mercury Workshop Repair Guides

Mercury Workshop Service and Repair Manuals

Turbo Boost Control Solenoid Valve <--> [Wastegate Solenoid] > < Turbocharger - Overboost Warning Comes On|Page 3734
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Wastegate: Testing and Inspection

1.

Disconnect wastegate actuator hose at turbocharger fitting.

2.

Connect pressure diagnostic gauge T79P-6634A or equivalent to actuator hose.

3.

Apply 15 psi to actuator and trap. If pressure drops below 2 psi after 2 minutes, replace turbocharger assembly.

4.

Release pressure from actuator, then raise and support vehicle.

5.

While applying 5 psi to wastegate actuator, observe actuator link and the wastegate lever. The link should rotate the lever smoothly when 5 psi is
applied.

6.

If lever and link do not operate smoothly, replace turbocharger assembly.

Turbo Boost Control Solenoid Valve <--> [Wastegate Solenoid] > < Turbocharger - Overboost Warning Comes On|Page 3734