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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 219 (Engine Controls - Diagnostic Subroutines -- 6.0L (99P F450/550) Diesel) >> Hard Start/No Start Diagnostic Procedures >> 3. Intake/Exhaust Restriction >> Purpose: >> Notes

3. Intake/Exhaust Restriction: Purpose:: Notes

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This purpose of this test is to determine if an air intake or exhaust restriction is contributing to a no start or hard start condition. If the engine starts with a high air intake or exhaust restriction, a considerable amount of black/blue smoke is produced.

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