Tuning Wildcat MK1 Plenum install problem

I got a plenum for my MK1 Wildcat. Watched the install videos. Did the install. I was surprised how easy it was. Problem now is it won't air up. And has some sort of fluid coming out the hole in the pic below. Anybody have any suggestions.
Wildcat 1.1611778070.jpg
Wildcat 2.1611778107.jpg

 
OH hahaha I thought you used slang bicycle (STYLE) pump term as you actually own a proper 4500psi PCP hand pump.

NO a regular bicycle pump won't fill to 3000psi. Not even close.

No normal shop compressor will fill it either.

Surprising and alarming to know you even own a PCP gun without proper filling equipment to be honest.

It's like buying a new car and there's no gas station anywhere near you.
 
The 2 pellet intentional double load trick does work when trying to hand pump (using a proper PCP airgun pump of course!) when cocking the gun alone doesn't prevent the gun from pissing all its air out if the barrel.

Always put it on SAFE and point it in a SAFE direction with good backstop while hand pumping from zero pressure since there's still a chance it may fire just from the built up Hand pump air pressure if the valve doesn't seat quick enough. Loading only one pellet to do this trick is very dangerous and may likely fire since there's less resistance with one pellet instead of 2 that's why I say load 2 pellets to do this trick. Remove the LDC to shoot them out when done to avoid damage to the KDC.

2 pellets blocks the transfer port which forces the valve seat (poppet) to shut if you don't have a 3000 or 4500psi tank to fill the gun from the much dreaded zero starting pressure. The Hand pumpers nightmare.

With Most guns you may only need to cock it to be able to hand pump from zero pressure. FX with free flight hammer system such as Wildcat for exanple has it and needing a tank to fill or the 2 pellet double load hand pump trick.

I used to call this neat little trick the load 2 or 3 felt cleaning pellets trick like 25-30 years ago but who actually uses felt cleaning pellets nowdays anyway?

I was even laughed at for suggesting lubing pellets with Lemon Pledge back then as well.

So was sewing machine oil for general pneumatic pumper and Co2 Springer lube before Alphabet org auto trans stop leak quick fix that came later after much experimenting and having good success (NOT as chamber lube!!!) and some PCP lubrication (not inside or around PCP HPA areas that may go BOOM!!!).