2009 Honda Odyssey
Mileage
237,706
Service Date
4/23/2026
Services Performed
- Removed and compared cylinders 1 & 4 spark plugs, finding that they are burning evenly and show no signs of cylinder damage, etc. Tested and found that the engine is idling high due to improper engine vacuum. Performed a metered smoke induction test to find that there are no external vacuum leaks that are causing the lean condition. The valve cover that we replaced contains the pcv valve and is the source of the issue…..we will need to replace the aftermarket valve cover with an OEM valve cover assembly.
Scott R. gave our service a 5 star review on 4/23/2026
