NANO

ENGINE 273 MPFI 111 ENGINE Valve Springs: • Check that each spring is in sound condition, free of any evidence of breakage or weakening. Remem- ber, weakened valve springs can be the cause of chaffer, not to mention the possibility of reducing the power output due to gas leakage caused by decreased seating pressure. • Spring Squareness: Use a square and surface plate to check each spring for squareness in terms of the clearance between the end of valve spring and the square. Valve springs found to exhibit a larger clearance than the limit must be replaced. spring squareness limit VALVESPRINGFREELENGTHMEASURMENT • Check valve spring free length. Sr. Item Std value Limit 1. Valve spring free length 41.15 mm 40.15mm 2. Valve spring preload(Kg) 24 mm 23 mm 3. Spring squareness limit 1.3 mm 2 mm