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5

It will not damage the engine at all. All that will happen is that it will run richer, thus using more fuel. If you did it for thousands of miles you'd probably end up with more deposits in the engine/exhaust, but even that is easy to sort.


3

(NOTE: Since you aren't talking about an ancient fuel filter, I'll change my answer ...) This appears to be BMW's version of a PCV (Positive Crankcase Ventilation) valve. It's purpose is to pull gasses which have passed by the piston rings and into the crankcase and force them back through the intake system to be burnt. It doesn't necessarily filter the ...


3

If you do a hard reset of the PCM, you're computer will be back to the baseline trim the computer starts with from the factory prior to any self-adjustment. This will get you to your desired trim much quicker than trims which have been in place for a while. To do a "hard reset", pull the negative side battery terminal and leave it off for 30 minutes. This ...


2

As the name implies, long term fuel trims usually require the vehicle to be driven for some distance in order to adapt and re-learn changes. Depending on the vehicle, it may even require a couple of hundred miles. That said, the fuel trims can be reset in many vehicles via certain scan tools, so one may not have to drive to let the LTFT's settle to their ...


1

Clear the continuous diagnostic trouble codes (DTCs) and reset the emission monitors information in the powertrain control module (PCM) was previously called PCM reset. All professional OBD scan tools and some consumer code readers support the clearing of continuous DTCs and resetting of emission monitors information in the PCM. Clearing the continuous ...


1

When the tank is going to be completely filled the proper procedure is to allow the pump to shut off automatically. Add no more fuel after this initial shut off. Over filling the tank by filling to "the brim" can cause the evaporative emissions system to be damaged or rendered inoperative. The system is designed to control and process fuel vapor not liquid ...


1

This sound similar to what I have experienced when there is rust or other "crud" in the bottom of the gas tank. Letting it get VERY low then filling it will stir up the "crud" and allow it to temporarily clog things up until it settles back down. To confirm if this is whats happening, try filling up before the fuel level drops below half a tank. Do that a ...


1

Subaru fires each cylinder 1 at a time but the Subaru is a boxer design which means that the cylinders are opposed to each other in pancake manner like Volkswagon, Porche and Corvair.... This allows them to have higher frequency vibration with less weight because they do not have to use counterbalance weights within the motor. Less weight and higher ...


1

You need to make sure the relay is the correct one for that circuit. There are several relays in the fuse/relay panel and while they can be moved to another circuit, they may not have the amperage capacity to handle the load, and they will overheat and fail. For instance the headlight relay is the same configuration, and it will plug into the EFI relay spot, ...


1

Nothing will be damaged if you run out of diesel, but the injector pumps don't work if there's even the smallest amount of air in them. Therefor it will be necessary to bleed the air completely from the fuel lines and injector pumps before the engine will start and run properly. Regarding junk in the bottom of the tank getting into the system, that's what ...



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