jerrywss Posted May 22, 2021 Report Share Posted May 22, 2021 Hey, mine V70 has a massive boost leak. It should boost ~20psi, now it’s only 7-9 psi. And there is a sound of boost leak. I’ve checked every hose and pipe from the MAF to throttle body, replaced the intercooler, replaced the CBV diaphgram, checked the brake booster line, EVAP system and PCV system. Everything is fine. With MAF plug attached it stutters and hesitates during WOT, just when the boost reaches 9psi. Without MAF plug, it won’t stutter or hesitate at all, it just accelerates smoothly but the boost is still missing. It runs pretty rich all the time. Where the leak can still be?. Link to comment Share on other sites More sharing options...
Ihatespeedbumps Posted May 24, 2021 Report Share Posted May 24, 2021 Have you smoked tested the intake or just visually checked the hoses? Link to comment Share on other sites More sharing options...
jerrywss Posted June 3, 2021 Author Report Share Posted June 3, 2021 On 5/24/2021 at 5:02 PM, Ihatespeedbumps said: Have you smoked tested the intake or just visually checked the hoses? Not smoke tested, but pressure tested. Link to comment Share on other sites More sharing options...
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