Engine - Hard Start After Hot Soak

87ford14

HARD START AFTER HOT SOAK - Article No.
5.8L AND 7.5L ENGINE WITH HOLLEY 87-19-13
4V CARBURETOR - OVER 8500 LBS. GVW


LIGHT TRUCK: 1983-87 E SERIES, F SERIES

ISSUE: Hard starting at normal engine operating temperature after a 15 to 60 minute hot soak may be caused by fuel vapor getting to the engine through the fuel bowl and evaporative emissions system. The fuel vapor will cause an over-rich engine during restart. Volatility of gasoline may also cause increased amounts of vapor when gasoline is warm. The affected vehicles are 1984-87 E and F Series with a 5.8L engine and Holley 4V carburetor and 1983-87 E and F Series with a 7.5L engine and Holley 4V carburetor.

ACTION: To correct this, install a Hot Idle Compensator (HIC) valve using the following service procedure.

5.8L Engine

NOTE: Use original production PCV line.

Figure 10:

1. Assemble HIC valve (E1TZ-9B532-A) and Tee (379507-S), Figure 10.

2. Install the HIC valve in the PCV line, Figure 10.

NOTE: Position the HIC valve in the PCV line over exhaust heat cross-over and under spark plug wires.

7.5L Engine

1. Remove steel PCV line.

2. Install a new PCV line (E6HZ-6A664-A). The new PCV line fits from the PCV valve to the front of the carburetor. PCV line must be routed along the right rocker arm cover under spark plug wires.

3. Assemble HIC valve (E1TZ-9B532-A) and Tee (379507-S), Figure 10.

4. Install HIC valve in the PCV line, Figure 10.

NOTE: Position the HIC valve in the PCV line over exhaust heat cross-over and under spark plug wires.

PART NUMBER PART NAME CLASS

E1TZ-9B532-A HIC Valve C
379507-S Tee RS
E6HZ-6A664-A PCV Line CQ

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Eligible Under Basic Warranty Coverage
OPERATION: SP871913A
TIME: 0.4 Hr. - F Series 0.6 Hr. - Econoline DLR. CODING: Basic Pan No. 9510 - Code: H5