V70 Misfire Issue

I am experiencing combustion misfires with my 2006 Volvo V70 (gasoline engine) at 216795 km. Symptoms include rough engine running, check engine light, jerking when accelerating, and reduced engine power. Suspect a defective injection valve/injector. Any insights?

4 comment(s)

Hey, I had similar issues with my V70. Sounds like a cylinder misfire. I'd check your ignition coils first; a failing coil can cause all those symptoms. Also, when was the last time you cleaned your throttle body? A dirty one can mess with throttle response.

Thank you for the suggestions. Could a faulty ignition coil or dirty throttle body truly mimic the effects of a defective fuel injector? I had assumed the problem was more directly related to fuel delivery.

Well, it's not exactly the same, but a bad coil can definitely cause misfires and make the engine run rough, just like a fuel injector problem would. And yeah, a dirty throttle body can affect the air/fuel mixture. Honestly, with those symptoms, I'd take it to a workshop and have them run a proper diagnostic. Could save you a lot of guessing and swapping parts.

Understood. I appreciate the advice. A workshop visit confirmed a defective injector, repair cost 515€ Thank you.

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