Well, I'm approaching stumped. My 73 runs like crap
and I've messed with it til I'm about out of ideas.
Here are the symptoms:
Timing set at 10 degrees BTDC with the Vac adv
disconnected and plugged.
Vac gauge shows about 17, it used to be about 20.
I have adjusted on the carb and timing and made little
change in the vac.
i have disconnected and plugged ALL vac lines with NO
change on the vac guage.
The car runs right now as well as it's run recently
WITH THE BREATHER OFF. With the breather on it is
very FLAT at high RPM and has a slight bog if you
punch it at idle. Turning the breather lid upside
down and letting more air in helps but not as much as
removing the breather completely.
Vacumm leak you say. I've tried the starter spray,
propane trick and get no RPM or engine noise change.
Compression is 130 per cyl.
Now for the interesting stuff, under some conditions
of timing, I can screw the idle jets all the way in
and the car still runs which makes me think vacuum
leak. Also the car will not idle down below about 600
RPM even with the screw completly backed out.
Plugs are about a year old but probably don't have a
1000 miles on the, same with wires, rotor button, and
cap. Cap does not show signs of damage or wear.
At this point, the only think I can think of is that
there is a vacuum leak around the intake manifold,
probably on the bottom where I can't get to it.
Before I pull it off, I'd like to hear from the wisdom
of the group.
Oh, one piece of good news is that my 'ticking' sound
was a bad exhaust manifold which has now been
replaced.
Kerryp
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