Rosssub

I have the down pipe off, turbo is fine. No damage/blockage :-\

Ok, I have a factory primary bypass valve (BOV) on the way. When it arrives I\'ll fit that, then drop the down pipe and check backend of turbo. Thanks

I brought the car just over a month ago, HKS sequential BOV and sard vac hose kit. Drove it 300km home no worries. Joined this forum and realised it was boosting low on primary and secondary. I cleaned out the primary duty solenoid (full of sludge) and boost went up to 12psi primary and 16psi secondary. It lasted maybe a week going strong, then out of nowhere secondary boost was lacking again. Since loosing secondary power the HKS BOV started leaking under primary boost, So I removed the sard double \'T\' hoses from manifold to BOV to hose 10, and fitted a straight hose with restrictor pill from manifold to BOV (hose 10 mod)

No, found the one way valve lol.

Inside BBOD hose 11 goes to MAP sensor, hose 12 is vac feed for vacuum tank/ECV/ICV etc. If I\'ve got 11 & 12 the wrong way and that is a one way valve (because its not working), Then all my BBOD vac accessories will be getting boost instead of vac during/after VOD, because hose 12 (vac feed) is going straight to manifold. I know I\'m clutching at straws but does that make sense?

If it\'s sat for a year or more the oil has completely drained off and out of everything into the sump, i.e turbo bearings, cylinder bores etc. I would turn it over a good few times to get everything well coated again before it fires up, possibly by disconnecting coil packs?

Nah either way it still gets stuck in VOD, full throttle or back on with light throttle makes no difference. I\'ve been watching the boost gauge like a hawk and when it hit\'s vod the boost is dropping right to 0 before it starts climbing again.

Just did the 0-3500 test, boosting on pirmary for 5 minutes. Primary turbo burnt my hand, but the secondary turbo is cooler than the engine. So ECV is definitely closing.

I\'ve just tested my theory on the ECV positive pressure solenoid by \'T\'ing a compressor and a boost/vac guage through hose 2 into BBOD then blocking hose to ECV duty solenoid, while in \'D\' mode. The ECV positive pressure solenoid is definitly opening, closing and sealing. If I change from 1st gear near 4000rpm I lose all boost, boost wont come back till I get through to late 4th gear. If I near red line it in every gear, boost is instant and stable till 4000rpm then drops to 0-3psi. At 5000rpm boost slowly rises till 16psi at around 6500rpm. Same in every gear.

If the primary gate was held open (seized or plumbing issue) would I still get 12psi Primary and eventually 16psi secondary? I\'ve blocked the air intake with a vegemite jar and put compressor into BOV hose and the system is holding pressure, is there another way to test for boost leaks? So it\'s starting to look like the secondary turbo is nackered right?

Ah of course, hose 8 is controlled by \'supercharger pressure relief valve#1 solenoid which can switch from boost to vacuum. Boost from hose 3 through \'supercharger pressure relief valve #2 solenoid Vacuum through vac hoses from vac tank. But yeah, tried blocking secondary relief valve shut yesterday so not my issue. I\'m still thinking ECV only slightly opening due to no positive pressure hose 5 from the ECV positive pressure solenoid being stuck or sticky,

No I haven\'t tried holding the flap open with car running, spose I could put vac to bottom of actuator (hose 6) to open it to see if the secondary turbo warms up? While in \'D\' check the ICV valve is operating properly. Hose 8: vacuum opens the secondary relief valve, tested it yesterday. I could hook a vacuum gauge in line 8 to see if its doing anything?

Yes, I can hear the valve slapping shut when I move the rod with it disconnected from the actuator. My primary boost is responsive and stable at 12psi, if the ECV valve was loose/open on primary my boost would be slow to rise and unresponsive.

To identify your power steering leak, clean all power steering components and hoses. Then start car and turn the steering wheel from full lock left to full lock right a few times, stop the car then look for leak.

Just been reading your how to on the parallel thing Marky. If hose 6 partially opens the ECV for prespool then hose 5 positive pressure opens it fully, maybe my ECV positive pressure solenoid in the BBOD is faulty (not opening fully) and not letting boost pressure through to the top of the ECV actuator. So therefore under full boost on secondary my ECV is only partially opening? Inside the BBOD: Hose 2 feeds positive pressure to the ECV positive pressure solenoid, which then bleeds through the ECV duty solenoid into hose 10. Between the two solenoids is a \'T\' which feeds to hose 5, to the top of ECV actuator. So today I\'ll borrow a mates compressor again, I will block off the ECV duty solenoid. While in \'D\' mode I\'ll put compressor (15psi?) through hose 2 into BBOD to see if the ECV positive pressure solenoid is working properly.

Just tripple checked the ECV in \'D\' mode, is working correctly. Opens about 30mm with initial, then less and less each time it switches as the vac tank loses vacuum.

I\'ve been using D check with ignition on but engine off, all solenoid are switching, ICV is opening and closing and I can hear the vacuum/pressure switching from top to bottom hose on the ECV acuator. Should the ECV rod move from open to closed in D mode with the engine off?

Yes BBOD holds vacuum, I\'ve had it out 3 times now and always reconnect and double check the vac feed hose. Everything works fine with the green diagnostic plug connected and ignition on.

Airbox is clear with new filter, air inlet pipe and secondary inducer is clear and bonnet sound deadening cloth layer is intact. Secondary turbo fins are all intact and shaft spins freely. I\'m thinking maybe I have a faulty solenoid inside the BBOD that is not sealing properly, either the ECV positive pressure solenoid, ECV negative pressure solenoid or the ECV duty solenoid.

Make a bung for your fuel filler pipe that you can hook an air compressor up to, pump compressed air into the fuel tank until the leak becomes visible.

Rocker cover gaskets, how to: http://www.clubsub.org.nz/forum/index.php/topic,24153.0.html Power steering leak-Identify where it\'s leaking from. Possibly just a hose fitting, losened clamp or hole/split in a hose.

http://www.trademe.co.nz/motors/car-parts-accessories/subaru/engines/auction-576598739.htm

If the ECV wasn\'t seated properly wouldn\'t I be having trouble with primary holding/building boost? The primary boost is very responsive and holds steady at 12 psi. Primary waste gate plumbing is as it should be and restrictor pill is in the correct spot. I can hear the waste gate opening once secondary gets a bit of boost built up. Primary BOV is plumbed correctly, is leaking slightly but I\'ve tried blocking the primary BOV off and still didn\'t help my VOD issues

Are you losing any coolant, blown head gasket leaking coolant into a cylinder. Do a compression test.