Just want know if I need to de-pressurized my fuel system before replacing my fuel filter? What are the consequences if it's not de-pressurized?

 

just open the gas cap

 

THere is a service access bolt on the driver side of fuel rail. hold the bigger section w/ a wrench and loosen the smaller bolt. Hold a towel around it to catch the fuel. THen retighten bolt. If you don't do this, you will relieve the pressure anyways, just messier.

 

Yeah if you depressurize properly you'll get zero spillage when you undo the filter (since the 4G filter input and output are both on the top of the filter). It helps greatly to have an open end wrench big enough to fit around the "nut" of the oil filter. I don't remember if this is 18, 19, or 20mm.

 

When you undo your first fitting just have a rag around the wrench and bolt to catch the fuel. Don't squirt it in your eye...