My Brick is dead and I can't get it to start!

Ok, just finished some major work on my tank.

Early last November it blew the plug out of the rear of the head. Since I knew I wanted to replace some seals soon, I decided to put it off until later.

Well later came about two weeks ago where I pulled the intake and exhaust manifolds off as well as the head.

I replaced both engine mounts, the head gasket, intake and manifold gasket, and since I cleaned the throttle body and intake manifold I replaced the throttle body gasket as well. Also permatexed in a new plug for the head.

finally I replaced the valve cover gasket as well. In putting everything back together I put a small amount of dielectric grease in every electrical connection I could see so as to make a nice connection impervious to any precipitation.

Fired it back up and brought it up to running temperature and all seemed well. It had an exhaust leak between the cat and the first muffler which I thought I fixed Sunday night, but I'm getting ahead of myself.

I drove it for about 18 miles and noticed that I still had an oil leak.

After further inspection it was determined that I had set the valve cover gasket improperly, so off it came and on went a new one.

I then proceeded to roll it down my driveway and let it sit there until Tuesday when I got home from work to see if I was successful. Well to make an already long story short, hopefully, I had to start it up and move it and upon starting it it ran just fine and then I put it into reverse and it started to move and then just died. The exhaust leak/sound that I thought I fixed, was still there. Might have to wait till it is up and running before I get it up on a lift to inspect further.

I've been on the phone with my mechanic and I've investigated the following:
- I have spark, checked this as the wire end to the spark plug.
- I have gas flowing as I checked the relay and fuse 4 and 6. checked the pump and both work and pump fuel. By the way, fuse 4, does nothing, or at least I get no voltage across that one. I think the volvo documentation is wrong here, but please, someone correct me if I'm wrong here.
- Checked fuse 13 to the fuel injection and its fine and I'm getting voltage across it. The under hood fuse (25A) is fine as well. Haven't checked the voltage there yet, but I'm assuming I have voltage there. Will hopefully check it tomorrow.

So there you have it. Oh, yeah I also replaced the distributor cap and rotor, but I'm getting spark, so I don't think that is a problem.

So again, there you have it. Please help! I don't want to have it towed to my mechanic. I have a few more things to check out of my Chilton and Haynes manual, but I'm quickly running out of rabbit holes to go down.

Any and all help is greatly appreciated.

Thanks in advance,

Matt
aka thebricktank