[17] ENGINE AND EMISSION CONTROL - - EMISSION CONTROL <MPI> - EVAPORATIVE EMISSION CONTROL SYSTEM - PURGE PORT VACUUM CHECK | PRINT PAGE / INDEX / PRIOR / NEXT

| PURGE PORT VACUUM CHECK
| <4G63>
| Disconnect the vacuum hose (red stripe) from the throttle body and connect a hand vacuum pump to the nipple. Plug the vacuum hose (red stripe).
| Start the engine. Check that a fairly constant negative pressure is generated regardless of the engine speed. If no negative pressure is generated, the port is probably blocked and should be cleaned.
| <4G69>
| Disconnect the vacuum hose (between purge control solenoid valve and intake manifold) from the purge control solenoid valve and connect it to a hand vacuum pump. Plug the nipple from which the vacuum hose was removed.
| Start the engine. Check that a fairly constant negative pressure is generated regardless of the engine speed. If no negative pressure is generated, the port is probably blocked and should be cleaned.

[17] ENGINE AND EMISSION CONTROL - - EMISSION CONTROL <MPI> - EVAPORATIVE EMISSION CONTROL SYSTEM - PURGE PORT VACUUM CHECK | PRINT PAGE / INDEX / PRIOR / NEXT

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