guessing.

		Chuck Cobleigh
		EECS Dept. C-014
		U. C. San Diego