Genuine Mitsubishi Cordia Valve Spring

Mitsubishi Cordia Valve Spring Parts Questions & Experts Answers

• Valve Springs
  MD073398
  Q: Why is the adjustment of the Exhaust Valve, Intake Valve and Valve Spring important during engine tune-ups on Mitsubishi Cordia?

  A:

  Adjust the valve clearance during an engine tune-up if the cylinder head work done affects the clearance. Before starting the engine, adjustments should be made when the engine is hot, after warm-up to the operating temperature. Removing the rocker cover to reset the valves is one maintenance method. Hydraulic lifters fitted to some late model engines generally don't require adjustment, but they might need bleeding of air at about 3,000 rpm. The removal of the valve spring and retainer is accomplished with the use of a valve spring compressor, after which, the camshaft and cylinder head can be removed. Each valve is visually-inspected for damage and replaced if necessary. To guarantee proper fitting of spring seats and valve stem seals, special tools are required. The colored end of the valve springs should be installed facing up and keepers should be installed on spring properly. After reinstalling the cylinder head, the hot engine valves are readjusted again. The inspection is to check each valve for damage, measure the valve margins and check if stem-to-guide clearance is OK. The valve face and seat must maintain consistent contact; if not, machining of the relevant sections may be required. We also check the heights and squareness of the valve springs and each engine has its own specific limit. Tension on the springs.