I have a 2001 Sentra 1.8 with 50,000 miles. Do the valves ever need adjusting? I have heard the following:
Owners Manual: 'Adjust the valves if they make too much noise.' Dealer Mechanic: 'Don't worry about it, we've never seen these go out of spec, and anyway we don't have the shims in stock.' Dealer Parts Rep: 'Those have hydraulic lifters, no adjustment'.
So, do I need to adjust the valves on the Sentra 1.8 engine? How often? How hard would this be as a DIY project?
Thanks.