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Hmmm...I'd really like to put a close to this :) More details: * I was going to replace the points and condensor because they're an unknown in the car - figured, it couldn't hurt :) * Coil is good. Muir's test produced a nice blue-white spark. * Misfiring happens like this... - Accelerate up through 2nd with no problem - rev all the way. - Shift to 3rd. Misfiring happens until revs increase... - Shift to 4th. Misfiring happens until revs increase... - Misfirings happen in lower revs in either 3rd or 4th. Downshifting from 3rd might produce some "sputter". Overall performance feels good... Thanks to you (and everyone) for their help on this! We'll beat it yet. Jonathan On Sun, 5 Jan 1997, Steven Ayres wrote: > > Jonathan=> I was going to pull the diz because there is some oil coming > => up from the base (slight)...which suggests its time for a new O-ring. > > Well, that stumps me -- I can't imagine what might be keeping that diz > stuck in place. Tried a crowbar yet? ;) > > => I also thought that the problems I'm having with misfiring in 3rd and > => 4th could be related to the diz. I've replaced everything else :) > > Are you replacing points and condensor to address this problem, or as > routine maintenance? Are you sure your coil is good? When was the last > rebuild on the carb? Do you have all your air-control stuff properly in > place and functioning? > > If your misfiring is related to speed rather than RPM, I'd say the > advance mechanism is off the hook. You can test that standing still. I'd > start looking for some way that speed might be affecting the electrical > or fuel system. Maybe an old rubber line on the suction side of the fuel > pump that's collapsing under continuous load? Intake airflow problem? > Stereo drawing too many amps when you crank it up? > > Steven Ayres, Prescott AZ > Editor, Flat Four Fetish Features > '66 Type 343 Ghia > >