could some one help waht is the best way to test pisston rings with out taking the engine apart i dont mind taking apart but would rather be sure what my smoking is about wheather its turbo or rings it smokes very lightly but noticbel from cold and hot it not bad but its ther and from the breather pipe thers a bit of presuer if you put your hand over it if any one can help if thats normall for the breather pipe should have a littel pressure and when you rev it the pressure increases