Kinsler_Handbook_#32 December 2017

Kinsler Fuel Injection, Inc, 1834 THUNDERBIRD TROY, MICHIGAN 48084 U.S.A. www.Kinsler.com Phone (248) 362-1145 Fax (248) 362-1032 106 BASIC ADJUSTMENTS FOR CONSTANT FLOW METERING IDLE SPEED Controlled by throttling the amount of air entering the engine, not by the amount of fuel. Set the idle speed by adjusting the throttle stops. If a slow or a smooth idle cannot be obtained, some of the throttle plates may not be closing properly... see UNI-SYN on Page #57 and THROTTLE SYN- CHRONIZATION AT IDLE on Page #56. With the vehicle warmed up and out of gear, set the “idle” fuel rate for the best throttle response, not a “nice clean idle”. Rapping the throttle open quickly should give a sharp response. So you don’t run a richer idle than necessary, lean the idle until you don’t have good response, then richen it up just enough to get good response again. If you are running an auto- matic transmission or a boat, adjust the hex link one or two more flats richer to compensate for when the vehicle is put in gear, thus loading the engine. © 2017 THROTTLE RESPONSE Governed by the idle fuel rate. Mechanical fuel injection doesn’t have an accelerator pump, so it’s necessary to put in a continuous “pump shot” by running a rich idle mixture. Smoke, spark plug fouling, and diluted oil due to prolonged periods of idling may occur with the barrel valve set for best response, so minimize idle time. The injection can be adjusted for a “nice clean idle”, but it will not have the best throttle response. (We offer a DUAL RATE IDLE SYSTEM, see Page #94). Jim Lape’s Top Alcohol funny car Jim Nader’s 5-time National Champion Pro Stock flat bottom drag boat. 500 CID big block alky burning Chev by Mickey Marollo Racing Engines. Kinsler constant flow fuel injection system. D = diameter of one rod end H = overall length of hex link with rod ends M = H D Rotating the hex link so that it moves the arm on the barrel valve in the same direction that it moves when the throttles are opened makes the idle richer. Note : Idle fuel rate has no affect on wide open throttle mixture. To adjust the “idle” fuel rate, mark one of the flats on the hex link to the barrel valve, then also measure the hex link’s center to center distance (“M” measurement). Keep a record of how many flats it takes to richen or lean the idle so the hex link can be brought back to the “As Shipped” setting. If you lose track, the “As Shipped” setting can be reset by using the “M” measurement and the mark on the flat. Never loosen the arm on the throttle shaft or barrel valve.

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