× 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: gas fouled or black spark plugs
Posted to Technical Theory Forum on 3/26/2018 10 Replies

Normally-aspirated 347 CID putting out 450HP probably has a decent cam, which will result in reduced vacuum at idle and low RPM. The aftermarket TB injections I am familiar with are MAP-based, so the injection will respond to low vacuum by putting in more fuel... Login to read more.

10 Replies Received (View Replies)