Mailbag: Leaning-Out a Holley 650 Double Pumper’s Rich Idle Fuel Mix
Q. I have a Chevy 350 engine with a Holley 650 double pumper and a COMP Cams Xtreme Energy camshaft in my street rod. I’m unable to get the idle […]
How to Diagnose Catalytic Converter Problems
There are a handful of telltale signs your catalytic converter is on the fritz. Poor acceleration when stepping on the gas pedal Noticeably less fuel efficiency Dark, sooty smoke exiting […]
Mailbag: What Does Carbon on Exhaust Tips Mean?
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re diagnosing carbon deposits on an exhaust system and resolving a rich air/fuel mixture. […]