vincent_johnson5
Grandeur rough cold start
Summary of the thread
The 2014 Hyundai Grandeur is experiencing rough running during cold starts. The initial suspicion was a faulty cold start injector. After discussing potential causes, including the use of fuel injector cleaner and conducting an injector test, it was confirmed that the issue was indeed a defective cold start injector, which was subsequently repaired.
Did this summary help you solve your problem?
4 comment(s)
vincent_johnson5 (community.author)
I haven't tried injector cleaner yet. What kind of fuel system check are you referring to? Like an injector test, or something more comprehensive?
haraldkaiser49
Yeah, an injector test to see if they're spraying correctly. I ended up taking mine to a workshop, and it turned out to be a defective injection valve. Saved me a lot of headache trying to diagnose it myself.
vincent_johnson5 (community.author)
Thanks for the info. I'll take it to a shop and have them check the injectors. Turns out it was a faulty cold start injector, and the repair cost me 515€. Appreciate the help!
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
HYUNDAI
community_crosslink_rmh_model
GRANDEUR
haraldkaiser49
Hey, I had a similar issue with my Grandeur. Rough running on cold starts, you say? Have you tried any fuel injector cleaner or had the fuel system checked?