1. Introduction
This manual provides detailed instructions for the installation, function, maintenance, and specifications of the ACP FM-EO101 Engine Crankcase Breather Hose. This component is designed as a direct replacement for specific Ford Bronco, Ford Mustang, and Mercury Cougar models, ensuring proper engine ventilation.
2. Product Overview
Figure 2.1: The ACP FM-EO101 Engine Crankcase Breather Hose. This image displays the black, molded rubber hose with a distinct bend, designed for specific engine bay routing.
The ACP FM-EO101 is an engine crankcase breather hose, specifically designed to connect the oil cap to the air cleaner on 260/289 engines. It is engineered to be a factory-correct replacement, matching the original size, shape, and molded bends for a precise fit and optimal performance.
- Purpose: Facilitates proper crankcase ventilation, preventing pressure buildup and ensuring clean air circulation within the engine system.
- Compatibility: Suitable for Ford Bronco (1966-1968), Ford Mustang (1964-1968), and Mercury Cougar (1967-1968) models.
- Design: Features factory-correct size, shape, and molded bends for accurate routing and secure connection.
3. Installation
Proper installation of the breather hose is crucial for its functionality and the overall health of your engine. Follow these steps carefully:
- Preparation: Ensure the engine is cool before beginning. Gather necessary tools, which may include pliers or a flathead screwdriver for hose clamp removal (if applicable).
- Locate Existing Hose: Identify the current crankcase breather hose, typically found in the engine bay connecting the oil cap to the intake air cleaner.
- Remove Old Hose: Carefully disconnect the old hose from both the oil cap and the air cleaner. If hose clamps are present, loosen or remove them. Inspect the connection points for any debris or damage.
- Install New Hose: Position the ACP FM-EO101 hose. It is designed to fit precisely. Connect one end to the oil cap and the other end to the intake air cleaner. Ensure the molded bends align with the original routing to prevent kinking or strain.
- Secure Connections: If your vehicle uses hose clamps, re-install and tighten them securely at both connection points. Ensure a snug fit to prevent air leaks.
- Final Check: Visually inspect the installed hose to confirm it is properly seated, not kinked, and all connections are secure.
This hose is designed to install directly in the engine bay between the oil cap and the intake air cleaner, replacing a worn or brittle hose line to restore original appearance and functionality.
4. Function and Operation
The engine crankcase breather hose plays a vital role in the positive crankcase ventilation (PCV) system. Its primary function is to route blow-by gases (unburnt fuel and exhaust gases that escape past the piston rings) from the engine crankcase back into the intake manifold to be re-burned. This process:
- Reduces Emissions: Prevents harmful gases from being released into the atmosphere.
- Maintains Engine Cleanliness: Removes moisture and contaminants from the crankcase, preventing sludge buildup and oil degradation.
- Prevents Pressure Buildup: Relieves excessive pressure in the crankcase, which can otherwise lead to oil leaks and damage to engine seals.
A properly functioning breather hose ensures efficient engine operation and contributes to the longevity of engine components.
5. Maintenance
Regular inspection of the crankcase breather hose is recommended to ensure its continued performance and prevent potential engine issues. While the hose itself requires minimal maintenance, periodic checks are important:
- Visual Inspection: Periodically check the hose for signs of wear, cracking, brittleness, or collapse. Look for any oil residue around the connections, which could indicate a leak.
- Hose Flexibility: Gently flex the hose to check for pliability. A brittle or hardened hose is prone to cracking and should be replaced.
- Connection Security: Ensure that both ends of the hose are securely attached to the oil cap and air cleaner. Re-tighten clamps if necessary.
- Cleaning: If the hose exterior becomes dirty, wipe it clean with a damp cloth. Avoid using harsh chemicals that could degrade the rubber material.
Replace the hose immediately if any signs of damage or degradation are observed to maintain optimal engine performance and prevent vacuum leaks.
6. Troubleshooting
Common issues related to a faulty or worn crankcase breather hose include:
| Symptom | Possible Cause | Solution |
|---|---|---|
| Engine running rough or misfiring | Vacuum leak due to cracked or disconnected hose. | Inspect hose for cracks or disconnections. Replace if damaged, re-secure if loose. |
| Increased oil consumption or leaks | Clogged or damaged hose leading to crankcase pressure buildup. | Check hose for blockages. Replace hose if damaged or brittle. |
| Check Engine Light (CEL) illuminated | System running too rich/lean due to unmetered air from a vacuum leak. | Scan for diagnostic trouble codes. Inspect and replace the hose if it's the source of a vacuum leak. |
| Visible cracks or brittleness on hose | Normal wear and tear, exposure to heat and oil. | Replace the hose immediately to prevent further issues. |
If troubleshooting steps do not resolve the issue, consult a qualified automotive technician.
7. Specifications
| Attribute | Detail |
|---|---|
| Manufacturer | ACP |
| Part Number | FM-EO101 |
| Item Weight | 4.8 ounces |
| Package Dimensions | 11 x 5 x 2 inches |
| ASIN | B0B6WS82WN |
| First Available | July 18, 2022 |
| Material | Molded Rubber (typical for breather hoses) |
| Application | Engine Crankcase Breather |
| Vehicle Compatibility | Ford Bronco (66-68), Ford Mustang (64-68), Mercury Cougar (67-68) |
8. Warranty and Support
For specific warranty information regarding the ACP FM-EO101 Engine Crankcase Breather Hose, please refer to the documentation provided at the time of purchase or contact the manufacturer directly. Warranty terms typically cover defects in materials and workmanship.
For technical support or further assistance, please contact ACP customer service or the retailer from whom the product was purchased. When contacting support, please have your product model number (FM-EO101) and purchase details readily available.
