[T3] Rich Running, flooding, poor fuel efficiency? Yes, all of the above!

["Wade Shen" <swade@umiacs.umd.edu>]

Hi all,

My '72 fastback has been having a intermittent flooding problems/rich
running problems and generally uses a lot of gas.  Sometimes, it gets
into a state where the engine will run very rough, with very little
power and gas will leak out of the exhaust pipe along with white smoke.
Usually, shutting off the engine and waiting a bit, the problem will go
away.  Although this mostly happens after starting, it has occurred a
couple of times after the engine has run for a while.

A number of you have suggested possible problems that might cause this
condition in response to a previous message.  So far, I've done a
complete tune up (replaced points, checked distributor and advance
mechanisms, plugs, etc.), checked the generator, tested the cold start
valve and the CSV thermoswitch, pressure sensor, and replaced the fuel
tank expansion chamber (more like pipe).  I've also checked the two temp
sensors (temp II reads 194 ohm, temp I about 1500 ohm on a 90 degree
day).  These values seem lower than spec (which is @ 68F), but the
resistance is supposed decline with increased temp.  Do these values
seem correct?  Are there any other things other than the injectors and
pressure regulator that need to be checked?

Since I don't have the tools to test fuel pressure, I haven't yet
checked the individual injectors or the pressure regulator.  If one of
these parts is bad, are there any vendors for these parts or do I have
to head to the junk yard?

Thanks,
wade


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