Acert air compressor/air dryer system.

I have a question about the air system on my '06 MXS Acert engine. I have seen similar problems on other threads but could not find an answer.

First off if I'm pulling a hill and the compressor kicks in, I lose 5 lbs. of boost or so. Then when the air dryer pops off the boost comes back. Is this normal operation or do I have a problem with the reed valve in the air box?

Also, with the engine shut off if I remove the oil fill cap I can hear a small amount of air leaking from inside the crankcase. I don't believe it does it all the time but have noticed this a couple of times.

Thanks in advance and I enjoy reading all the roundtable/steering wheel discussions on here.

 

So the valve that pops off in the air dryer was sticking? When you disconnected the line you shot wd-40 in towards the air dryer?

I had an issue this summer with the pop-off valve sticking open and not letting the truck build up pressure. I cleaned it out with some spray and it just went away one day so I figured it just had dirt in it. I may need a rebuild on the air dryer but didn't want to start throwing parts at it. I'll try some wd-40 and see what that does.