Finally joining the forum!
Hello all and sorry for the cry for help.
I have a Natural White 04 Limited V8 with 245K. She's NEVER had issues, oil changes, brakes and regular PM only. Along comes COVID and boom she has a rough idle.
Sprayed starter fluid, idle smoothed out. I smoked tested it and found a serious leak around the lower intake manifolds. Cleaned the top of the engine, blew of all the debris I could with my compressor and opened her up.
Confirmed the gaskets were shot, covered up the intakes and ordered the parts.
Opened hood to install the gaskets a few hours ago and found the towel blown away from the intakes. We had a few storm fronts with 50mph winds go buy. Just to be safe, I went to advance auto and bought an inspection camera to check it out and said a few choice words. I let my baby down, dirt and sand particles have blown into the driver side intakes.
My plan is:
1 Shop vac, large hose then smaller hose,
2 Compressed air blasts & small hose vac again,
3 Scope again, repeat 1 & 2 until clear.
4 Pull the fuel pump relay turn over a few times and hopefully let the valves exhaust stroke push any residual out.

I'm going to do 1,2 &3 now, 4 has me nervous, should I do anything else or something different?

Honestly just blow and suck / wipe out what u can.. I have done heads and intakes on other vehicles in less than ideal conditions and the small amounts of contamination at the end of the day are negligible

The engines are alot tougher than you think

Thanks, well see what happens when I close it up this week.
I replaced any hoses I saw back there while I had access.
Is there anything else on top I should replace while I'm there?
Do knock sensors ever go?
Thanks