Out of winterstorage: gauge is not showing spray bars

[dubversion]

Hi guys,

I installed my HFS4 in my BMW N54 application in october 2017. In december i had it successfully tuned in Germany (see my other post). As i was on wintertires, i haven't bothered turning on the aquamist system (just using the gauge switch) since the return from the tuner.

A few days ago i put on my summer tires and of course wanted to test my meth system again, getting ready for some drag racing. However, during a few pulls (about 6), the spray bars on the gauge are NOT lighting up.

I have the failsafe disabled/bypassed with the dipswitch and my tune does not need meth; so i'm still safe, but of course i don't understand why, without touching anything, within 90 days, the system is not working.

I would like some help with the quick checks, this is what i can come up with and what i have verified:

(1) When turning on the system, i'm not sure if the pump makes noise (is even on), i'm going to check that soon.

(2) During my runs, i heard noise from the pump that sounded like a spray / push sounds, it made me think pump is actually on and working or is there another valve making this noise ?

(3) I thought that the 6 pulls would prime the system, i can imagine that due to 90 days of no use some air would get into the system, buy my tank stayed half full, so we can rule out not priming it long enough, or am i wrong ?

(4) Of course i checked the lines, i saw no leakage, didn't smell anything and checked the actualy flow sensor at the FAV; it seemed to be just fine.

My main issue is that all is now in meth and it's quite toxic and flammable, so i want my next tests to be simple and without too much danger; so i'm thinking of taking off the line just after the FAV and do a tiny pull idling to see something comes out....


Any feedback is welcome, i'll keep you posted.


Jeroen