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1

A sputtering (misfiring) engine indicates insufficient fuel/too much air In the situation described, this sounds like an issue pertaining to low fuel pressure since the car doesn't suffer as much when the fuel tank is full (higher in-tank fuel pressure). The following culprits spring to mind: a clogged fuel filter If enough gunk accumulates in the fuel ...


2

It sounds like the fuel supply is being interrupted. This usually means that either the filter is blocked, one of the lines is blocked, or the breather is blocked, or as zhang says, air is getting into the system Try taking the fuel cap off while it is spluttering - if it suddenly clears up, it's the breather (put simply, if the breather is blocked, air ...


2

Getting the fuel pressure right is absolutely critical for how the engine operates. The reason why is it directly affects the amount of fuel the injectors can pass when open. You can affect fuel delivery in three ways: Change the injector (increase size) Change the pulse width (increase how long the injector stays open) Change the fuel pressure (flow ...


10

You should be fineĀ¹ The beauty of fuel-injection management systems is that they can compensate for slight deviations in operation via feedback. The amount of compensation is commonly referred to as "fuel trim" (because the fuel injector pulsewidth is controlled ("trimmed") by the fuel-injection management). It is not uncommon for vehicles to accommodate ...


3

I'm afraid I can't say what effect changing the pressure regulator on your specific vehicle will have but I do know that many Golf VR6 owners (3 bar pressure regulator) add a slightly modified Corrado unit (4 bar) which sharpens up the throttle response. I would assume that a small increase in pressure available to the injectors wouldn't cause a problem ...


0

Sounds to me like you have a hole in your gas tank. The fuel is pouring out and running along the frame of the vehicle. If the fuel pump is not on (ignition is off) no electricity should make it to the fuel pump. The pressure in the fuel lines would go away and the pump would stop any siphoning action. Sounds like the shop tried to fix your tank and ...


0

Valve is essential to filling and draining fuel from the tank. Replacing the fuel pump assembly where this valve is located is different on every type of car. Do some research about how to replace the fuel pump assembly on your friends car.


2

I have a 2013 Honda Civic EX Sedan. The ECON mode, from my research and personal experience with my car, does the following: changes the shift pattern of the transmission to maximize mpg by limiting downshifts unless you "floor it", reduces the A/C compressor operation and A/C fan to conserve mpg, changes the throttle response to maximize mpg and adjusts ...


3

EDIT: In general, could they replace it themselves? Would it be a difficult job? This depends a bit on what model the vehicle is. On some vehicles, the valve and the tube from the tank form a complete assembly that is easy to access. On others, the tank would need to be dropped to gain access to its top (where the valve tube is connected). If ...


4

Instead of rewriting this, I am stealing the following from this website: Your tank has to breathe. In order to breathe, your tank must have a vent somewhere that will relieve both vacuum and pressure. Gasoline expands in volume as it warms up and shrinks in volume as it cools down. The fuel level of your tank changes throughout the day, even if you are ...


0

If you are having an issue with anything a body shop has done, take it back to them. Almost every major body shop (ones that do warranty repair) in the US gives a lifetime warranty on their work (they'll continue doing this if they want to keep getting the warranty work). I don't know if you live in the States, but if you do, they need to take care of it. ...


0

Preignition occurs when a hot spot inside the combustion chamber ignites the fuel before the spark does. The exhaust gas recirculation system (EGR) dilutes the air/fuel mixture slightly to lower combustion temperatures when the engine is under load. This reduces the formation of oxides of nitrogen and also helps prevent detonation. So, I would check the ...


2

The best (read: easiest) method to check this is doing it on vehicle. In that case, you put a fuel pressure gauge on the engine at the Schraeder valve (if so equipped) and check the fuel pressure at idle and ensure you have the proper pressure. Then pull the vacuum line to and check the pressure again, which should have changed (it should go up between 5-7 ...


0

The Eco assist is not a placebo and it says nothing vague. It teaches you. "is a fuel efficiency INFORMATION system designed to HELP (teach) you DEVELOP (learn) and MAINTAIN ( continue to use what you learned ) a fuel-efficient driving style. The system MONITORS (gathers data) driving style, and can DISPLAY (shows you the data on the dashboard) the ...



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