Honda accord 2008

Question

Hello I have a 2008 honda accord V6 2 dr automatic. 197k mileage, always had work done by the dealer.On10/2022 I had my car towed to the dealer for an engine light. The dealer got the following codes P3411,P3497,P0301..

they replaced all 6 spark, 2 gasket heads

Replaced powersteering ra k

Replaced oil pan gasket

Now 2 weeks ago engine light turns on again, code P0301. Mechanic writes misfire cylinger 1 removed, spark plug found contaminated with oil. Recommend piston ring repair

I was researching the 3 possible causes for spark plugs that have oil.

1. Piston rings

2. Value steam seals

3. PVC system

So to rule out if it is the piston ring issue. I need a leak down test to perform a relative compression check. to rule out if its a piston ring issue.

In 10/2022 I had major service. All 6 spark plugs were replaced. I don't think they replaced the value seals, which they could have done when they changed all 6 spark plugs.

Unsure what to do. My car looks great, excellent condition. I don't want to Sal age it. Is my motor gone. They changed out 1 spark plug and it runs. But I'm afraid it won't last. Help

scottykilmer · Answer

Well here's the problem. If it's not the PCV valve would you can easily change out then? It's internal to the engine and either way it would have to be rebuilt. And diagnosing it isn't that easy because if you do a compression test, it's only going to test the compression ring. Realize under that our oil control piston rings, which if they're worn it will burn oil, but it will not lose compression because it's a compression ring can be okay. I've often seen that. But either way you'd have to tear the engine apart to fix it. I don't know if it's worth doing really on something that old

Kaizen · Answer

1. Piston rings: probably not worth it. Engine would need to be rebuilt.

2. Valve stem seals: maybe, maybe not. I don’t know how easy it is to change seals out for that engine. If it is easy and cheap, then yes. Otherwise no.

3. PCV valve: This would probably be my first attempt, since it is a relatively cheap and easy fix for many cars (it could be expensive if the PCV valve is hidden, in which case no.)