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Depending on the vehicle there are many wear points involved. There is wear at the valve seats, valve guides, valve stem, rocker arm to valve, rocker arm to pushrod, pushrod to lifter, lifter to camshaft and cam shaft. Some of these are eliminated if you have a overhead camshaft type engine. As the mileage piles up you may wear a few thousands on an inch at each wear point resulting in hearing ticking noises and loss of performance. With regular oil changes and proper adjustments you shouldn't have to keep adjusting them. Follow the manufacturer's recomendations.
What else can I help you with?
Can the valves be adjusted if so how?
can the valves be adjusted on the 454 7.4 engine
Can the valves be adjusted on 1998 454 7.4 vortex?
can the valves be adjusted on a 1998 454 7.4 vortex with the roller lifters
Can 2000 jeep 4.0 liter valves be adjusted?
No, the valves are not adjustable.
Can a 1999 Tahoe's valves be adjusted?
Yes they can.
How do you stop the lifters from ticking in a 94 ford explorer?
have your valves adjusted adjust your valves
Do the valves need to be adjusted on a 1991 Jeep 4.0?
No, the valves are not adjustable on a Jeep 4.0L.
Why do the valves raddle on take-off on your Toyota tacoma?
Either low on oil or the valves need to be adjusted
Does the Honda Odyssey have self adjusting valves?
Odyssey valves need to be adjusted every 100000 miles.
Why your Yamaha worrier 350 backfires?
Need to get your valves adjusted
Can you adjust the valves on 2.3 ford valves are noisy?
The valves can be adjusted on your 2.3 liter Ford engine. Valves that are noisy may be caused by a bad rocker arm.
What are the Suzuki valve clearances 2.5 6 cylinder?
the valves are not adjustable they have lifters on top of the valves and cant be adjusted
How often if ever do the valves on a 1996 Harley Fat Boy need adjusted?
they don't need adjusted if they are stock because they are hydralic
