My suggestion to you would be to go over the ignition system. I would clean and regap the spark plugs (or change them if they are old) replace the ignition wires, cap and rotor if they are old, and (I think this is where the real problem is) test out and make sure the ignition bypass relay is working. It is there to give you full voltage when starting by bypassing some of the ballast resistor. If it doesn't work you are starting the car at a reduced voltage. While cranking the battery voltage is lowered. That will lower the ignition (secondary) voltage proportionaltly. The bypass is used to give you a hot spark in spite of that. The other problem may be a bad connection or a failing pick-up coil in the distributer. A further possability is a weak ignition coil. I would also look over the vacuum circuit to the Control Pressure Regulator. You might have a vacuum leak or maybe something is not connected correctly. If you can get a hold of another one to swap with I would see if that makes any difference. A dirty electrical connection somewhere can be part of this. I agree that it may be the culmination of several little things (problems like this usually are on a 25 year old car). At least you know you don't have to go hunting in the fuel system! To get an internal combustion engine started you need 3 things to work. You need the mechanical system (the pistons, valves, etc to work and be timed) the fuel system, and the electrical system. We can rule out a problem with the motor, the fuel system, so that leaves us with the electrical system. Do you get a nice thick blue spark when cranking warm? David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, Peter Lucas <lucas@...> wrote: > > Well, as I've reported before, I have confirmed the existence of a > "warm start problem" that has nothing to do with rest pressure and is > definitely distinct from the classic "hot start" problem. My symptoms > were very similar to Daniel's: starts fine when cold and when hot, > but if you let it sit for about an hour, it is difficult to start. > Since I have a full-time fuel pressure sensor, it is very easy to > check rest pressure, so I know for sure that this wasn't the problem. > Swapping the plugs does permit an easy start, but this doesn't prove > a rest-pressure problem, just that extra enrichment helps (after all, > 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/