| Author | Message | ||
     Scott Scott (Scottoz) Member Username: Scottoz Post Number: 145 Registered: 02-2003 |
I have posted recently about problems with my 95 v8. It had eratic idle issues and stalling and hard start. After replacing the HEI module, the coolent temp sensor, the coil pick up, the leads, plugs, the rotor button and distributor cap, pressure and elec testing the fuel injection system and replacing the coil I had ongoing, and varying problems. When I got the vehicle about 18 months ago I replaced the HEI mod because it was dead and instead of starting and running the car as was I also sourced a US Acel coil new and having had good performance from them before I put it on at the same time at the HEI mod. I reccon the thing gained horses. From there I had problems a month or so later. So I began replacing things. I found. eventually, evidence of tracking within the dizzy cap and burning of the rotor arm - I replaced both. That seemed to fix problems. At the end of the day the car got worse to the point where it hardly started and would idle terribly even with another new HEI (number 2!) and new coil pick up. Badly fluctuating idle. Stepper motor cleaned - no difference. Smelled like sparke but how could it be!. A couple of days ago with the car undrivable and barely starting I found the answer. I testing compression and for valvle leakage - all tested very well. I tested the sparke at the plugs and the distributor and found excellent sparke at both - in fact at the dizzy I lift the coil lead and put in a test plug and it jumped the test plug gap and entered the dizzy and ran the motor. It got me thinking. Years ago when the Brits made Bakerlite dizzy caps those caps could not handle high volts. The Acel puts out about 60 thousand volts and can draw about 10 amps. mmm. Took off Acel, put back on original English Bosh that I had shelved and Whalla - perfect. Purring like a kitten. It seemed on examination that the cap had a haze of tracking remains which I wiped off with a clean cloth. The caps cant handle the amount of sparke that the Acel sets up. It tracks and fires off to leads and plugs out of time and causes massive timing problems. I have given the engine a real work out over the last few days and it is really fantastic. I think I will leave well enough alone, but another way of approaching it would probably be to use the Acel coil but to match to it a Lorimor high performance plastic distributor cap with their massive sparke dams that can handle the extra current. Cheers |
