how to add more fuel ??? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

9524tee · 12-14-2002, 04:47 AM

hey guys i need some help here i have done some mods and my car is running too lean ive done all i can do with replacement parts and such , but i need to upgrade the fuel system to get some more fuel ... im getting a lean misfire once in awhile , so whats the cheapest way to get some more fuel into my motor ?

9524tee · 12-15-2002, 02:16 AM

c,mon someone has to know something

logo20 · 12-15-2002, 02:46 PM

I'm don't know much about the fuel system.  My car is running lean too.  I'm gonna get a NGK O2 sensor and put new NGK spark plugs.  hopefully this will help.  Injector cleaners would help, but If you have Intake and exaust mods the best thing is to get an ECU upgrade.

240racer · 12-15-2002, 03:11 PM

I don't think you can go past the capacity of the fuel system with basic NA mods.  The MAF tells the computer how much fuel to put in, if you aren't getting enough, then something is wrong.  You need to figure out what is wrong.  I suggested the AFC before, but that was a bandaid solution that didn't solve the problem, just fixed the lean part.  You are not past the capacity of the MAF, I still have am using the stock one.  You are also not past the capacity of the stock fuel injectors, assuming they are clean and in good condition.  Otherwise, check the fuel pump, timing, and all the basic tune up stuff.

12-14-2002, 04:47 AM	#1
9524tee Zilvia Junkie Join Date: Nov 2001 Location: Lexington KY Posts: 545 Trader Rating: (0) Feedback Score: 0 reviews	hey guys i need some help here i have done some mods and my car is running too lean ive done all i can do with replacement parts and such , but i need to upgrade the fuel system to get some more fuel ... im getting a lean misfire once in awhile , so whats the cheapest way to get some more fuel into my motor ? __________________ Nancy Kappa Monkey Squad

12-15-2002, 02:16 AM	#2
9524tee Zilvia Junkie Join Date: Nov 2001 Location: Lexington KY Posts: 545 Trader Rating: (0) Feedback Score: 0 reviews	c,mon someone has to know something __________________ Nancy Kappa Monkey Squad

12-15-2002, 02:46 PM	#3
logo20 Zilvia Junkie Join Date: Apr 2002 Location: Houston, TX Posts: 345 Trader Rating: (0) Feedback Score: 0 reviews	I'm don't know much about the fuel system.  My car is running lean too.  I'm gonna get a NGK O2 sensor and put new NGK spark plugs.  hopefully this will help.  Injector cleaners would help, but If you have Intake and exaust mods the best thing is to get an ECU upgrade. __________________ http://community.webshots.com/user/logo20

12-15-2002, 03:11 PM	#4
240racer Zilvia Junkie Join Date: Nov 2001 Location: Minneapolis, MN Age: 46 Posts: 574 Trader Rating: (0) Feedback Score: 0 reviews	I don't think you can go past the capacity of the fuel system with basic NA mods.  The MAF tells the computer how much fuel to put in, if you aren't getting enough, then something is wrong.  You need to figure out what is wrong.  I suggested the AFC before, but that was a bandaid solution that didn't solve the problem, just fixed the lean part.  You are not past the capacity of the MAF, I still have am using the stock one.  You are also not past the capacity of the stock fuel injectors, assuming they are clean and in good condition.  Otherwise, check the fuel pump, timing, and all the basic tune up stuff. __________________ Adam '89 coupe KA24DE+T 14.1 @ 104 MPH '88 Celica All-Trac turbo stock, but no more ecu codes!!