RE: Ignition system woes help needed

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RE: Ignition system woes help needed - 1/14/2008 10:04:48 PM    Rickcusaf   Posts: 172 Joined: 8/26/2007 Status: offline Sure did all connections are solid and the fusible link was located near the starter. The engine rotates strong, but I'm not getting any spark. (in reply to pg) Post #: 21

RE: Ignition system woes help needed - 1/14/2008 10:51:05 PM    pg Posts: 1038 Joined: 8/7/2006 Status: offline Ok in the corvette shop manual they show the fusible link at the B terminal on the starter listed as  "Thermo" ( a fusible Link ) but they show another " Thermo " from the alternator wire, this is the one you said sparked did you check this one too? PG. (in reply to Rickcusaf) Post #: 22

RE: Ignition system woes help needed - 1/15/2008 3:07:18 AM    78buckshot   Posts: 653 Joined: 1/28/2007 From: Michigan Status: offline Rick, I don't see on any of your post's where you replaced the control module within the distributor. If your getting 12 volts input to the HEI and still no spark then the trouble is in the distributor, either the control module and/or pickup coil. (in reply to pg) Post #: 23

RE: Ignition system woes help needed - 1/15/2008 4:09:35 AM    Rickcusaf   Posts: 172 Joined: 8/26/2007 Status: offline I bought a new distributor with ignition control module to test. Also, the only one of the fusible links that was fried was the one with the quick connect on it. (in reply to 78buckshot) Post #: 24

RE: Ignition system woes help needed - 1/15/2008 2:14:48 PM    78buckshot   Posts: 653 Joined: 1/28/2007 From: Michigan Status: offline Ok, so you have a brand new factory style HEI, the only thing needed is to have 12 volts input at the BATT. terminal and the module connector plugged in. An easy test would be to run a 12 gauge jumper wire from the alternator output terminal to the BATT. terminal on the HEI. Crank the engine and it should fire up, now you won't be able to shut it down with the ignition key because your by-passing the key switch with the jumper, just unhook the jumper from the alternator and it will die. So if this test works you then can use your multi-meter to check the wiring to see where the voltage loss is occurring. (in reply to Rickcusaf) Post #: 25

RE: Ignition system woes help needed - 1/15/2008 2:22:50 PM    Rickcusaf   Posts: 172 Joined: 8/26/2007 Status: offline Hmm I think I may be misunderstanding how to set up my HEI. I thought the ignition coil plugged directly into the distributor and that nothing connected to the distributor, but the vacuum hose? (in reply to 78buckshot) Post #: 26

RE: Ignition system woes help needed - 1/15/2008 3:55:35 PM    DeeVeeEight   Posts: 494 Joined: 10/24/2007 From: South Jersey Status: offline Hey Rick, The coil in the distributor needs a 12 volt supply. It then converts the 12 volts into a high voltage spark. No 12 volt supply = no spark. _____________________________ If you don't ask, you get the same answer as no. 1979 L-82, 383 Stroker, Edelbrock RPM Air Gap intake, Holley 750, Headers, Flowmasters, VB&P 400# rear monospring, Richmond 5 speed. American Racing Vector Wheels, Firestone Indy 500's (in reply to Rickcusaf) Post #: 27

RE: Ignition system woes help needed - 1/15/2008 4:41:13 PM    Rickcusaf   Posts: 172 Joined: 8/26/2007 Status: offline Lol! Well -1 for me. I have a 12v supply line that I moved off to the side. Where exactly would I attach it?  (in reply to DeeVeeEight) Post #: 28

RE: Ignition system woes help needed - 1/15/2008 4:51:44 PM    78buckshot   Posts: 653 Joined: 1/28/2007 From: Michigan Status: offline Rick, can you describe the distributor that you bought? On the side of the cap where the connectors plug in doe's it have terminals designated BATT., TACH., +, GND.? Also is it a stock style or are you using an external coil with a high voltage wire (spark-plug type) that runs from the coil to the center of the cap? On the factory distributor the internal control module is wired to the outside of the cap and plugs in at the + and GND. terminals, these are the connections that send the primary voltage to the built-in coil. Next to this connection you should see a terminal marked "BATT", this is where the ignition system gets it's feed from the 12 gauge red wire that clips into it. With the ignition key in the "Start" or "Run" position you should read battery voltage at this wire. If your not getting battery voltage here you won't have any spark, thats why I suggested the test in my prior post. (in reply to DeeVeeEight) Post #: 29

RE: Ignition system woes help needed - 1/15/2008 5:21:35 PM    Rickcusaf   Posts: 172 Joined: 8/26/2007 Status: offline I never connected a 12v wire to the coil. I thought the wires on the cap and distrib were the only ones. I'll connect the 12v wire and try to start it again. I'm really glad you guys are here. I was >< close to pulling off the valve covers and spark plugs, and redoing the TDC to see if my timing was off. (in reply to 78buckshot) Post #: 30

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