May 8, 2012 · I also want to integrate the HEI with an aftermarket Howell fuel injection system that is already installed. The vehicle is currently running and driving. Why did you add a relay to your …

Jan 22, 2008 · Looking for advice on my Howell Fuel Injection. 1986 CJ7 stock 258 135,000 miles. The Problem: The engine stumbles on acceleration, when leaving from a stop light it falls on it's face and …

Jun 1, 2011 · howell vs. affordable fuel injection Jump to Latest 31K views 22 replies 9 participants last post by sjracer Jun 3, 2011 sjracer Discussion starter

Mar 9, 2024 · If you have a Howell Fuel Injection system installed (especially in California), and your check engine light doesn't illuminate when the key is turned to the "On" position (before starting the …

Jun 27, 2015 · Howell fuel injection conversion questions.. Jump to Latest 5K views 8 replies 3 participants last post by bergovoy Jul 3, 2015 descanso1 Discussion starter

Aug 8, 2019 · The Howell TBI system replaces both fuel and spark with a mapped system tailored to a specific engine profile, making it suitable for a stock 4.2 motor. The Holley Sniper BBD EFI relies on …

Mar 11, 2015 · The Howell fuel injection kit and HEI distributor are considered good upgrades for a 4.2L engine. While a well-tuned Motorcraft 2150 carburetor is a cheaper and reliable alternative, the …

Sep 29, 2011 · Has anyone had a Howell fuel injection system on a 304? I'm wondering about mileage and Altitude compensation. Any knowledge would be appreciated. Thanks, John

Jul 8, 2015 · 1990 YJ, 4.2, 5 spd, 2 inch body lift, Howell fuel injection, Ramsey 8000 winch, Smittybilt bumpers :beerme:

Jan 19, 2020 · The howell uses GM TBI injection which is stupid simple but I hated howell as it doesn't control ignition timing. I would get a fuel pressure tester and make sure it is getting 9-14PSI of fuel …