Engine Cleaning and fuel tank restoration help

["James LaLonde" <deloreandmcxii@xxxx>]

Well friends, 1697 is now safely and legally in the hands of Erik 
and Fred Geerdink. Whether they let her live in parts alone and help 
other DeLoreans, or restore her to her former glory - she's in good 
hands (albeit injured hands - Erik)

So I'm deep into fixing up 4009. She was GREAT GREAT GREAT cosmetic 
condition. She has a custom exhuast, cd player, and alarm I wasn't 
aware of until I saw her first. But I've never been one for 
originality - she has ground effects for heavens sakes!

But I'm replacing most of the fuel system now, And giving her a tune 
up. While I have intake manifold off I'm going to replace the water 
pump and hoses around there (the rest look ok). And do some 
detailing/cleaning up. 
I just used some intake man. cleaner on the fuel distrib. and both 
halves of throttle body/plate/air meter thingy. and on the air horn 
and intake manifold itself.

I have a few bits of advice to ask of the member who have done such 
things before:
1. How can I better clean the inside of the intake manifold.
2. How can clean the head without getting all that 
dirt/creatures/anti-freeze in the intake ports.
3. How can I clean the valves/valve stems (they are NASTY) without 
all that crap going down further into the ports/cylinders - or will 
it hurt the engine THAT much to have all the crap go into the ports 
(obviously some of the valves are closed-- but the ones that are 
open would get a nasty dose of black nasty stuff)

4. On the other side of the car - I just fueled up the tank... 
(stupid me) and now I need it empty to clean it out. I can work 
inside the tank fine with the gas there (replacing baffle/hoses with 
Herv's new metal baffle)... but it is filled with disintegrated hose 
bits, and rusty residue stuff. How the hell can drain the tank 
efficently without removing it (not really D specific - just looking 
for ideas).

As ever, I'd appreciate any advice you veterans (not that all the 
DML are veterans :P) have!
-James LaLonde 4009 (new vin sign off...)