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Old 11-07-2008, 11:39 PM
Todd Miller's Avatar
Todd Miller Todd Miller is online now
1966 250SE Coupe Owner
 
Join Date: Jul 2005
Location: San Luis Obispo, CA
Posts: 583
250se won't do more than idle

Hi Guys,
Got my rebuilt cylinder head back on Friday and installed it this week.

Went to start the car and of course there was the difficult first start while I bled the injector lines, but then it fired, smoothed out, but would do nothing but a low idle at maybe 400-500rpm with my foot to the floor. Anything less than half throttle and it would die.

Prior to removing the head I rotated the engine to TDC, pulled the timing chain sprockets out of the head and zip-tied the chain up tight to itself to keep it from rolling into the engine and screwing up the timing of the injection pump and distributor.

So it's running like something's timing is very retarded. I popped the valve cover back off, rotated to TDC on the crank and the cam mark is straight up at 12 o'clock (maybe just a bit on the passenger side of 12) and the distributor rotor is pointing at the mark on the distributor housing. That's how it's always been set up and it's always run fantastic.

I'm going to put a timing light on it in a few minutes, crank it over and see what the ignition timing is doing.

Anyone have any ideas?
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1966 W111 250SEC:
DB268 Blaugrün/electric sunroof/4 on-the-floor/4.5 V-8 rear axle
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