Thread: ignition help
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WinRice WinRice is offline
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Join Date: Jun 2005
Location: Colorado
Posts: 700
Originally Posted by tops911 View Post
I've hooked up the wires like the diagram in the engine compartment, in the correct rotation. I don't think it's 180 out in timing because the timing light shows TDC when cranking
The distributor runs at 1/2 the crank speed, so it can be in two different positions and the timing light will still show TDC. That's what everyone is referring to as 180 degrees off. Backfiring with starting fluid can be an indicator of this, it's firing during valve overlap.

Just for fun, pull the plug wires out of the distibutor cap, and move them forward by three towers according to the firing order. In other words, if you could grab all the plug wires at once, pull them all out, rotate three positions, then plug them back in. Try to start and see what happens.
1986 911 Turbo
3.3L, K27HFS, Tial 46mm, TurboKraft Intercooler, 964 Cams, Monty Muffler, MS3Pro Evo, M&W Ignition, Zietronix WBO2 Data Logger, Wevo shifter, coupler and motor mounts.
Old 08-19-2011, 11:26 AM
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