The coils job is to take the relatively low voltage that comes in on the + terminal and convert it to high voltage out the ignition wire to the distributor each time the coils terminal is grounded. The Alison units job is to ground the coils terminal at the exact right time. Obviously you cant do it at the right time or fast enough to actually make the engine run, but you can bypass the Alison and ground the side of the coil manually and see if you get a spark out of the main ignition wire of the coil. With the ignition on, remove the end of ignition wire from the distributor cap and hold it about an inch from the engine with insulated pliers wrapped in a shop rag so you dont get shocked. If each time you ground the terminal of the coil, you get a spark jumping from the wire to the engine, your coil is working. To the best of my knowledge, the Alison unit is a black box and cannot be tested any further than making sure that the wires are properly connected, the shutter is seated and the optical trigger is properly mounted. The fact that you call it an Alison and not a Crane Cam means it 20+ years old and may have simply died. Mine stopped working earlier this year and Crane Cams offered to test it for free however does not honor Alisons lifetime warranty so it seemed (pardon the awful pun) pointless. Good luck! Greg
> From: [email protected] > To: [email protected] > Date: Sat, 4 Jan 2014 16:19:00 -0600 > Subject: [Spits] 75 spitfire - no spark > > it was running maybe two months ago? been sitting outside, waiting for me to > get to it. > > has a weber and header; no pollution stuff; has an allison electronic ignition > system. Ibve had the car about a year. > > has a car cover; been a lot of rain. > > according to my tester, no spark. > > Ibm going to order a new cap and rotor; in the mean time, how do I test back > from there to see if itbs the allison or the coil? > > thanks! _______________________________________________ [email protected] Donate: http://www.team.net/donate.html Suggested annual donation $11.47 Archive: http://www.team.net/archive Forums: http://www.team.net/forums Unsubscribe/Manage: http://autox.team.net/mailman/options/spitfires/[email protected]
