Mitsubishi S3L2 / S4L2 — Valve clearance adjustment
Adjustments · Cylinder head / valve mechanism
For the Mitsubishi S3L2 / S4L2, from the Mitsubishi service manual.
Applies to: Mitsubishi S3L2, Mitsubishi S4L2
Before you start
- Make an adjustment to the valve clearance when the engine is cold.
- After adjusting all cylinders, turn crankshaft two or three times and re-check valve clearance.
Procedure
- Slightly loosen cylinder head bolts and retighten to specified torque in number sequence.
- Find TDC compression position for No. 1 piston using the TDC mark on the crankshaft pulley.
- Loosen lock nut for adjusting screw; insert feeler gauge between rocker arm and valve cap.
- Adjust valve clearance by turning adjusting screw; hold screw and tighten lock nut.
- Turn crankshaft 180° and adjust remaining cylinders in firing order.
Tools required
- feeler gauge Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Valve clearance (both inlet and exhaust valves): 0.25 mm (0.0098 in.)
- Cylinder head bolt tightening torque 9 ± 0.5 kgf·m (65 ± 4 lbf·ft) [88 ± 5 N·m]
Full service-parts list: Mitsubishi S4L2 →
Source: Mitsubishi service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.