[DML] More problems found (was Piston rings + sleeves)

["stainlessilusion" <5n-@xxxxxxx>]

Yes so I had a chance to check out a few things on my DeLorean today.
While I didn't get a chance to check out the compression yet- This is
what I come up with- first of all, when I push on the adjustment screw
for the idle speed sensor switch, the car idles lower-meaning that for
some reason the plates arent closing to give a slower idle. Bad
srpring? Secondly, when I take the vac line off of the distributor
advance and hold the accelerator at say 3-4 thousand RPMs, it is
smooth running, when I put the vac line back on, it is rough holding
any RPM. There is no vacuum in this line when the car is idling-which
is normal. Lastly, the CPR-there are 2 vacuum lines going to this, one
of which uses a delay valve, but both meet at a "T" fitting. I pulled
the main line off the "T" where it comes from underneith the manifold
and there is no vacuum at all, is this supposed to be? I checked this
out while the engine was both cold and warm. The vacuum line coming
from the back of the intake that goes to the barbs really isn't that
powerful-I'm not sure if this is normal or not. What really gets me is
the distributor advance deactivated-why would it clear up the running
of the engine-something wrong inside the distributor? I've been
driving this car for years with a bad advance unit and once I put one
in I've had this rough, vibrating running engine at any RPM. When the
engine is cold it runs extremely smooth, once warm is when I get all
the problems and hard starting. Likely my ported vac switch is bad??
Thanks for the help guys -----Dani B. #5003








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