318 Idle issues
Don't know if you like experimenting?
Could tap on a 2 oz. lead wheel weight on the crank belt pulley starting at TDC.
Run it with the belt off, see if the shake gets better or worse.
Then move the weight 90° and try again better or worse.
180° then 270° etc.
If the engine smooths out at one of the positions, you may be on to something with the balance problem.
Fun to try:
☆☆☆☆☆
Don't know if you like experimenting?
Could tap on a 2 oz. lead wheel weight on the crank belt pulley starting at TDC.
Run it with the belt off, see if the shake gets better or worse.
Then move the weight 90° and try again better or worse.
180° then 270° etc.
If the engine smooths out at one of the positions, you may be on to something with the balance problem.
Fun to try:
☆☆☆☆☆