Engine - Rough Idle/Stalls/Residue On Dipstick

Article No.
85-25-12

ROUGH IDLE, STALLS AT IDLE AND DURING DECEL WHITE/BROWNISH RESIDUE ON THE OIL DIPSTICK AND OIL FILL CAP

FORD
1983-85 ESCORT, EXP

LINCOLN-MERCURY
1983 LN7; 1983-85 LYNX

CALIBRATIONS:
4-27A, T; 4-28A; 5-27T, 3-03A; 3-04

WARNING:
This modification is authorized only for the listed engines. Performing this modification on other engine calibrations is unauthorized and could create liability under applicable federal or local laws.

This article supersedes TSB article 85-20-10 (dated 10/01/85) and is being republished to revise service kit content.

Rough idle, stalls at idle and during decel or a white/brownish residue on the oil dipstick and oil fill cap may be due to the following:

^ Oil sludge may collect in the throttle body and air bypass valve, restricting air flow at idle and thereby causing the above concerns.

^ Excessive water/condensation mixes with oil, making it difficult to read oil level, and during cold weather, freezing dipstick into engine block. The dipstick may also rust.

A service kit, which contains revised crankcase breathing components, is available to correct these concerns. The kit also contains the installation instructions. However, the kit erroneously contains a fresh air tube that doesn't fit. Discard the (E6EE-6853-BA fresh air tube that is in the kit, and substitute a 13-1/2 inch length of 5/8 inch bulk heater hose, part number C9PZ-18472-E).

Authorized Modifications Decal:

Obtain an Authorized Modifications Decal and list the date, dealer number, and summary of alterations performed. Select a prominent place adjacent to the Vehicle Emission Control Information Decal suitable for installing the Authorized Modifications Decal. Clean the area, install the decal, and cover it with a clear plastic decal shield.

PART NUMBER PART NAME CLASS

E5FZ-6A666-A Service Kit CG
E3FZ-6750-A Oil Dipstick B
D8AZ-19A501-A Choke Cleaner A
D9AZ-19579-B Carburetor Cleaner A
355107-S7 Screw S

OTHER APPLICABLE ARTICLES: 85-20-10 (dated 10/85)

WARRANTY STATUS:
Reimbursable within the provisions of the Warranty and Policy Manual.

OPERATION: SP9973B85
TIME: 1.3 Hrs. DLR. CODING: Basic Part No. 6B890 - Code: L4