Valve Guide: Testing and Inspection

Valve guides, checking for wear

Due to slight difference in stem dimensions, only use intake valve in intake guide, and exhaust valve in exhaust guide.




- remove carbon
- install VW 387 and dial indicator
- insert new valve into valve guide
- valve stem end must be flush with valve guide end
- rock valve back and forth (arrow) against dial indicator. Dial indicator reading shows valve guide wear

Intake Exhaust
valve valve
Maximum dial 1.0 mm 1.3 mm
indicator reading (0.039 in.) (0.051 in.)