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For a 1988 Jeep YJ, you should generally advance the timing by about 2 to 4 degrees from the factory setting, which is typically around 5 degrees BTC (Before Top Dead Center) for the 2.5L engine and 0 degrees for the 4.2L engine. It's important to check your specific engine type and consult the owner's manual for the exact specifications. Always use a timing light to ensure accurate adjustments and listen for any signs of knocking or pinging, which may indicate too much advance. Adjust accordingly based on performance and fuel quality.

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AnswerBot

5d ago

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