The producer recommends that the timing belt on 1990-1998 1.8 Mazda Protégés get replaced at 60,000-mile intervals after a examine of the service historical past of this engine. The 1.8 has been discovered to be a freewheeling engine, which implies that if a timing belt failure ought to happen, there may be not a lot likelihood that it’ll trigger any injury. After putting in the new belt, nonetheless, it is a good suggestion to take a compression check to guarantee there’s no engine injury if the belt does come off.
1990-1998 Mazda Protege Change the Timing Belt Instructions
Carry and help the automotive on jack stands. Remove the proper splashguard. Remove the accent drive belts and the water pump pulley. Remove the crankshaft pulley bolts and the lock plate. Remove the crankshaft pulley. Remove the oil dipstick. Remove the valve cowl and the timing belt covers.
Flip the crankshaft till the keyway on the crankshaft sprocket is straight up and the dimple above and behind the keyway is lined up with the arrow on the block. That is top dead center on number one cylinder. Verify the camshaft sprockets for the timing marks to align. The correct aspect cam sprocket ought to have the “E” mark straight up and the “I” mark at the eight o’clock place lined up with the arrow. The left facet “I” mark is straight up and the “E” mark at the 5 o’clock place lined on the arrow.
Loosen the tensioner bolt and push away from the belt. Calmly tighten the bolt to carry it out of the method. Remove the timing belt. Be sure all the timing marks line up and set up the new belt beginning on the proper facet and dealing counter clockwise, retaining all the pressure on the proper facet between the crank sprocket and the cam.
Loosen the tensioner bolt and permit the tensioner to place stress on the belt. Frivolously tighten bolt. Install the pulley boss towards the belt on the crankshaft sprocket and the crankshaft bolt. Flip the crankshaft clockwise two turns and as soon as once more line up the timing marks. Loosen the tensioner bolt and permit it to take up the remaining slack in the belt after which tighten the bolt to 38 foot kilos of torque.
Install all elements in reverse order of removing and torque the crankshaft bolt to 122 foot kilos of torque.
[taken from ehow.com]