Glenn72

I have one but I don't think I would buy it again. Go with the ZX dizzy and save yourself some money. Not sure you gain anything with the Unilite.

Cool thats what I will do, T it off of the brake booster line. The reason is that everyone keeps telling me to check vacuum pressure as a means to troubleshooting my other problem.

I want to install a temporary vacuum gauge and I'm not sure where to hook it up. I have a L28 240Z triple 40 DCOE-18 weber set-up with a cannon intake. The only place I can think of installing is at the brake booster but have read not to do it there?? I don't want to drill and tap a hole. Why can't I use it at the brake booster?

Well I checked my oil and it smelled of gas which I'm sure is a result of the engine missing. I'm having a real hard time isolating the problem or problems. Maybe I should drop a 280 dizzy in it to see if its the Unilite although I did replace the ignition module without any change. I also get a random buzzing from my Carter fuel pump and its not becuase of the way its mounted, the sound is internal to the pump. Never lasts long but I wonder if its going bad and thats what sometimes causes the amp gauge to fluctuate. This is really starting to drive me crazy!

Carl, that explains the blue wire in TBK1's car:>)The 240's do have amp meters and mine spikes randomly, sometimes a little but on occasion a lot. I have not adjusted the timing curve yet, it is the way it left the factory. I set my initial timing at 15 degrees so I think my total advance will be 39 degrees which might be a bit high. Any ideas as to what could be causing the miss on all cylinders? Is the jumping amp meter just a Z thing?

TBK1 thanks for all your help, hopefully this did you some good as well. So it sounds like my 5 V on the coil neg. is OK after all. My problem has to me in the distributor then, I mean what else could cause missing on all cylinders? I borrowed a coil from a friend and I will try it just to rule one more thing out. I have spent hours reading books on these webers and have mine tuned in fairly well. I do still have a stumble under WOT. I tried changing the exhaust pump to 0 and it seemed to help a bit. Focus then shifted to solve this problem. Hey does your amp gauge ever jump a round? Mine does a bit and I don't know if its a Z thing or is signaling an electrical issue.

TBK1 that would be great if you could check it out. Maybe this isn't my problem but that pretty much then means I'm stumped.

Carl, I originally had it hooked up like on Zhome but in an effort to get the voltage up I removed the extra resistor. I then had a problem getting the tach to work but figured it out and it works fine. Maybe I'm chasing my tail assuming the less than 8V on coil negative is the cause of the miss. Thats why I was hoping someone with the same set-up could measure with voltmeter and see what they have. Century Performance tells assures me this is the problem but I'm not so sure.

OK lets say this isn't the problem, can anyone tell me what else it could possibly be? As mention I know my grounds are good. I have noticed that my voltage gauge sometimes jumps a bit, is that normal in a Z? I have just installed a new voltage regulator and it made no difference.

Good news is my 72 car runs, bad news is that it misses on all cylinders. I have cleaned and checked and double checked all grounds. During the rebuild I replaced the starter, alternator, coil, distibutor, spark plugs and wires. I have rebuilt webers which are sync'd and operating fine. The call starts right up and is very driveable but it misses. I wired it up per Century Performance "new" hook-up diagram. They said that I must have NO less than 8 volts at the negative side of the coil during idle and I have 5 volts. They said this is the problem. I have had a second set of eyes look at it to make sure I didn't hook it up wrong but we think its right. I also checked the module and it tests OK as well as inspecting the distributor cap. Here is how I hooked it up. Green....coil (-) BW coil (+) Red along with BW (12V with ignition on) on one side of ballast GW on other side of ballast Can someone with same installation check their wiring and possibly measure their coil negative to ground? Any suggestions greatly appreciated. Glenn