So I have a 1998 Legacy 2.2. This is my first subaru timing belt change, but I've change half dozen timing belts on other makes and models. This thing is driving me nuts.
Car was running great previous to timing belt change. I've taken off and have redone the belt three times, all with it ending with a rough idle and a motor vibration.
I align the cam sprockets to rough noon (using hash marks, not the arrows), and put the crankshaft at the right spot too. I'm using a belt with marks, but I always make sure the tooth count is correct 44 on rhs (passenger), 40.5 on lhs(driver). The alignment is good, both before and after turning it back on.
I've watched videos, read many forum post and nothing seems to help it smooth out. It sounds and runs like the timings off, but everything is aligned.
Can the cams be 360 out of sync? I dont' think so, because the mark is the mark, right? But maybe not. When I put on the belt the passenger side cam is 'unloaded' no spring action when the hash mark is at noon...but the driver side cam is loaded (likes to jump off if I'm tweaking the belt too much without holding it in place).
The only other thing that comes to mind is with the battery being disconnected it reset the ecm, and thinks it has a clean throttle body, when it doesn't. So the mix is off. I've had other cars with that problem, but not sure about subarus. Does that happen with Legacys? I've seen conflicting posts with regard to cleaning throttle bodies. This would explain the rough running, but maybe not the motor vibration
Any help would be much appreciated.