i recently have nothing to do and went to watch my friend doing cars( friend is a mechanic) and found out something that some of the sifus here already know but i think sharing it out will make those who dont know, to learn and aware of how important is maintaining the car's fuel system (petrol engine)
lets see something first
picture 1-5 is i taken when my fren took out the fuel pump assembly from a gtr34 v-spec II ... that car recently suffer lost of power and lean running condition.. first we though of the external twin bosh 044 fuel pump spoilt but after my fren took out the filter and look inside, then he direct took the in tank fuel pump out.. ta da:wavey: .... a fuel tank full of rust.. so we suspect the whole fuel system (pump, fuel filters, injectors, etc...) is contaminated by dust of rust so need a full clean up right there which bring headache since the fuel tank might need replace since it rust also...
picture 6-7 is the "dissected view" of my currently changed old fuel filter ... i not sure how long since the last owner last change but it seems like the filter paper caught a lot of dirt...
ok, enough for long story, lets come to the point
why can all these occur? and why it is important to make sure our fuel system is clean beside to protect it from rust?
from the skyline owner and also the knowledge of mechanics, the fuel system or tank rust because
what effects of rust, dirty fuel filters?
To prevent or solve these
ok, sorry for long writing,i hope these boring thing i share during my boring time bring some knowledge to those who needed....other sifu pls correct me if i am wrong since i am a newbie:wavey:
lets see something first
picture 1-5 is i taken when my fren took out the fuel pump assembly from a gtr34 v-spec II ... that car recently suffer lost of power and lean running condition.. first we though of the external twin bosh 044 fuel pump spoilt but after my fren took out the filter and look inside, then he direct took the in tank fuel pump out.. ta da:wavey: .... a fuel tank full of rust.. so we suspect the whole fuel system (pump, fuel filters, injectors, etc...) is contaminated by dust of rust so need a full clean up right there which bring headache since the fuel tank might need replace since it rust also...
picture 6-7 is the "dissected view" of my currently changed old fuel filter ... i not sure how long since the last owner last change but it seems like the filter paper caught a lot of dirt...
ok, enough for long story, lets come to the point
why can all these occur? and why it is important to make sure our fuel system is clean beside to protect it from rust?
from the skyline owner and also the knowledge of mechanics, the fuel system or tank rust because
- the car engine is kept "static" (no running no start) condition for a long period of time
- when filling up fuel, not fill up till full tank or close to full tank
what effects of rust, dirty fuel filters?
- rust is like the cancer of metals, once it spread, no cure, look at the skyline fuel pump assembly, rust spread into the whole system until the filter clogged with rust's dust, fuel tank rust till need replace to ensure fuel system clean
- and, the dust will clog the fuel filters as well as injectors which lead to lean engine which may damage the engine
- even the fuel system has no rust, there are still tiny dirt catched by filtered and some might also clog your injectors, however , this scenario is nothing better then rust since the tiny dirt after clogged for a period of time will also cause injectors and fuel filters clog and make the engine lost power at the beginning and if it fully clogged it still can lean out the engine
To prevent or solve these
- try not to leave the cars fuel tank empty or near empty and not driving for a long period of time since water vapour trap inside fuel tank and cause rust... furthermore , low fuel level cause the fuel pump work harder and get hot easily especially the pump sucks in air while the level is low and car keep moving, it damage fuel pumps too, even some say racing pump the walbro spoilt faster in this condition
- when pump petrol, try make it full or near full since it can get rid water vapour inside fuel tank, the more space on the fuel tank, more water vapour accumulate on the upper level of petrol and cause rust
- if the above 2 point really cant be done, there are product in the market for example Redline fuel system water removal& anti freeze which can eliminate water vapour in fuel tank Red Line Synthetic Oil - Gasoline Fuel Additives - Fuel System Water Remover & Antifreeze however i believe using the $$ to buy that product to fill the fuel tank up is much better
- do regular maintenance on the fuel system, as simple as servicing injectors per 40 or 50k kilometers and change fuel filter everytime service the injectors(this is my own preference, factory manual might vary), this ensure clean petrol to your engine and can clean fuel system brings back respond and power of engine, like my case, it is very obvious the power is smoother and more power then before service and change fuel filter.
ok, sorry for long writing,i hope these boring thing i share during my boring time bring some knowledge to those who needed....other sifu pls correct me if i am wrong since i am a newbie:wavey: