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Thread: blow off valve not sounding

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Posts: 1-10 of 19
2010-05-15 05:03:04
#1
blow off valve not sounding
as posted my bov is not sounding off have it hooked up to the manifold under the throttle body but still nothing? FYI im holding boost just fine
2010-05-15 05:03:32
#2
its an hks ssqv black limited
2010-05-15 05:04:09
#3
change the vacuum source and see what happens.
2010-05-15 05:07:04
#4
Just because you cannot hear it does not mean it is not opening....

Have you used a vacuum pump to make sure it opens? Is it recirculated?
2010-05-15 06:03:43
#5
not recirculated. have not used a pump how do i test it?


where is another good vacuum source i can use?
2010-05-15 07:53:21
#6
Vacuum line to the fuel pressure regulator.

Your vacuum line must come from between the head and the throttle plate, before the throttle body (i.e between the compressor outlet and the throttle plate) won't work.
2010-05-15 14:09:07
#7
tap the brake booster line before the check valve.
2010-05-15 14:19:03
#8
Originally Posted by Cozzm0_AU
Vacuum line to the fuel pressure regulator.


Originally Posted by cortrim1
tap the brake booster line before the check valve.
Do this, or the charcoal canister vacuum line.
2010-05-15 17:25:15
#9
i have it on where the top hose for the charcoal can goes to the tb
2010-05-15 17:33:31
#10
Make sure it sees vacuum with the throttle plate closed.
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