johanneswerner73

Insignia rough running and fuel consumption

My 2010 Vauxhall Insignia diesel has reduced engine power, check engine light, rough running, higher fuel consumption, and jerking during acceleration. It has 74161 km. Diagnostics suggest it's running rich. Could this be a defective injector?

A 2010 Vauxhall Insignia diesel exhibited reduced engine power, a check engine light, rough running, higher fuel consumption, and jerking during acceleration. Diagnostics indicated the engine was running rich, suggesting a possible defective injector. After a thorough inspection, a defective fuel injector was identified and replaced, resolving the issues and restoring the car's performance.

Did this summary help you solve your problem?

4 comment(s)

I drive an Insignia too and those symptoms sound familiar. I had something similar a few years ago, though not all the symptoms at once. Did you check the spark plugs?

Thanks. I haven't checked the spark plugs yet. Could you explain your experience and whether spark plugs were related?

The rough running and poor fuel economy were what I noticed first. The check engine light came on later. I'm no expert, but after checking forums, I took it to a workshop. They suspected the injectors. I suggest you do the same to prevent further damage.

I appreciate the advice. My mechanic agreed, and a thorough inspection found a defective fuel injector causing the rich running. Replacing the injector for 515€ fixed it. The car runs perfectly now.

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

VAUXHALL

community_crosslink_rmh_model

INSIGNIA