selina_wilson9

Peugeot 607 Misfire

I'm having trouble with my 2005 Peugeot 607 (gasoline engine). It has about 124,223 km on it. The engine runs rough, and the check engine light is on. When accelerating, the car jerks, and engine power is reduced. Error codes indicate combustion misfires. Could this be a defective fuel injector? Any advice on troubleshooting?

4 comment(s)

I haven't owned a Peugeot, but I had similar symptoms on my BMW 5 series. Rough idle, check engine light, and jerking under acceleration pointed to ignition issues. We considered coil packs but found it to be fuel-related. Have you checked the fuel pump pressure or the injector spray pattern? It may be worth investigating the fuel supply.

Thanks for the suggestion! Is there a way to check the fuel pump pressure and injector spray pattern myself, or does it require special equipment? I'm reasonably handy, but I don't want to cause damage.

Given the complexity and risk, I wouldn't DIY diagnose the fuel pump pressure or injector spray pattern. These tests need special tools and expertise. Considering the symptoms and error codes, a workshop visit would be best. They can pinpoint the cause of the misfires.

I took the car to a workshop, and they confirmed the injector was defective. The repair cost 515€, but the car runs smoothly now. Thanks for pointing me in the right direction!

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