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You know it to be in the ignition, right? Do a tune up and then be suspicious of the Distributor.... What was the last engine fix you did? Fuel injection sucks for most 70-80's cars anyway. Buy non-smog and you'll be alot more happy!!! -Terry 71 Westy (Needs bodywork) Douglas_Brashear@mail.amsinc.com wrote: > I posed this question to Jim A. a few days ago, but I figured I'd poll the > collective knowledge of the list one more time on this one (now that I have > a few more facts in hand). My 73 fasty is running poorly (stock FI, 40 K > miles on original engine, idles well when cold, when warm the idle has this > surging effect, difficult to maintain engine speeds because it wants to > hesitate). At first I thought it was a fuel pressure problem...but a few > days ago I checked the plug wires with my inductive timing light with > puzzling results. > > - the pulses from the coil are consistent (didn't miss a beat)...its a new > Bosch blue coil (tried and tested in my squareback) > - the pulses to each plug seem to miss here and there, particularly when I > try to hold an engine speed of like 3000 RPM > - the plug wires are almost new as well (though I haven't checked > resistance with a voltmeter yet) > > I bought a new set of plugs to install, just to eliminate another variable, > but if that doesn't help I'm tempted to say the problem is with the > distributor...why else would the current going in be strong and consistent > and the pulses going to each plug be inconsistent? Would a distributor > rebuild, with new points, condensor, etc. help? Any ideas? > > Many thanks in advance! > > -Doug > 69 auto FI squareback (for sale) > 73 FI fastback > 98 NB > douglas_brashear@mail.amsinc.com ------------------------------------------------------------------- List info at http://www.vwtype3.org/list or mailto:help@vwtype3.org