No spark - Code 2113 Hall Signal - Crank Pulley slipped

[cody at 5000tq.com]

BTDT. My black 5ktq sheared the keyway not too long (like 5-600miles)  
after I got it. PO had the head rebuilt just before I bought the car.

  In my case the cam would't turn at all when spinning the engine, and  
the keyway gave way on the highway at 70mph and bent all 10 valves on  
the STOCK MC engine. You should have seen the look on my face when I  
had a friend hit the starter while I watched the t-belt not turning!!  
I was perplexed, and it wasn't until by chance somebody happened to  
hit the starter while I was under the car and I saw the crank pulley  
bolt turn out of the corner of my eye while the pulley stayed still.

-Cody Forbes

Quoting Ben Swann <benswann at verizon.net>:

> I had been diagnosing a problem I thought was associated with a bad   
> hall distributor –
> Code 2113 that had left me stranded one day.  After checking quite a  
>  few things and
> determining the TDC pin was still on the flywheel, I rechecked   
> flywheel/crank with
> respect to cam pulley.  Although the Mark in front of the crank   
> pulley was still lined
> up with the Cam Sprocket, the 0- on the flywheel was nowhere to be   
> seen.  Upon locating
> the 0- and resetting the timing belt, the car started.  A quick test  
>  run and the crank
> sprocket slipped again – I did not realize what was happening until   
> the second time, but
> indeed the crank sprocket was slipping.  Must have sheared the key.
>
> I’ve never had this happen before and this one was tightened to   
> about 300 ft-lbs using
> loctite blue.   This is just a data point for those who may   
> encounter a dead engine
> no-spark condition and ruled out everything else.  This problem   
> happened on megasquirted
> engine using MAC-14 as ignition, but could have been the same for   
> any of the engines
> using the single window hall distributor (7A, 3B, MC-1,2, WX, etc.)   
> and may have
> resulted in bent valves on some other engines using high lift cam.
>
> Ben
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