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How To Replace A Mustang 2.3 Timing Belt
Pinto, was introduced in 1974 to replace the first-generation cars. At that time the Mustang inherited the Pinto’s 2.3L four-cylinder engine. The 2.3L engine continued to be used when the third-generation Mustang replaced the Mustang II in 1979. This engine, which was used until 1993, has an overhead cam operated by a flexible timing belt that must be changed periodically.
Instructions:
1.Open the hood. Remove the valve cover on top of the engine by removing the holding bolts with an adjustable wrench turned counterclockwise. Lift the valve cover from the engine and set it aside. Loosen the accessory belt tensioner on the front of the engine with an adjustable wrench turned counterclockwise and remove the belt.
2. Remove the timing belt cover from the front of the engine by loosening and removing the holding bolts with an adjustable wrench turned counterclockwise. Set the cover aside.
3. Remove the engine crankshaft pulley on the lower front side of the engine by placing a 22mm socket and ratchet on the center bolt of the pulley and turning it counterclockwise. Slide the pulley off the crankshaft and set it aside.
4. Remove the two bolts from the timing belt tensioner (which has been revealed after the timing cover has been removed) and remove the tensioner. Slide the timing belt off the cogged pulleys and discard it. Do not rotate the cam pulley once the belt has been removed or your engine will not run properly when the new belt is installed.
5. Place a new timing belt around the cogged pulleys. Replace the belt tensioner and tighten the two holding bolts clockwise with an adjustable wrench. Replace the crankshaft pulley on the engine crankshaft and tighten the holding bolt with a 22mm socket and ratchet in a clockwise direction. Replace the timing cover and tighten the holding bolts clockwise with an adjustable wrench.
6. Replace the accessory drive belt and tighten the tensioner in a clockwise direction with an adjustable wrench. Replace the valve cover and tighten down the holding bolts clockwise with an adjustable wrench.
7. Start the engine. Adjust the timing if the engine is running roughly by loosening the distributor holding bolt in a counterclockwise direction with an adjustable wrench. Rotate the distributor slightly in the direction needed until the engine is running smoothly. Tighten the distributor holding nut clockwise with an adjustable wrench.
Tips: If replacing the timing belt tensioner when replacing the timing belt, you can save a lot of work down the road.