ok so i got my car back and its runing perfect... the only problem is that the turbo its not spooling.... there is no codes/engine light but its just not spooling... any ideas??

 

Not at all or just not until high rpms?

 

You mean you're not building boost or the turbo is not spinning?

 

it spools about 3psi-4psi and thats it... not even at WOT... (i just tried it once and it didnt spool...only 3-4psi...) havent tried high RPM since i have a new build motor

 

Can you bring it back to where you got it back from?

 

What kind of blow off valve are you running? On my hks there was a rubber gasket that was loose and I could only boost to like 3 psi. Could be something dumb like that.

 

i can but the problem is that its about 45 min away and if its something stupid i prefer doing it myself u know...

stock BOV

 

How hard are you getting into the throttle? Stuck wastegate? Lines buggered up on the boost solenoid up top or wastegate solenoid under the turbo?

 

well im not trying to push the car just yet but i tried to boost it and it wouldnt... ill check the lines but they seem fine when we were getting the motor together..

 

vacuum issue or boost leak

 

If you took the WG solenoid off, make sure you didn't swap two of the three. It'd be pretty easy to do since it's so hard to get to.

 

what do u mean two of the three?

 

Look at the attached vacuum routing diagram. Item 10 is the wastegate actuator. There are 3 vac lines and one electrical connection to it. One to the WG actuator, one to the inlet side of the turbo, one to the outlet side. Save the file & print it for reference.

I'd also check item 7, BPV solenoid routing.



(1) Evaporative Emission (EVAP) Canister Vent Solenoid Valve
(2) EVAP Canister
(3) Non-Return Valve
(4) EVAP Canister Purge Solenoid Valve
(5) High Pressure Fuel Pump
(6) Camshaft Position (CMP) Actuator Solenoid
(7) Charge Air Bypass Valve Solenoid
(8) Turbocharger Bypass Valve
(9) Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor
(10) Turbocharger Wastegate Actuator
(11) Turbocharger Wastegate Diaphragm Valve
(12) Camshaft Position (CMP) Sensor
(13) Ignition Coil/Module and Spark Plug
(14) Fuel Injector
(15) Charge Air Cooler (CAC)
(16) Intake Air Pressure and Temperature Sensor
(17) Throttle Body (TB)
(18) Manifold Absolute Pressure (MAP) Sensor
(19) Fuel Rail Pressure (FRP) Sensor
(20) Engine Coolant Temperature (ECT) Sensor
(21) Engine Exhaust Manifold
(22) Turbocharger
(23) Heated Oxygen Sensor (HO2S) 1 and 2
(24) Catalyst
(25) Crankshaft Position (CKP) Sensor
(26) Fuel Pump Module
(27) Accelerator Pedal
(28) Theft Deterrent
(29) Data Link Connector (DLC)
(30) Malfunction Indicator Lamp (MIL)
(31) GMLAN Serial Data
(32) Engine Control Module (ECM)

 

I agree with boost leak.

 

ok all the vacum lines look fine and in there place... i cant really hear any boost leak thu... so im running out of ideas of what could it be...

 

You need to do a boost leak test. You're not going to hear it when you're driving unless it's huge. Build a tester and borrow an air compressor from someone if you don't already have one. Didn't ItalianJoe build this motor for you? Why isn't he helping you with this?

 

what are some specs on this? turbo? wastegate (internal external)? wastegate spring? etc etc?

 

stock turbo