Re: Picking up a 99 Limited. Advice?
Valve stem seals can be done with the engine in place, i did them on mine. Normally if the valve stem seals are bad, you will see blue smoke out of the exhaust when letting of the accelerator. With the throttle plate closed, there is a higher underpressure in the inlet and oil will be sucked easier through the bad intake valve stem seals.
When you see blue smoke on acceleration, its normally the oil scraper ring on the piston. This would need dismantling of the engine.