The 94 2.5L Wrangler's crankcase ventilation system typically involves:
* A hose from the valve cover: This hose routes to the intake manifold. Its purpose is to return blow-by gases (crankcase fumes) to the combustion chamber to be burned. This is the primary "emission hose" equivalent. It often connects near the throttle body or the base of the intake manifold. The exact location is difficult to pinpoint without a picture of your specific engine or a detailed diagram.
* Possibly a small breather vent: Some setups might have a small breather hose venting to the atmosphere (though this is less common on later models and may be plugged depending on the condition and modifications). This is usually a very small diameter hose, and its presence or absence is less critical for emission control than the primary valve cover hose.
To find the connection:
1. Locate the valve cover: This is the top of the engine, often with a bolt-on cap.
2. Trace the hose: Look for a hose leaving the valve cover. It should be relatively thick and likely made of rubber.
3. Follow the hose: See where it goes; it almost certainly connects to the intake manifold.
If you can't find it, a repair manual specific to your 1994 Jeep Wrangler 2.5L engine is invaluable. A picture of your engine bay would also help someone familiar with these engines to guide you more precisely.
