Grrrrrrrrrrr.. I asked *specifically* if I need to remove the dead stocker,
and all you guys said no, leave it, not a problem.  The info given was "No,
we never rip the stock pump out, the pump is how the sock is mounted so
without the stock pump, you won't have the input in the right spot".  Which
is right, so I installed it, presto, no problems till now.

So, when FM installs a Pierburg, you take the stock pump out?

Wallyman




                                                                           
             "Bill Cardell"                                                
             <[EMAIL PROTECTED]>                                         
                                                                        To 
             04/03/2008 12:52 PM             "Larry Alster"                
                                             <[EMAIL PROTECTED]>,            
                                             <[EMAIL PROTECTED]>,    
                                             "Nathan Sumner"               
                                             <[EMAIL PROTECTED]>    
                                                                        cc 
                                             <[email protected]>   
                                                                   Subject 
                                             RE: ARG - Fuel Pump dying     
                                             again. :(                     
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Larry brings up an important point. If the stock pump is in place and not
working, it's a big restriction on the inlet of the Pierburg,  and the
inlet side is not the place to restrict.



Bill Cardell
TurboDog's Dad
www.flyinmiata.com
1-800-FLY-MX5S (sales)
970-242-3800 (tech)
2008 FM Open House: August 14-17




From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Larry Alster
Sent: Thursday, April 03, 2008 9:58 AM
To: [EMAIL PROTECTED]; 'Nathan Sumner'
Cc: [email protected]
Subject: RE: ARG - Fuel Pump dying again. :(

I’m not sure you can leave the stock pump in there not running and expect
the Pierburg to pull through it.



Larry

White Knight      1991 Crystal White   #99 CSP
Silver Bullet        1992 Silverstone     #17 SM2  FM I+ Turbo
Honey B             1992 Sunburst Yellow #99 SM2L  JR Supercharger
Whooosh           2004 Titanium Mazdaspeed MX-5

LowCountry Miata  http://www.lowcountrymiataclub.net
Masters Miata
RAGS 074

From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Thursday, April 03, 2008 8:34 AM
To: Nathan Sumner
Cc: [email protected]
Subject: RE: ARG - Fuel Pump dying again. :(



I would agree... but I'm clueless why it happens.

First pump was stock, started to die 30 minutes out of Grand Junction
(wouldn't hold pressure at steady cruise, actually bellied up 3 days
later). Wired with 10 or 12 ga from battery to pump by Ken Hill.

Second pump, also stock, lasted a year. Rewired with 10ga on a relay at the
battery, battery to relay to pump, shortest route possible.

Third pump, used Pierburg from FM, lasted maybe year and a half. 10ga to
relay, 10 ga to ground. Stock pump still in the tank, unhooked
electrically.

Good link, thank you. Totally agree, would rather support a real vendor
than a nameless eBay guy. Which pump do you have, the 255 or the 255 HP? I
have read the HP is louder.

Wallyman


Inactive hide details for " height="16" id="_x0000_i1025">"Nathan Sumner"
<[EMAIL PROTECTED]>



                                                                           
                         "Nathan Sumner"                                   
                         <nathan.sumner@                                   
                         gatech.edu>                                       
                                                                           
                                                                        To 
                         04/02/2008                                        
                         08:48 PM                  <[EMAIL PROTECTED] 
                                                   m>,                     
                                                   <[EMAIL PROTECTED] 
                                                   net>                    
                                                                           
                                                                        cc 
                                                                           
                                                                           
                                                                   Subject 
                                                                           
                                                   RE: ARG - Fuel Pump     
                                                   dying again. :(         
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           





I don’t think fuel pumps should go bad that often… Maybe your over doing it
and getting too big of a pump and its getting overheated due to the large
amount of recirculation require when you aren’t at WOT. Just a though and I
haven’t been following your fuel pump stories. Maybe a RPM/throttle based
voltage limiter would help with this issue.

I normally don’t buy from ebay when I can buy it at the same price from a
“real” store. That’s just a habit of mine. I know lots of people (including
me) that bought walbro 255 from here:
http://www.autoperformanceengineering.com/html/fpapps.html If the ebay ad
picture is of the actual item, its not the “correct” pump as it appears to
require you to splice into the miata wiring. The correct one has the miata
style connector.

Also, I cannot hear my walbro anytime beside when I first turn on the key
and even then it isn’t loud.

Nathan Sumner
[EMAIL PROTECTED]

From: [EMAIL PROTECTED] [
mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Wednesday, April 02, 2008 8:38 PM
To: [email protected]
Subject: ARG - Fuel Pump dying again. :(

Yup.. pump #3 for the Sub.. this time a used external Pierburg is dying on
me... ARG. While my gap was wrong (0.045) which was causing some of my
misfire troubles, the real cuplrit is the fuel pump dying off.. it'll go to
60psi at WOT (15psi boost) but then quickly falls on it's face, dropping
like a rock and the car starts stumbling, O2 reading leaner than 13.0:1.

Since fuel pumps apparently are consumables on my car, any reason I should
avoid the $99 Walbro 255lph ones on eBay? I'm not swallowing another $242
for a new Pierburg since the life expectancy of a pump seems to be a year
or two.. but at $100 I can almost tolerate the frequency... Thoughts,
anyone?? The Pierburg wasn't silent, and you could hear it at idle.. if the
Walbro is the same noise level, I think I could tolerate it.

http://cgi.ebay.com/ebaymotors/WALBRO-255-LPH-FUEL-PUMP-Mazda-MX5-Miata-MX-5-255lph_W0QQcmdZViewItemQQcategoryZ33555QQihZ002QQitemZ120238884274QQrdZ1QQsspagenameZWDVW


Wallyman


                                                                            
                                                                            
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