Here's a general overview, but this is not a substitute for a professional repair manual specific to your Ranger's engine. Improper repair can cause significant engine damage. Consult a repair manual (Haynes or Chilton are good options) before attempting any of this.
Troubleshooting Noisy Lifters:
Before tearing into the engine, try these simpler fixes first:
* Oil Change: Low oil level or dirty oil is a common cause of lifter noise. Use the correct weight oil specified in your owner's manual. A fresh oil change with a high-quality filter might solve the problem.
* Oil Additive: Some oil additives are formulated to help quiet noisy lifters. This is a temporary solution and might mask a more serious issue.
* Engine Run Time: Let the engine run for an extended period (at least 15-20 minutes) to allow the oil to thoroughly circulate and potentially free up sticking lifters.
If these steps don't work, you'll likely need to replace the lifters:
Repairing/Replacing Lifters (requires significant mechanical skill):
1. Preparation:
* Safety First: Disconnect the battery negative terminal.
* Gather Tools: You'll need various tools, including wrenches, sockets, screwdrivers, a torque wrench, and possibly a valve spring compressor. Your repair manual will specify the necessary tools.
* Drain Oil: Completely drain the engine oil.
* Access: You'll need to remove parts of the valve cover, and potentially other components, to access the lifters. This varies based on the engine (2.0L, 2.3L, 2.8L, etc. – you need to know your engine type).
2. Removal:
* Valve Cover: Carefully remove the valve cover.
* Push Rods: Remove the pushrods (carefully keep them organized to avoid mixing them up). You might need to use a magnet to retrieve them.
* Lifters: Remove the lifters.
3. Inspection and Replacement:
* Inspect: Check each lifter for damage, collapse, or sticking.
* Replacement: Replace any damaged or suspect lifters with new ones. Use OEM or high-quality aftermarket parts.
4. Reassembly:
* Installation: Carefully install the new lifters.
* Push Rods: Reinstall the pushrods in their correct locations.
* Valve Cover: Reinstall the valve cover with the correct torque.
* Refill Oil: Refill the engine with the correct type and amount of oil.
5. Verification:
* Start Engine: Start the engine and listen for lifter noise. If the noise persists, there might be another underlying issue.
Important Considerations:
* Engine Type: The 1986 Ford Ranger came with several different engines. The procedure varies depending on the engine (2.0L, 2.3L, 2.8L, etc.). Knowing your specific engine is crucial.
* Repair Manual: A factory service manual or a reputable repair manual for your specific year and engine is absolutely essential. This will provide detailed instructions and torque specifications. Working without one risks damaging your engine.
* Mechanical Skills: Replacing lifters requires mechanical aptitude and experience. If you're not comfortable performing this type of repair, take your Ranger to a qualified mechanic.
This is a complex procedure with potential for serious damage if done incorrectly. Prioritize safety and consult the proper resources before beginning.
