RagTop
Old Grumpy
I've been chasing this problem for about six months and I still can't solve it. Under full throttle on a grade in third gear at around 3,500 rpm the engine begins to miss. As the acceleration continues the miss becomes more prominent. I had a local mechanic try to diagnose my problem. He put it on an oscilloscope and found nothing, so he changed my wires and charged me $322. The car still misses. In fact, it's getting more pronounced. With my cutouts closed you can only feel the hesitation, but with them open you can hear it missing plain as day. I have a Pertronix Ignitor ignition that has been in the car for about 19 years and a Pertronix Flamethrower coil. When I first noticed the miss, I changed the plugs expecting to find at least one that was fouled, but they all looked nice and tan in color and the gaps were still pretty good after 50K miles of use. Any suggestions as to what to do next? I want to drive this car to Reno for Hot August Nights in early August and I want to get this miss behind me by then. There's a whole lot of high speed grade climbing between here and Reno.