Jay,
Unless you have a fresh engine, a little roughness isn't out of the
ordinary. For example, the valves (seats, guides, or both) are going to be
worn which will cause roughness. Also, if there's enough wear in the
piston rings (or they've just lost tension over the years), the vacuum
signal isn't going to be as strong as it could be which will make the
engine slightly lean which can cause a little roughness. Also, if the
engine mounts are still the stock ones, they're no doubt shot by now which
will let the engine move more than it should.
There are a bunch of other things that can make it idle rough: worn
distributor, worn/bad points, carb needs rebuilt (or has a worn throttle
shaft and/or bores -- these also cause lean conditions), carboned
combustion chambers, bad plugs, bad wires, etc...
I don't recall if you've said if you're still running points or not but
switching over to a Pertronix Ignitor really smoothed my engine out at
idle.
Matt
At 07:18 AM 4/17/2005 -0400, you wrote:
I meant to say my car is NOT really rough idling, just not as smooth as i
rememebr my 65 232 idling (when it was fairly new in 1965.
Jay
----- Original Message ----- From: "Jay" <jciampi@xxxxxxxx>
To: <mail@xxxxxxxxxxxx>
Sent: Saturday, April 16, 2005 1:54 PM
Subject: Re: cracked exhaust manifold on 232
The TSM for 1966 says that the idle speed is 550 rpm (in neut ral)for all
model 6s in the American, regardless of tranny. Mine idles in neutral at
700 and drops to about 650 in drive. I am going to try the "Carbon
breakup" water method first and then a compression check. My car is
really rough idling, just not as smooth as I remember my 65 (back in 65)
idling wiht the same engine.
Jay
----- Original Message ----- From: "Matt Haas" <mhaas@xxxxxxx>
To: <mail@xxxxxxxxxxxx>
Sent: Tuesday, April 12, 2005 8:28 PM
Subject: Re: cracked exhaust manifold on 232
Jay,
You usually set the curb idle speed on a car with an automatic while
it's in drive. Did you have the intake manifold checked to make sure
it's flat? Did you follow the torque sequence from the TSB information I
posted (http://www.mattsoldcars.com/RestoreAmerican/loose_intake.shtml)?
Also, I have a much better idle now with just the intake gasket than I
did with using the combination gasket. Finally, did you try adjusting
the fuel mixture? A lean or very rich mixture can cause the engine to
run rough.
Matt
At 07:46 PM 4/12/2005 -0400, you wrote:
Boy, I changed my maniufold yesterday on my American and the darn thing
about fell apart when I unbolted it from the block. It had all kinds of
cracks, some hair-line and some quite wide and long. Car sounds a lot
quieter now but doesn;t idle any smoother.
When I set the idle in Park at a rather fast 700 rpm, when i put it in
Drive and the engine slows down, it almost gets loping and rough. I
can't seem to get a "compromise" setting that will be fairly smooth in
Drive and still not jump into gear when I take it out of Park and put
it in Drive. Any ideas what I might try with this situation?
Jay
Laek Placid, FL.
mhaas@xxxxxxx
Cincinnati, OH
http://www.mattsoldcars.com
1967 Rambler American wagon
1968 Rambler American sedan
===============================================================
According to a February survey of Internet holdouts released by
UCLA's Center for Communication Policy, people cite
not having a computer as the No. 1 reason they won't go online.
mhaas@xxxxxxx
Cincinnati, OH
http://www.mattsoldcars.com
1967 Rambler American wagon
1968 Rambler American sedan
===============================================================
According to a February survey of Internet holdouts released by
UCLA's Center for Communication Policy, people cite
not having a computer as the No. 1 reason they won't go online.
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