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'76 911S 3.0 '76 911S 3.0 is offline
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Join Date: Aug 2004
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Originally Posted by djb25 View Post
Well... I think I found the problem.

I’m apparently having an ignition issue. From the looks of it, I’m not getting spark to cylinders 2 and 3.

Here are the plugs from the left side of the engine...

Brand new plugs, obviously...
That would do it. Essentially those two dead holes would be pumping unburnt fuel into the exhaust. A digital pyrometer would also be useful to go from each exhaust runner per cylinder and look at the temps. It will be quite evident if you have a cylinder or two that are not contributing.
1976 911S Signature Edition - 3.2SSt (JE 98mm 9.5:1 pistons, 964 Cams, ARP Rod Bolts, Big Port SC Heads, 3.2 Carrera Manifold, ID725's, B&B Headers, TS HyperGate45 Gen V, TS RacePort, BW S360, AEM Infinity 506, E85)
IG: Signature_911
Old 08-23-2017, 05:39 PM
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