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What should the cylinder compression pressure be in a 1991 dodge Dakota?

There's no single "should be" number for cylinder compression pressure in a 1991 Dodge Dakota. The correct pressure depends entirely on the engine size (e.g., 2.5L, 3.9L, etc.) and the specific specifications provided by Dodge for that engine.

To find the correct compression pressure range, you need to:

1. Locate your engine's specifications: Look for a sticker under the hood (often near the radiator), in your owner's manual, or a repair manual specific to your Dakota's year and engine. This will list the correct compression pressure range for your engine.

2. Consider the testing procedure: The way the compression test is performed dramatically impacts the results. Things like engine temperature, throttle position, and battery voltage all play a role. Always follow the instructions in your chosen repair manual.

Without knowing your engine size, any number I provide would be unreliable and potentially misleading. Using an incorrect value could lead to unnecessary repairs or misdiagnosis. Always consult your owner's manual or a reliable repair manual for your specific vehicle.