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Orange911S Orange911S is offline
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Join Date: Oct 2013
Location: Walnut Creek, CA
Posts: 110
77 911S 2.7 Cranks - won't start

I've got a stock '77 911S with the original 2.7 motor (33,600 miles). It came out of storage last November at 31,200 miles and had a good going over including new plugs.

This morning it was running fine on the way to work which is about five miles. Leaving the last stop light before I enter the parking garage I usually just keep it in first. I did that this morning and while running about 3500 - 3700 RPMs I felt a "miss". This was not a backfire, but the RPMs dropped about 1000 RPMs for a second or two and came right back.

I was a little concerned, but it ran fine the rest of the way and I drove into the parking garage and parked.

After work I came out and when I went to start it I turned the key and it didn't turn over. It usually takes only a quick (1 - 3 seconds) turn of the key to get it going. Sometimes two tries, but starting has never been a problem. I tried a few more times and plenty of juice to the starter but it didn't catch. I usually don't give it any gas, but after a few tries, I gave the gas pedal a little push, but still nothing.

Where I parked was on a bit of a ramp so I tried to compression start it, but I didn't get enough speed for a good try.

I called AAA, love those guys, and the driver pushed me again, but not enough speed to give it a really good chance of starting.

So now it is sitting comfortably in the garage, but I am a bit stumped on where to focus for fixing this. My suspicion, and the tow truck driver's, is that we are missing spark, not fuel.

Could the "miss" be tied to something with the starting or is it just an abnormality?

Where should I start sleuthing to figure this one out? I searched the forums while waiting for the tow, but did not see anything that seemed directly related to this situation.

Any help or direction is appreciated.

Thanks
Old 03-19-2014, 08:55 PM
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