× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: GM Direct Injection Injector Replacement
Posted to Technical Theory Forum on 10/14/2023 2 Replies

I completely agree with the carbon on the intake valves as a potential cause. I failed to disclose that the rough idle is more prevalent at cold start, which aligns with carboned up valves. Pulling the intake plenum is the next step in my diagnostic process. ... Login to read more.

2 Replies Received (View Replies)