Intermittent Boost leak
#1
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Intermittent Boost leak
I can't figure this out. I'll be driving along then the turbo just starts making that high pitched whistle of the recirc when you're on the gas and no boost builds. Then randomly it will stop and I'll boost normally again. Noticed it does it more after building around 12-15 psi and shifting, then it leaks in the next gear for a bit then stops. 2009 LNF 2.0 Stock K04 with Aftermarket K&N Typhoon. Rest of the car is stock. 116k miles.
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I could take it to a local tuning shop and have them do it probably. I don't have a tune or an OBDII reader or anything. It might be the Bypass Valve failing, I did vacuum hose reroute that's posted on the forums where you take the vacuum hose closest to the dipstick and pull it out then pull out the one that goes into the Manifold and take 5" of hose and connect it directly from the port into the intake manifold and the valve closest to the dipstick and that seems to have worked for now
#6
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I could take it to a local tuning shop and have them do it probably. I don't have a tune or an OBDII reader or anything. It might be the Bypass Valve failing, I did vacuum hose reroute that's posted on the forums where you take the vacuum hose closest to the dipstick and pull it out then pull out the one that goes into the Manifold and take 5" of hose and connect it directly from the port into the intake manifold and the valve closest to the dipstick and that seems to have worked for now
#8
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The vacuum tank is a common boost leak location as the car ages. If you car is fine now and your fuel trims are good, then I wouldn't worry about taking it to a shop.
I have ran with it bypassed for 125k miles. Not problems that I can tell. The vacuum tank was not used on several other LNF cars so it's for sure not needed.
I have ran with it bypassed for 125k miles. Not problems that I can tell. The vacuum tank was not used on several other LNF cars so it's for sure not needed.