Did anyone catch this paragraph? Over advanced ignition is always hard to start. That's one of the snafu's for people who like to time their cars by ear at the threshhold of pre-ignition. I wonder if Samuel's "backfires" are true backfires (through the intake) or actually muffler explosions (though the exhaust) -- two distinctly different problems with different possible causes. Note David T had electrical suspicions, not fuel delivery -- an old mechanic once told me 9 out of 10 engine problems are electrical. My experiences on many different makes/models of vehicles have since proven him correct. Bill Robertson #5939 >--- In dmcnews@xxxxxxxxxxxxxxx, Samuel <samuel_yahoo@xxxx> wrote: > > When the car is cold, it will backfire at times, this goes away once it > is warm. It appears to be always advancing. Currently, the thermal > vacuum switch under the intake manifold is bypassed (just havent gotten > in there to connect it up). > 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/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> 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/