100% Free

No Scanner Needed

Carly logo
Prices

lara_ghost1

Lexus LX cold start injector issue

My 2004 Lexus LX with a gasoline engine is giving me fits! When it's cold, the engine runs super rough, and it struggles to start. I'm thinking it might be a dodgy cold start injector. Anyone else had this?

Summary of the thread

A 2004 Lexus LX was experiencing rough running and starting difficulties when cold, suspected to be due to a faulty cold start injector. Possible causes included insufficient fuel spray or injector leakage. While fuel injector cleaner was considered, the issue was confirmed by a workshop to be a defective cold start injector, which was replaced, resolving the problem.

Did this summary help you solve your problem?

4 comment(s)

barbaracrystal82

Rough running and hard starts sound like a fuel delivery issue, for sure. When you say "cold start injector", do you mean the actual cold start injector, or just one of the regular fuel injectors acting up? Have you tried any fuel injector cleaner in the fuel rail? It might just be a blockage...

lara_ghost1 (community.author)

Yeah, I was thinking it's the cold start injector, as in, the one specifically for cold starts. But I'm not sure how to test it. And about injector cleaner, can that actually help, or is it just snake oil? What do you reckon?

barbaracrystal82

Okay, if it's the actual cold start injector, those can be tricky. If it's faulty, it might not be spraying enough fuel, causing the poor starting and rough running. Or, it could be leaking, flooding the engine. Cleaner can sometimes help, but honestly, with those symptoms, and that mileage (175892 km!), it might be best to get it checked by a shop. Could be a bad injector valve.

lara_ghost1 (community.author)

I suspected as much. Took it to a workshop, and they confirmed the cold start injector was kaput. Cost me 515€ to replace, but she's running sweet as 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

LEXUS

community_crosslink_rmh_model

LX