What Should Air Fuel Ratio Be At Idle at Debra Cunningham blog

What Should Air Fuel Ratio Be At Idle. Richer than that, and the engine dies easily when loads are. Great vacuum, exhaust temps look good, no misfires, and i dont overheat. I have increased the primary idle air bleed size, and decreased both sets of high speed bleeds. I could probably go a little leaner, but i know at 13.8 i. I run at ~14.7:1 at idle (when hot),. The overlap in your cam is allowing fresh air through and pulsing in the exhaust is sucking fresh air from that end too. This is largely dependent on the camshaft design, the valve overlap, and the ability of the injectors to deliver very short pulse width injections (somewhat difficult with large injectors), as well as the injector flow balance. In many cases, the idle stability will determine where we set the idle air fuel ratio. My engine seems to idle better when a/f ratio is 14.0 or leaner. I idle at 13.4 and 25 degrees timing.

I have increased the primary idle air bleed size, and decreased both sets of high speed bleeds. I could probably go a little leaner, but i know at 13.8 i. The overlap in your cam is allowing fresh air through and pulsing in the exhaust is sucking fresh air from that end too. Great vacuum, exhaust temps look good, no misfires, and i dont overheat. Richer than that, and the engine dies easily when loads are. My engine seems to idle better when a/f ratio is 14.0 or leaner. In many cases, the idle stability will determine where we set the idle air fuel ratio. This is largely dependent on the camshaft design, the valve overlap, and the ability of the injectors to deliver very short pulse width injections (somewhat difficult with large injectors), as well as the injector flow balance. I run at ~14.7:1 at idle (when hot),. I idle at 13.4 and 25 degrees timing.

Air Fuel Ratio PDF Physical Quantities Process Engineering

What Should Air Fuel Ratio Be At Idle I idle at 13.4 and 25 degrees timing. The overlap in your cam is allowing fresh air through and pulsing in the exhaust is sucking fresh air from that end too. This is largely dependent on the camshaft design, the valve overlap, and the ability of the injectors to deliver very short pulse width injections (somewhat difficult with large injectors), as well as the injector flow balance. I run at ~14.7:1 at idle (when hot),. I idle at 13.4 and 25 degrees timing. Richer than that, and the engine dies easily when loads are. I have increased the primary idle air bleed size, and decreased both sets of high speed bleeds. In many cases, the idle stability will determine where we set the idle air fuel ratio. Great vacuum, exhaust temps look good, no misfires, and i dont overheat. I could probably go a little leaner, but i know at 13.8 i. My engine seems to idle better when a/f ratio is 14.0 or leaner.