Hello, I am posting because my fuel gauge is highly inaccurate. I mean, when I top off my car w/ gas, the gauge will only say 3/4 full. And when I step on the gas pedal, the gauge will drop significantly; however, I can ride below the empty line for a while, well over 50miles as I tested last night on the way to work. Also, my low fuel light never comes on... How might I fix this problem. Any help appreciated. Thanks very much.

 

check the float arm in the gas tank to see if it is bent damaged or full of crud

 

Float arm in the gas tank? Can I get to it from inside the car, like the fuel pump?

 

its on the fuel pump assembly

 

Kewl, will do, thank you

 

there is a fuel light ???? on what rx7? i never really notices

 

on all FC and FDs

 

yup ....where the stock clock is..

 

Yea, in the idiot gauges to the bottom left corner on my car

 

Does every rx7 I own or have owned have a problem w/ the gas gauge? Thanks Icemark as this tip has helped me even years later... lol.

 

so hey uh im having the same problem. i access the fuel pump by removing the carpet from the back of the car right? do i need to replace the float or clean it out? if i have to replace the float, where can i get a new one? did u ever fix the low fuel level light? how do u fix it?

 

The FSM (http://www.teamfc3s.org/main/factory_service_manual/) details how to relieve the fuel pressure and remove the pump. Mazdatrix sells new fuel level senders and floats. About $89 for S4s and $115 for S5s.

http://www.mazdatrix.com/c-pump.htm

At the bottom of the page.