himself Posted July 28, 2007 Share Posted July 28, 2007 I am getting a few sparks from my coil every now and then, I bought a new MSD blaster 2 coil and still have the same problem. Here is what I have verified; -I have 12v to the coil positive terminal when the key is in the On and Start positions. -I have MS pin #36 to the negative side of the coil. -I am getting a spark from the coil maybe once every 10 revolutions when I turn the motor and the car will pop like it wants to start. -I have adjusted the distributor timing to all angles with no effect. ('82 turbo CAS crank angle sensor distributor) -MS squirt light flickers with spark but no spark reaches the plugs. -The inverted spark option in MS was set to No so I changed it to Yes but still no effect. (MSnS, Megatune 2.25) -When I first wired it up several weekends ago I had plenty of spark but then it stopped and that's when I got the new MSD coil. Here is my Spark Settings Table I had the car running initially but I've been trying to get this MS thing to wokr for over 2 months now. I'm quite ready to rip it all out and just spend the extra money and get an SDS system installed. Quote Link to comment Share on other sites More sharing options...
z-ya Posted July 30, 2007 Share Posted July 30, 2007 The damage to the VB921 may have already been done when the output was not inverted. Might be time to install a new VB921, and try it with the new coil. Quote Link to comment Share on other sites More sharing options...
himself Posted July 30, 2007 Author Share Posted July 30, 2007 What is the VB921, I've seen the name before but have no clue what it is. Quote Link to comment Share on other sites More sharing options...
z-ya Posted July 30, 2007 Share Posted July 30, 2007 It is the high power device that drives the coil. It is in the MS. Quote Link to comment Share on other sites More sharing options...
naviathan Posted July 30, 2007 Share Posted July 30, 2007 The flashing on the MS just means you're getting a tach signal. You can try two things: 1. Pull the coil wire off the dist. and put a plug on it and see if it sparks there. 2. Try swapping the signal wires out of the CAS. If I'm not mistaken it should be a VR type sensor and could be reversed. I'm still playing with my VR sensor, but I'm using the one in the stock N/A dist. Your problem sounds similar to mine and I'm about where you are as far as frustration goes. Quote Link to comment Share on other sites More sharing options...
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