Could be a rich/very rich mixture and/or the known hot start problem (assuming that your "short period of time" means "fully warmed-up". Smell the exhaust gas: if you smell unburnt fuel it's too rich. Lean it out a bit. If you didn't change the accumulator, that also could be the base of the starting problem after warm-up. Welmoed. --- In dmcnews@xxxxxxxxxxxxxxx, "randybell" <randybell@...> wrote: > > I'm the original owner of an 81 DMC. I stopped driving the car in 1987 with > 12,200 miles and parked it in my garage. I have been working on getting it > started again for the past few months by having the gas tank and fuel lines > cleaned. I have replaced the fuel pump, fuel regulator and some of the > sensors. > > The car now starts fine when the engine is cold but doesn't after it has run a short period of time. I noticed last night that the catalytic converter glows red hot after a few minutes of running. I know they run hot, but not cherry red. The O-2 sensor is close and might be affected by this. I don't know if that would cause my restart problem or not. > > [Non-text portions of this message have been removed] > ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/