Help with 1994 Legacy 2.2L engine rotation interference
Posted: Thu May 12, 2016 2:45 am
Vehicle: 1994 Legacy, 2.2L SOHC engine. Not my car.
Owner drove the car home and shut it off one night...Seemed normal.
The next day, tried to start it, and the motor would not turn. He thought it was a bad starter, so replaced it. Same symptom, starter trying to crank the motor, motor won't turn.
I looked and the timing belt jumped 6 teeth back at the crank, some oil residue around the front of the tensioner hydraulic actuator, so I figured the tensioner let the belt slip, and a piston was hitting a valve.
I installed a new belt, all new idlers, a new tensioner and hydraulic actuator.
On rotating the motor by hand, there is an obstruction that makes noise, and feels to me like a piston hitting a valve, but it it happens when the crank gear is lined up at the timing mark, when all the pistons are in the middle of their travel.
The motor will rotate a certain distance in either direction, but eventually won't go past a certain point. I have heard that this may or may not be an interference motor, and that a cracked flex plate might be binding with the block casting.
Any ideas from anyone what this might be?
Mike
Owner drove the car home and shut it off one night...Seemed normal.
The next day, tried to start it, and the motor would not turn. He thought it was a bad starter, so replaced it. Same symptom, starter trying to crank the motor, motor won't turn.
I looked and the timing belt jumped 6 teeth back at the crank, some oil residue around the front of the tensioner hydraulic actuator, so I figured the tensioner let the belt slip, and a piston was hitting a valve.
I installed a new belt, all new idlers, a new tensioner and hydraulic actuator.
On rotating the motor by hand, there is an obstruction that makes noise, and feels to me like a piston hitting a valve, but it it happens when the crank gear is lined up at the timing mark, when all the pistons are in the middle of their travel.
The motor will rotate a certain distance in either direction, but eventually won't go past a certain point. I have heard that this may or may not be an interference motor, and that a cracked flex plate might be binding with the block casting.
Any ideas from anyone what this might be?
Mike