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Discussion Starter · #1 ·
Can anyone recommend a good, independent Miata repair shop in/around Berkeley, CA? A friend needs to have the fuel pump replaced in his 2005 NB for the 2nd time. Should I recommend he install the Walbro 190lph?
 

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Discussion Starter · #2 ·
http://www.lightningmotorsports.com/walbro.htm
Leading causes of Walbro Fuel Pump Death
  1. Debris, normally in the form of fine silt that can make its way past the 30 micron filter sock. When no filter-sock is used or if it is not installed properly, it is not unheard of to find pieces of sand, string, metal shavings, and rubber bits. This is what kills 99% of all Walbro Fuel pumps.
  2. Water present in tank (corrosion of the pump gears)
  3. Dropping of the pump, can break off the nipple at the very least. Dropping the fuel pump can also knock off the cam ring causing the fuel pump to bind and either decrease flow or completely bind up the fuel pump. Dropping the pump can also break the internal magnets and weaken or destroy the magnetic field cause decreased output or no output.
  4. Operating the fuel pump without fuel; this melts some of the internal gears.
  5. Using the fuel pump in a returnless (pulse width modulated) fuel system. (Late model Mustang, RSX, etc...)
So what's a NB owner supposed to do?
 
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