question on injector replacement

[matarm4]

I am replacing my injectors on my 95 ford f250 powerstroke. one of the glow plugs is stuck and I don't have the time to fix it now. I screwed the plug back in and decided to use a vacuum pump I bought from harbor freight to remove the fluid that has fallen into the cylinder. I pumped out about 5 and a half ounces of Oil/Diesel out of the cylinder and could not get any more out. Do I need to worry that I didn't get it all or is it not a huge deal. It is the cylinder closest to the firewall. I was wondering if I could just leave the injector out and bump the starter, or would more Diesel just fall into the cylinder. any advice would be great.

PS any advice on the glow plug would be great. It is still in tact and I can back it out to the end of the threads but it won't budge past that. It makes a squeaking sound when it is turning and I can't turn it without a socket on it. I had to take the rocker arm off to get to it and I just can't seem to break it free.