Jay,
Check the intake manifold bolts. My American did that and tightening the
bolts solved the problem.
Matt
At 06:12 PM 10/31/2004 -0500, you wrote:
Hey Guys, i have a 66 American with the 232/2bbl engine. I have set the
timing, set the idle speed at 700 rpm in neutral/ 550 in drive. The engine
has new plugs and points, doesn't appear to have any vacuum leaks. At the
550 rpm speed the engine has a rapid vibration which is quite annoying.
The vibration mostly stops when i speed the engine up above the idle. I
have replaced the tranny mount which was dissolved from tranny fluid
getting on it before i got the car. Could the engine mounts be so old and
stiff that they won't absorb even the slightest vibration and transmit it
to the frame? I had a 65 American with a 232/2bbl when it was new in 65
and i don;t remember it being anything but smooth idling. The engine runs
smoothly as far a vacuum gauge shows, no fluctuations due to worn valves
or rings. The engine doesn't smoke and has 120k miles on the odometer.
Someone did put the oil kit from the side of the block up into the valve
cover as suggested in a service bulletin. I know that has nothing to do
with the idle. Just mentioning it as I hadn't seen this done to many 232
engines. I didn;t mention it but the engine has new plug wires also.
Any ideas?
Jay in Central FL.
mhaas@xxxxxxx
Cincinnati, OH
http://www.mattsoldcars.com
1966 Rambler Rebel
1968 Rambler American sedan
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