friedrich_vogel54
Honda Grace hybrid injector issue
Summary of the thread
A 2016 Honda Grace hybrid experienced a significant drop in engine performance, rough running, poor fuel economy, and jerking during acceleration, with a suspected defective injector causing the engine to run too rich. Similar symptoms were confirmed by another owner, who suggested checking the air-fuel ratio and spark plugs, as a faulty injector could lead to further damage. After taking the car to a workshop for diagnostics, the issue was confirmed to be a defective injection valve, which was replaced, restoring the engine's performance and fuel economy.
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4 comment(s)
friedrich_vogel54 (community.author)
Yes, I suspected the air-fuel ratio might be off. When you had the issue with your Grace, did you also experience increased fuel consumption? How did you eventually resolve the problem? Was it indeed the fuel injectors, or something else?
eliashimmel34
Yep, fuel economy went down the drain. The computer tries to compensate, and it just makes things worse. I wouldn't mess around with it too much, you could do some serious damage. I took it straight to my workshop, they did a proper diagnostic and sorted it out. It was the injectors in the end. Best get it checked by a pro.
friedrich_vogel54 (community.author)
Based on your advice, I took my Grace to the workshop, and after diagnostics, they confirmed that the injection valve was indeed defective. After replacing the faulty injector, the engine now runs smoothly, and the fuel economy is back to normal. The total repair cost was 515€ I appreciate your help!
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HONDA
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GRACE
eliashimmel34
Sounds familiar! I had something similar happen with my Grace. Reduced power, rough running. Have you checked your air-fuel ratio? A faulty injector can definitely mess that up. It might be worth checking the spark plugs too, just in case they're fouled up from the rich mixture. It could even damage the catalytic converter in the long run.