[Xenozx1]

Hey all, just looking for some suggestions on what to check with my JB4 meth injection since it appears to have stopped working. Ive been using it for months no issue, but I went and checked the other day, and my tank was full and shouldnt have been, I tried to purge, pump wont pump or make any noise. Tried updating firmware, and checked everything, nothing has come loose.

What should the first thing be to check? I do have a volt meter, and at the very least I know I should check to see if the pump is getting power, how exactly do I do that?

thanks so much!

[Steve @ BMS/Fuel-It!]

I'd verify the pump 1st (connect power directly) and work my way backwards from there. Make sure when you purge you are on the meth map or it won't work.

[Cannon @ BMS]

Also, please post a log, since some settings can
disable WMI. Then open FSB to see if the red led is
blinking, that indicates it has power/ground. If there is no blinking, then there may be a power/ground issue.

[buddy7_12]

This happen to me as well. It was a bad ground to the FSB

[Xenozx1]

hey guys sorry finally had a chance to mess with my meth today I relocated the ground to a new place and I tested the pump by hooking direct to battery. pump works when you touch it to red black on battery. I tried changing my ground and checked all connections to make sure nothing came.lose and all is good. for new ground I used a screw driver to scratch away paint underneath for good contact but still can't get meth to flow. I didn't check the red blinking light I'll try that in a couple but wanted to post pics of my grounds and atleast confirm pump does work

[Xenozx1]

photos

[2021GT2]

For me its the solenoid keeps failing because i can hear my pump whenever i purge it. ive had my meth kit for roughly 4 or 5 months now and im on my 3rd solenoid. the 1st 2 were bms this 3rd one is from snow performance. if this one fails something else is goin on for sure might be the fsb. to test the solenoid put one wire on positive and the other on the negative end of the battery u hear it click your good, no click no good

[AWDGT2]

You can do like I did after my 3rd solenoid, get rid of them all together. I use nothing but check valves now. You assume a slight safety risk in the system but I've had 0 failures or flow issues for over a year now.

[2021GT2]

Dang i never thought of that option. You have a link or the name of the company u got yours from? Would be much appreciated

[2021GT2]

I found it. Snow actually sells one

[AWDGT2]

Sorry just getting back to this. Yes, I use snow nozzles, adapters, fittings and check valves. I use BMS tube, billet adapter, pump and tank.

[Terry @ BMS]

Originally Posted by 2021GT2

For me its the solenoid keeps failing because i can hear my pump whenever i purge it. ive had my meth kit for roughly 4 or 5 months now and im on my 3rd solenoid. the 1st 2 were bms this 3rd one is from snow performance. if this one fails something else is goin on for sure might be the fsb. to test the solenoid put one wire on positive and the other on the negative end of the battery u hear it click your good, no click no good

Maybe it's the fluid you're using, or the solenoid placement itself? They don't handle heat or straight meth all that well over the long term.

Not a fan of check valves. Not only do you lose a critical part of the safety systems (a way for the system to force off flow if needed), but you also end up with a 15-20psi injection pressure drop meaning less flow and worse attomization.

[Xenozx1]

OK so sorry for spam

[Xenozx1]

but I need 5 posts to post my video so this is my 5th lol

[Xenozx1]

fsb blinking wmi - YouTube

so I do have blinking red light. when I hit purge I don't hear the pump do anything at all. what would be the next thing to Check?

sorry been really.cold and I don't have a garage so today is first day I could mess with it again 55 and sunny.

on a side note the selenoid failing wouldn't keep the pump from working right?

[Terry @ BMS]

Attach a JB4 log so we can see your settings.

If solenoids keep failing its probably your fluid.

[2021GT2]

Originally Posted by Terry @ BMS

Maybe it's the fluid you're using, or the solenoid placement itself? They don't handle heat or straight meth all that well over the long term.

Not a fan of check valves. Not only do you lose a critical part of the safety systems (a way for the system to force off flow if needed), but you also end up with a 15-20psi injection pressure drop meaning less flow and worse attomization.

My problem is probably both. I run a 75/25 blend and the last time it went out it felt pretty hot. I have it placed right near the fuse box under a vanity cover.

[Xenozx1]

heres a log on map 7

i tried all 3 firmwares the alpha beta, and release. currently on alpha

[Terry @ BMS]

Originally Posted by Xenozx1

heres a log on map 7

i tried all 3 firmwares the alpha beta, and release. currently on alpha

I don't see a WMI flow signal, but trims also seem too low for non-WMI. Does fluid come out during a test purge in the app?

[Terry @ BMS]

Originally Posted by 2021GT2

My problem is probably both. I run a 75/25 blend and the last time it went out it felt pretty hot. I have it placed right near the fuse box under a vanity cover.

The BMS solenoids at least can be serviced, open it up and see if the seal on the diagram is stuck. I've seen that before with some fluid mixtures.

Then as a test only run boost juice just to confirm whether the issue is the fluid itself.

[Xenozx1]

Originally Posted by Terry @ BMS

I don't see a WMI flow signal, but trims also seem too low for non-WMI. Does fluid come out during a test purge in the app?

no if I hit purge like 30 times in a row the pump doesn't make any noise but if I disco the pump and touch it to + - on my car battery it pumps. also selenoid doesn't click during purge either.

[Xenozx1]

just curious what i should check next? it’s another beautiful day and i can play with it some more