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Old 10-24-2001, 06:25 PM
LarryBible
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Please help me troubleshoot the miss

Well, I got the '81 300D back together today, started it up, got oil pressure, no leaks, generally okay.

Number one cylinder refuses to fire. I ran it a few minutes, the miss didn't go away. Worried to death that there was a hole with no compression, I pulled the injectors and checked compression, 370 pounds on all cylinders, whew!

Before pulling the injectors for the compression test I cracked open each line at the injector and the miss was obviously on number one cylinder. This is where the miss was before I took it apart, but at that time I had less than 100 PSI compression on that cylinder.

When pulling the injectors, 2 through 5 had a black sooty powder coating on the tips. Number one did not. I took the number one injector apart, everything looked okay so I put it back together and back in the car. Still had the miss.

I went out and robbed an injector from the 240D and put it in number one. Still had the miss.

When I crack open the line at number one, fuel sputters out. I took out the plunger from number one nozzle when setting start of delivery while the engine was on the stand, but I'm quite certain I put it back in the way it came out. Is there a way to get it in wrong which would cause this?

Do I need to take the pump to the shop?

Any ideas or things to check will be very much appreciated.

Good news, it looks like the engine itself is going to be okay. With 370 pounds all the way across, I can't imagine that I'll have to open it up again for a long time.

I drove it down the road and it wouldn't shift past second. It was not completely full of ATF. Will this make it not shift, or is it strictly in the vacuum switch monstrosity atop the valve cover. I will get ATF tomorrow and top it off. I'm not near as worried about fixing the transmission as I am about the miss.

Thanks to all,
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