After this repair, I degreased the engine bay and gently rinsed down all areas with a garden hose. Shop air was used to blow all water out of the spark plug tubes and any flat/low areas prior to starting the car. The engine was allowed to run for over an hour with the hood closed to dry out any excess moisture. Supposedly.
After 200 miles and 1 week, I started experiencing a light but noticeable misfire under moderate to heavy load conditions. A P0300 was observed, along with a P0301, P0302 and P0304.
Upon further inspection, I found that the water had damaged the ignition coils on cylinders 1, 2 and 4. The spark plugs also had corrosion. I ended up replacing three ignition coils (cyl 1, 2, 4) and all 4 spark plugs to resolve the issue.
We have washed many Honda, Toyota and Infiniti engines without issues. This is the first engine that has given me issues from cleaning the engine bay. So, I would proceed with caution on any engine where the coil pack design does not prevent water from entering the spark plug tube.
After 200 miles and 1 week, I started experiencing a light but noticeable misfire under moderate to heavy load conditions. A P0300 was observed, along with a P0301, P0302 and P0304.
Upon further inspection, I found that the water had damaged the ignition coils on cylinders 1, 2 and 4. The spark plugs also had corrosion. I ended up replacing three ignition coils (cyl 1, 2, 4) and all 4 spark plugs to resolve the issue.
We have washed many Honda, Toyota and Infiniti engines without issues. This is the first engine that has given me issues from cleaning the engine bay. So, I would proceed with caution on any engine where the coil pack design does not prevent water from entering the spark plug tube.
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