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From my own exp, Gumout is among the WORST product on the world that I've ever used. The price, on the other hand, is dirty cheap but you always get what you pay for. You can read more details about gumout injector cleaner here: http://fuelinjectorcleanerreviews.com/gumout-fuel-system-cleaner-review/


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Have you ever opened up an engine that is using oil, in other words, oil blow-by past the rings. The piston with the oil consumption is clean where as those burning correctly have a layer of carbon on top of the piston. Now that is ordinary engine oil that has removed the carbon. Therefore I fail to see how a very diluted mixture of two stroke oil will ...


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The OBD2 code P0442 means that on your system you have a small air/vacuum leak. Apart from the seal on the gas gap, you must check the purge valve and the fuel tank pressure sensor are both working correctly. EVAP faults can be be notoriously difficult faults to pinpoint as the system only checks itself when the vehicle is actually operating and the ...


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There a several things, that I would check at first. Gas cap or the seal on it. The connection between gas tank and gas cap. The seal between gas tank and the fuel pump under the rear seat. Can not believe, there could be the leak somewhere else.


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I think it may be due bad fuel injectors. The problem is in the injectors. You should clean the injectors. Hope this will work for you.


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A 'sudden' drop in mileage means a component has failed, especially if it was some time after the service. The first thing to do in this sort of event is to do a leak-off test on the injectors. If an injector has failed this will show it. A faulty injector will allow a lot more fuel through, usually accompanied with black smoke from the exhaust. Second ...


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Mileage drop from 20 to 12 kmpl is certainly not your fault. And yes, driving habits really reflect your driving style, but 20 kmpl to 12?? I really don't think so unless you are a rally professional. We can start with the following steps. Needless to say, most of them. You might have already done most of it yourself. Hopefully this fixes your issue. ...


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Problems like this are addressed in Charles Probst's excellent reference, Bosch Fuel Injection & Engine Management. From what I can gather, the Mk1 Golf utilizes a basic K-Jetronic system illustrated in the diagram below1 (which operates on the principle of continuous injection). The stalling symptom is an indication that the air-fuel mixture is not ...


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My snowthrower is stored in the off season April thru Oct. The manual for the engine says run the engine 'til dry, remove the spark plug and shoot in some WD40.That is what I do. But the manual for the thrower itself says fill up the tank and add a stabilizer since air and moisture in an empty tank can cause corrosion and other issues. Which is better? ...


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Anything from OBDC? Sometimes it will record a pending fault that will not light up the "Check Engine" light. If you don't have an OBDC reader, most parts stored will read it for you. Check the Idle Air Control Valve by disconnecting the air hose going into it and plugging the hose. If it stops stalling, that's the problem, try removing the IAC assembly ...


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No. Because you need more Petrol per combustion stroke than Diesel. The air/fuel mixture for Petrol is about 15:1, whereas Diesel starts off at 18:1 and can go even leaner (more air, less fuel). That means that a 2000cc Diesel engine may burn 5ml of fuel per combustion stroke under operating condition X, whereas a 2000cc petrol engine will burn 6.5ml per ...


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Sound like you refueling control valve may be bad. This is a one way valve that connects the fuel tank to the EVAP Canister. It's purpose is to send vapors to the canister instead of the air when you are refueling. If it's plugged up it will not allow vapors to escape fast enough and cause the pump to shut off.


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I used to have this all the time with an old car of mine - in that case it was to do with the angle and shape of the filler pipe, which stopped the fuel from flowing freely into the tank. I used to work around it by only pulling the trigger halfway, so the fuel flowed slower out of the nozzle - this allowed it time to flow into the tank... As you say this ...


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I did some research and found this can be caused by a dirty throttle body. I removed the air intake piping and cleaned the butterfly valves with throttle body cleaner. All good now!


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There are no charts that I am aware of, but you can calculate the theoretical maximum efficiency by considering the following": the RPM current speed assume a volumetric efficiency of 100% Assume an ideal air/fuel mixture of 14.7/1 (for petrol engines) the weight of the car assume the car is traveling on a 100% level surface total volume of cylinders ...


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I think you can't use a single average value for all cars. Here are some variables that could greatly influence your program : Gear engaged (The same acceleration won't use the same amount of fuel) Type of fuel (petrol, diesel) Car characteristics (weight, aerodynamysn)



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