Testing a nitrous solenoid
Thread Starter
Melting Slicks
Joined: Mar 2004
Posts: 3,472
Likes: 18
From: Lake Ozark, MO
Testing a nitrous solenoid
What is there to testing a NOS solenoid? I've been told mine is bad, but it still clicks and still sprays (not sure how much). What else can I check?
BTW - this is system is on a Hayabusa..worked great a couple of times, now when the button is pushed the bike just falls flat on its face. Thought maybe I had a leak and was shooting air, but have refilled the bottle twice..with same problem. I don't think pressure is an issue cause the temperature hasn't changed much since when it did work.
BTW - this is system is on a Hayabusa..worked great a couple of times, now when the button is pushed the bike just falls flat on its face. Thought maybe I had a leak and was shooting air, but have refilled the bottle twice..with same problem. I don't think pressure is an issue cause the temperature hasn't changed much since when it did work.
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
You can just disconnect the line going out of the solenoid and trigger it with the nitrous turned on and spray it into the air. That would tell if the nitrous is passing through the solenoid ok.
Melting Slicks
Joined: May 2002
Posts: 2,716
Likes: 121
From: Sulphur LA
St. Jude Donor '05-'06,'11,'13-'14,'16,'18,'19,'24, '25
Do as Norval says, we had this problem on our outboards; we found two problems the nitrous solenoids have an inlet and outlet so make sure they are correct and we had solenoids work just fine with out pressure on them but would not open with the bottle pressure on them. The solenoids we were using had a specific solenoid for the nitrous and a different one for the fuel. 
Safety Car
Joined: Aug 2001
Posts: 3,892
Likes: 13
From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Originally Posted by Hvymtlc5
What is there to testing a NOS solenoid? I've been told mine is bad, but it still clicks and still sprays (not sure how much). What else can I check?
BTW - this is system is on a Hayabusa..worked great a couple of times, now when the button is pushed the bike just falls flat on its face. Thought maybe I had a leak and was shooting air, but have refilled the bottle twice..with same problem. I don't think pressure is an issue cause the temperature hasn't changed much since when it did work.
BTW - this is system is on a Hayabusa..worked great a couple of times, now when the button is pushed the bike just falls flat on its face. Thought maybe I had a leak and was shooting air, but have refilled the bottle twice..with same problem. I don't think pressure is an issue cause the temperature hasn't changed much since when it did work.
Thread Starter
Melting Slicks
Joined: Mar 2004
Posts: 3,472
Likes: 18
From: Lake Ozark, MO
Thanks for the help. Too much fuel was the ultimate problem. Fogger nozzle had come loose from the bottom of the air box (couldn't see it - was spraying the engine - not in the airbox). Hitting the juice results in my injectors going to full rich, and with no nitrous to mix with - resulted in the huge flat spot / bog everytime I hit the button.
