Leaking Impact mk2

[Jez]

Hi all, I know this subject comes up a lot but hopefully adding to usefully info for others to learn. As title the Impact is leaking from 200 bar to 0 or as good as over 48hrs that is the whole gun, cylinder everything. I have been playing with the reg, removal cleaning and reasembly etc. Just ordered some proper leak detection fluid from ebay as don't want to do the dunk in water test !. Do you think it's the reg ?, did fit a power plenum kit a few weeks ago, the early one but had no problems initially. Any thoughts and directions appreciated.

 

[bigHUN]

Couple things can get wrong with orings when we take the Impact to the work bench.
I also did my Power Block upgrade kit earlier in the spring and I had a huge leak right away,
a first suspect was the Reg (I turn it without a pressure), but - false alarm ... anyway, I did a full service on the Reg and it shall be good for next years to come.
I would start with the leak through the barrel, (balloon test) this will show if the valve popet seals. Dry fire it couple times in a safe direction and leave it over night with a balloon condom attached.
During dry fire (without a mag) inspect the 2mm oring if any air blast blows from the valve (power block hole).
First do these tests and go from there.

 

[Jez]

Couple things can get wrong with orings when we take the Impact to the work bench.
I also did my Power Block upgrade kit earlier in the spring and I had a huge leak right away,
a first suspect was the Reg (I turn it without a pressure), but - false alarm ... anyway, I did a full service on the Reg and it shall be good for next years to come.
I would start with the leak through the barrel, (balloon test) this will show if the valve popet seals. Dry fire it couple times in a safe direction and leave it over night with a balloon condom attached.
During dry fire (without a mag) inspect the 2mm oring if any air blast blows from the valve (power block hole).
First do these tests and go from there.

Thanks for your responce mate, will try all those things plus got some leak detector of e-bay.