P1486 EVAP Leak Monitor Pinched Hose Found

SYMPTOM
P-1486 EVAP LEAK MONITOR PINCHED HOSE FOUND

WHEN MONITORED
After cold start, amb temp 40-90 deg/cool temp w/in 10 deg. If PCM suspect pinch hose, no fault until run evap purge flow mon. If no pass, fault set. Purge flow mon'd w/eng temp > 170 deg, closed loop, idling 2min, no lo fuel, MAP < 15.7 in merc, baro alt < 8000ft.

SET CONDITION
LDP must pass stricter evap system test first. No air flow through the evaporative system is detected by the evap monitor.

POSSIBLE CAUSES
- Fuel tank to evap canister hose pinched
- LDP pressure hose blockage
- Purge solenoid to evap canister hose pinched
- Leak detection pump blockage
- Evaporative canister blockage LDP side
- Evaporative canister blockage solenoid side
- EVAP leak monitor pinched hose does not reoccur