Boost Solenoid - Subaru WRX Forum
 
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#1 Old 02-28-2011, 10:28 AM
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Boost Solenoid

Hey guys,
I've noticed while I'm in low boost, or in very low vacuum, I hear a faint ticking side from the passenger side of the car.

It's not lifter tick, it's not piston slap, I'm not an idiot- I know what that sounds like. But, I've been told the boost solenoid ticks faintly in our cars? I have an 06 WRX TR with 41k miles on it. And I was just curious if that's what the sound probably was.

It only happens between -3 lbs vacuum and 5lbs boost on light throttle. It almost sounds like our loud valvetrain, but I highly doubt I can hear that through the firewall..

Any suggestions?!

Thanks
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#2 Old 02-28-2011, 10:48 AM
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Could be the bcs OR a fuel injector.

Paul
2002 WRX Sold
2007 WRX Sold
2007 STi totaled
2007 Foz XT sold
2007 MS3
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#3 Old 02-28-2011, 05:19 PM
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Quote:
Originally Posted by pzr2874 View Post
Could be the bcs OR a fuel injector.
I thought about it being a fuel injector, but my AFR's aren't really any different than they've always been, so it's still doing it's job. Any other suggestions?
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#4 Old 03-01-2011, 05:56 AM
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Have anyone that you could switch the bcs out of ?

Do it for a day to see if it goes away.

Paul
2002 WRX Sold
2007 WRX Sold
2007 STi totaled
2007 Foz XT sold
2007 MS3
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#5 Old 03-01-2011, 05:16 PM
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I drove a stock WRX yesterday and it ticked as well. Must just be a regular thing? Haha.
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#6 Old 03-02-2011, 05:41 AM
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Injectors or cam-tick

Paul
2002 WRX Sold
2007 WRX Sold
2007 STi totaled
2007 Foz XT sold
2007 MS3
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#7 Old 03-02-2011, 10:39 AM
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Eh, it sounds more like an injector than a mechanical internal issue. Like I said, sounds normal I suppose. The stock WRX made the same sound, and I only have a turbo back exhaust. It's not like I'm driving a built Suby

Thanks for your help though!
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