You may have a significant vacuum leak. Classic symptom is very inconsistent idle. On engines with manually set idle (cracking throttle plates on a carburetor, for example) a vacuum leak will cause engine to start to die as air is sucked somewhere other than fuel metering device -- lean mixture -- then it will catch itself when vacuum drops due to extremely low RPM's and rev back up. Is usually accompanied by much shuddering and sputtering. Of course CIS adds whole new variable. Simply unplug idle speed motor at mid point of wander to see if problem is in automatic idle system or if engine continues to misbehave. BTW: what did plugs look like when they came out? If they are totally clean or even discolored white you most likely do have a vacuum leak. Do you have a compression gauge? I'm very curious what cylinder pressure of Houston's engine is. European spec PRV in my DeLo is 170 PSI. I believe stock DeLorean is 155. Bill Robertson #5939 >--- In DMCForum@xxxxxxxxxxxxxxx, Andrew <aos+yahoo@xxxx> wrote: > > What I did notice after driving for a while was that the engine now never > stops hunting at idle. Before, it'd smooth out very nicely within a few > minutes of starting, but today, even after driving around for 15 minutes > and getting my coolant up to normal temperature, the engine is still > hunting at idle, sometimes as much as 600 rpm or so. > > I may simply need to go adjust the idle a little bit to smooth it out, or > perhaps the engine is unhappy with something I've done, or maybe I just > broke it. :) I'll keep fiddling around... > > -andrew To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx _____ Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/DMCForum/ * To unsubscribe from this group, send an email to: DMCForum-unsubscribe@xxxxxxxxxxxxxxx <mailto:DMCForum-unsubscribe@xxxxxxxxxxxxxxx?subject=Unsubscribe> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .
<<attachment: winmail.dat>>
Back to the Home of PROJECT VIXEN