hi all I just finished the hose job and now my primary turbo doesn't work! What's weird is that the very first run it worked fine but after that I get ZERO psi before 4.5k and 12psi after that...

the other 2 things that I noticed after the hose job:

1. increased engine noise
2. trouble starting

any ideas?

 

Maybe your charge control actuator is stuck open.

This would vent all of your boost until the charge releif valve closed @ 4500rpm.

 

are you referring to the TCA that's connected to the LIM?

 

for the boost problem there is a couple things it could be probobly the charge controll actuator on top pf the y pipe it has a butterfly that stays closed to close the pipe off so the charged air from the primary turbo dosent go back through the secondairy turbo. check this first then check the hose that comes off the wastegate actuator and goes to the primary turbo housing i think. any ways that hose has pills in it to restrict air flow so you can build boost faster otherwise the wastegate stays open.
it should be about a 6mm hose you have to use the stock hose there and on the turbo pre controll also both the hoses come off the actuators and go the same place on the primary turbine housing

 

CCA is on the charge elbow.
The charge elbow connects the Y-pipe to the secondary turbo.

 

okay I know where CCA is, it's the one right next to the CRV. Now how would I go about checking it? And why would it stop working even though I didn't mess with it?

I know it's not those 6mm wastegate and precontol hoses since I have my manual boost control valves there.

 

alright I checked the CCA and the rod pulls in when the engine is started...

I then got underneath the car to check on the TCA rod and see if the rod is just hanging, and it was on there tight with the C-clip...

guys I'm running out of ideas here, can somebody please help!??

 

^

 

maybe your precontrol is all the way open.
Have you check all the precontrol related solenoids and vacuum hoses?

Precontrols --> opens the door from primary to secondary turbo. If it flows all the exchaust flow to secondary, your primary would not have a chance to spools up.
Similar to this happened to me, when the precontrol pills is not there. feels like a single turbo...

 

Does the CCA rod pull in before the car is started or after? It should pull in before the car starts using vacuum stored in the vacuum chamber.

I had a similar problem and it would boost correctly the first time because the vacuum produced from idling would close the CCA door. When staying above the amount of vacuum needed to reclose the door, I would get 0 boost on primary.

If the CCA rod only pulls in after the car is started trace the vacuum chamber lines and make sure the lines are in the proper locations and the check value is installed in the correct direction and functional. Just to rule out the possibility if that looks good, check the vacuum chamber for leaks.

 

What do you mean by "it should pull in before the car starts"? I thought it should only pull in after the engine is started...

What I did was I looked at it before I started the engine, the rod was sticking out about 1cm. But after the engine is started, the rod is all the way in. Isn't it supposed to be like that?

And after the engine is shutted off, the rod is back to 1cm out again.

 

I didn't really mess with my precontrol valve during the hose job, since it was working fine before I assume that it's okay. As for the vaccum hoses, I just finished the hose job and I pretty much triple checked everything. My car feels more like VTEC on steroids rather than a single turbo...

 

With the engine off, but the key on the CCA should be closed. It will be using vacuum stored in the vacuum chamber instead of engine generated vacuum.

 

uhhh thing is, I just pulled off the rack and everything to fix an oil line from the metering pump. I guess I'll just have to make sure everything is on there right and tight, and check it again then.

ps. it should be holding vaccum because when I pulled off some of the hoses, I can hear the pssshhh depressurizing sound.

 

Hey Dragoneer,
I am done with the hose job and like you tripple checked everything. I thought I was doing fine and just had to dial in the boost with the manual boost controler but to no avail could I get what I wanted...changing throught the gears to redline I will get only 6psi on the primary...if I let the RPM drop below 4500 then boost again it will go all the way up to 13psi but never transitions...so I am guessing the secondary never comes on...Just thought I would let you know you're not alone while subscribing to this thread

 

app: I fixed my problem which turned out to be 2 hoses getting switched next to the charge control solenoid.