300 Pro Max

[Va.Bullet]

Don I am aware this motor is off base on this forum but I would like some input from your Merc expertise. Other than pitting issues on the steel drive shafts does this motor have any other major concerns I should be on the lookout for? It's a late 98 model. 500 hrs. or so. I have not done a leakdown test on it. Compression check was close to factory specs. I have run Amsoil H-P Injector in it for 6 Yrs. and the usual maint. religously. Thanks

[EuropeanAM]

Other than driveshaft pitting....

Regular maintenance is the key. Inspect all oil and fuel lines regularly.... anything brittle, hard, or showing signs of deterioration should be replaced.

A leakdown test would certainly give you an accurate measure of the engine's "combustion chamber health".