How do I know if my Honda needs a valve adjustment?
Valves can be loose and make noise but just because they may not be noisy does not mean they are correctly adjusted. Valves that are too tight will cause a rough idle but you won’t hear it. Also- when a timing belt on a dohc honda is stretched and/or loose it will sound like loose valves.
How often do you need a valve adjustment?
On pre-2006 models, they recommend a valve adjustment at 110,000 miles. And for newer ones, they recommend just listening for noise and adjusting when necessary. But they don’t make noise! Tom: In fact, as the valves get farther out of adjustment, they often get quieter!
How to measure and adjust the valve lash?
Measure the valve lash by inserting a feeler gauge between the rocker arm socket and crosshead. 5. If adjustment/resetting is required, loosen the lock nut on rocker arms and turn the adjusting screw Tighten the lock nut to 24 N·m (18 ft. lbs.) and recheck the valve lash. 6.
Where is the valve lash on a 24v engine?
Using the crankshaft barring tool, rotate the crankshaft one revolution (360°) to align the damper TDC mark to the 12 o’clock position. 7. With the engine in this position, valve lash can be measured at the remaining rocker arms: INTAKE 3–5–6 / EXHAUST 2–4–6.
When to do valve lash adjustment on Cummins?
2003-2011 CUMMINS CR VALVE LASH ADJUSTMENT NOTE: To obtain accurate readings, valve lash measurements AND adjustments should only be performed when the engine coolant temperature is less than 60° C (140° F). The 24–valve overhead system is a “low- maintenance” design.
When to set the Lash on the intake valve?
The best sequence to use when setting valve lash is to go by the firing order. This requires less turning of the crankshaft and will help ensure that valve overlap is not an issue. EO/IC rule (Exhaust Opening and Intake Closing). Set the intake valve lash when the exhaust valve is beginning to open.