Dieseling refers to the process used in diesel engines to ignite the fuel and keep the motor running. Fuel is injected into the combustion chamber in less than 1.5 milliseconds (one and a half thousandths of a second) – about as long as a camera flash. Unless, the fuel injectors are begining to leak, I know the pressure to them takes a … The primary factor used in determining the amount of fuel required by the engine is the amount (by weight) of air that is being taken in by the engine for use in combustion. Pizza Burner with Pizzaz!if you are going lean that can melt things. is it from belts being too tight? But what you're doing is sending a message to the computer (which controls the fuel-air mixture). System design and configuration affects and takes account of a variety of factors, including: If that is what happened and a piece of the hub is loose/missing, that'd explain why the pulley wobbles. Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector.. All diesel engines use fuel injection by design. This can mean easier engine starting, smoother and more consistent throttle response, better adaptation to a wider range of altitudes and ambient temperatures, smoother idling, decreased maintenance needs, better fuel efficiency, and cleaner exhaust. Gas engines can use gasoline direct injection, where the fuel is directly delivered into the combustion chamber, or indirect injection where the fuel is mixed with air before the intake stroke. In swirl injector, the spray cone angle is controlled by the ratio of the circumferential velocity to the axial velocity and is generally wide compared with nonswirl injectors.Fuel injection introduces potential hazards in engine maintenance due to the high fuel pressures used. Dieseling is rarely a problem with fuel injection because the fuel delivery is shut down as soon as the switch is off. Maintaining the correct fuel pressure is done by a fuel pressure regulator. View Profile

ENGINE RUN-ON, DIESELING -- RO-101 DIESELING, that nasty tendency of an engine to continue to run on, coughing and sputtering, after the ignition is turned off and there is no more spark.

Continuous injection systems can be multi-point or single-point, but not direct. When you cut the key, no power to the ECU hence no trigger. Since the early 1990s, almost all gasoline passenger cars sold in Many motorcycles still use carburetored engines, though all current high-performance designs have switched to EFI. Earlier systems, relying on simpler injectors, often injected into a sub-chamber shaped to swirl the compressed air and improve combustion; this was known as Swirl injectors are used in liquid rocket, gas turbine, and diesel engines to improve atomization and mixing efficiency. However in some aircraft, the electric backup pump doesn't provide enough pressure on its own to keep the engine running. Hopefully it has something to do with timing, thanks. I know on carbed engines this occurs from alot of heat in the cylinders and compression, burning fuel entering through the carbs, but never, ever heard a electronic fuel injected car diesel before! For a better experience, please enable JavaScript in your browser before proceeding.1990 Alfa Camaro Spider Super Sport Special American/Italian Edition. Fuel injected engines often have an electric fuel pump as a backup, to ensure fuel can be pushed through the metering system even if the engine driven pump fails. The most common automotive continuous injection system is the Bosch In piston aircraft engines, continuous-flow fuel injection is the most common type. Unless (and I'm just thinking crazy out loud here) someone bypassed the Motronic relay or something goofy like that so the ECU was always seeing power, but then it wouldn't have just started happening.1990 Alfa Camaro Spider Super Sport Special American/Italian Edition. turning the key off shuts down the ignition. I beleive your car is 'Motronic' thus should have the crank sensor that reads off the pulley (unless that is something you've modified...). Pizza Burner with Pizzaz!1990 Alfa Camaro Spider Super Sport Special American/Italian Edition. JavaScript is disabled. I will keep researching further however. It is an unfortunately common occurance for the hub of the pulley to crack at the keyway. The smallest quantity of fuel injected is one cubic millimetre – about the same volume as the head of a pin. Just like on today's cars, EFI uses an onboard computer, injector nozzle and multiple sensors to to reliably deliver exactly the right amount of fuel to get the most performance and efficiency out of your engine. I've researched dieseling, and as the billmorin4's post suggests, it shouldn't be possible to have dieseling with a fuel injected engine. Run-on by dieseling is caused by fuel in engine igniting without spark. Fuel injection systems can operate properly regardless of orientation, unlike carburetors which cannot operate beyond a limited angle from their normal upright position or in reduced gravity, as encountered in airplanes. The engine would load up with carbon which would retain heat and the gasoline would drip in from the carburetor and ignite. What you are saying is that with all the new goodies on it, it has run fine in the past but recently developed the 4K ceiling. Electronic fuel injection (EFI) is a high-pressure fuel management system.

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