× 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: I988 F150 Runs bad under load after tuneup
Posted to Technical Discussion Forum on 1/22/2019 1 Reply

check for a lobe worn off the cam on an exhaust valve. have had valves stick in the guides, due to stale gas. hope this helps Login to read more.

1 Replies Received (View Replies)