philippeagle66
Cruze cylinder misfire diagnosis
Summary of the thread
A 2009 Chevrolet Cruze with high mileage is experiencing rough engine running, jerking during acceleration, and reduced power, indicating a potential cylinder misfire. The issue is suspected to be related to a defective fuel injector, which was confirmed through professional diagnosis. Replacing the faulty injector resolved the problem, restoring the vehicle's performance.
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4 comment(s)
philippeagle66 (community.author)
Yeah, I pulled the codes - points towards combustion misfires. Throttle response seems a bit sluggish, but not completely dead. If it is the injector, is there a way to confirm which one is bad before replacing them all?
richard_eagle1
Combustion misfires, eh? With those kilometers, I'd put my money on a dodgy injector. Testing them individually can be tricky without the right gear. Honestly, at this point, I'd say bite the bullet and take it to a workshop. They'll be able to properly diagnose it and confirm for sure. Better than throwing parts at it and hoping for the best.
philippeagle66 (community.author)
Thanks for the advice. Took it to the shop and you were spot on - defective fuel injector. Ended up costing me 515€ to replace. Runs like new now.
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CHEVROLET
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CRUZE
richard_eagle1
Sounds like a classic case of cylinder misfire, alright. Rough idling and power loss are dead giveaways. Did you try reading the error code? That'll give you a starting point, like which cylinder is acting up. Could be anything from a bad ignition coil to a fuel injector issue. Throttle response normal?