Yep, sounds like a stuck choke to me. Ken ’67 Crown From:
mailing-list-owner@xxxxxxxxxxxxxxxx
[mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On
Behalf Of Greg Graham My '67
Convertible just developed a strange problem. It has run fine, absolutely
wonderful, for days. I drove it to work this morning and it performed
perfectly. I had to run an errand at lunch and went out to start the
car. It started fine, but the exhaust sounded ever so slightly
"muffled". Idle was fine, so I put it in gear and went on my
way. Acceleraton didn't feel right, it was as if I was pulling a
trailer. I stopped at a stop sign and then pressed the gas to go and a
big plume of black smoke came out of the tail pile. I let off the gas and
noticed that a slight trail of back smoke continued. The further on the
pedal that I pressed down, the more smoke I got.. and now the performance went
downhill fast. I had to press the pedal down twice as far as usual,
resulting in black smoke just to drive 35 mph. I had only driven 2 miles
from work and now could barely top 25 mph with the pedal nearly to the floor...
black smoke just gushing out the back end. I pulled over and put the car
in park. Black smoke dropped to almost nothing and I peaked under the
hood. The engine was idling perfectly. Smooth and no misses
whatsoever. I blipped the throttle cable and the engine revved smoothly,
but more black smoke out the tailpipe. So, the engine seems to be running fine, but black
smoke gets worse as I accellerate. Car seems to have no power while in
drive. Engine revs and transmission does not slip. I backed the car
up into a parking spot and scratched my head a bit. Walked around to the
back end of the car and the exhaust does sound a bit muffled still. It
also left a black patch on the grass just while idling. I rubbed the
grass between my fingers and it was sooty, no real fuel smell. No grey smoke,
no steam, so probably not rings or a head gasket. What on earth is going
on here? My guess was a clogged exhaust, but then it probably would have
blown that sucker right off the car when I revved it a couple of times, now
wouldn't it? Could it be a pvc valve? Does the '67 440 have a
pvc valve? HELP! Thanks. |