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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,557
Well we have some interesting data today.

I stole an hour and changed the spark pug wires. The old ones appeared to be in pretty bad shape as the connectors that plugged into the dizzy were corroded.

Replaced with a nice new perfect wires.

Fired the engine and you guessed it, NO CHANGE.

Ran rough above 1500rpm until the warm pressure reached spec then smoothed out a little. Let the emgine idle for a few minutes while I checked a few things.
Shut the engine down and after 5 min fired up again. This time it ran a bit rough at idle as well.

Here is where we get another clue.
Put the car in gear and started down the driveway - and the engine DIED. An attempt at cranking fired once then no more.

> Gages went wacko when key turned to 2nd detent, did NOT hear CDI box.

My son and I pushed the car into the garage and I hit the key again for fun and this time the gages did not go wacky and the CDI box whistled as it should.

OK electrical gurus, what do we have here?

I no longer think the green wire is the culprit. Now I'm thinking relays or ignition switch.
Tell yu one thing, once this problem is solved the SOB is gonna run like a scalded cat with all this new ignition rear!!
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 12-08-2012, 03:39 PM
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