If I try to re-start my 86' 5000CS Turbo soon after I've just shut it down, nothing happens. No crank over, nothing. However, if I wait at least 20 minutes, it will start as though everything is OK. I've changed out the following parts: Starter, distributor & rotor, spark plug wires, ignition switch & alternator. All O.E.M. of course. I've checked the ignition coil according to the Bentley manual, good there. Battery is at full charge. Any suggestions?

if there is no crank there can't be a lot wrong. Start by going to the local rat shack and getting a cheap volt meter (maybe $15), you will save a lot of wear and tear on your bank book. Now, when the car has failed, jack and block the front up (that way if it does start you will not get run over), and get under and measure the voltage on the battery cable to the starter (the nut and big wire). It should read about 12V. Have someone try and crank it. If the voltage drops a bunch you have a bad battery or connection along that big cable to the battery (could also be on the ground return). If the voltage stays up check the small wire with the spade lug. Should be no voltage until someone cranks it. If when cranked you still have no voltage than you have a problem in the ignition circuit. Follow it back until you get voltage and you have found your problem. I'm told that there is a connection in the passenger side well that gives trouble (never had that one so I never found the connection). I have had trouble with the jumper in the relay/fuse box under the hood (is in series with the ignition switch). Good luck with it.

How's performance otherwise when it runs? Sluggish or using more fuel lately? I found a bad connection on the vacumn line running from the big rubber air cone cover into the passenger fender well to the cannister. It has no clamp on the blind end. I over fixed everything else before I found it. Now idle settings are all off but it starts and runs strong.

Performance, idle and emissions are pretty much factory spec now. I regularly see 23-26mpg., no problem. The only major vacuum leak I had was a crack in the air intake boot. The cannister connections OK. Boy! bit of a bugger to get to. I got the idle and emissions back to normal after I changed out the Idle Stabilizer Valve and the Charcoal cannister valve. My car has almost 220K on it now. I only need to get the starting gremlin under control. I'll give Dave's advice a go first weekend in July.

fuel pump check valve.

Finally have the problem taken care of. The 6-1/2 month old, Re-Manufactured Bosch starter was developing a short at high temperatures. At least it was an even exchange for another one. Thanks for all your help!