What causes injector dribbling?
The needle shutdown of fuel injectors leads to an undesired fuel dribble that forms unburned hydrocarbons and decreases the engine thermal efficiency in modern engines. Meanwhile, the dripping of undisturbed liquid column with a long residence time of fuel dribble occurred in the second mode.
Can you fix a leaky fuel injector?
Fuel injectors are often needlessly replaced when they develop a leak. Unless the body of the injector is leaking, which is rare, replacing the O-ring seals is all that is needed. The injectors are all held in place by a common injector-rail. To remove one injector requires removing the rail.
What is the code for a bad fuel injector?
The most common fault codes associated with a clogged fuel injector are P0171 and P0174, which indicates the engine controller is seeing a lean condition. It is also possible to see fault codes for a rich condition if the injector is leaking or not atomizing correctly.
Why is there no fuel in the injectors?
The tractor in question has not been started for three years. It is quite common for the components of a stood injection pump to seize. Inside the injection pump there is a rack which engages with pinion teeth on the elements, rotating the elements which adjusts the amount of fuel delivered from zero to full depending on the engine requirement.
Why do I have air in my injector lines?
Here is the process for bleeding the air from injector lines on a 6.9 or 7.3 IDI diesel engine. If you have been cranking and cranking and cranking your IDI, and it never seems to catch, then you might have air in your injector lines. The Injector Pump (IP) creates hundreds of PSI of pressure in the injector lines.
What should I do if my fuel injector breaks?
A good kit (like this OTC set) will include various adapters to allow you to work on most fuel injected vehicles. Fortunately, most fuel injector issues can be fixed with a professional cleaning or replacement of the O-rings if a leak exists there. But when a fuel injector cracks or breaks, replacement is necessary and it can be expensive.
What’s the best way to crack an injector line?
Once the spurting fuel is consistent (not just random bubbles), use the 5/8″ wrench to tighten the end of the injector line on the injector. The quicker you torque it down, the less likely the fuel is going to work its way out of the crack, and the less likely it will lose its prime.