fuel pump weakens when car warms up~~~ - LS1TECH

Go Back   LS1TECH > LS1-LS2-LS3-LS6-LS7 PERFORMANCE > Fueling & Injection
Log In 
Search


Fueling & Injection
Fuel Pumps | Injectors | Rails | Regulators | Tanks


fuel pump weakens when car warms up~~~

Reply
 
Thread Tools Search this Thread
Old 08-02-2010, 10:23 PM   #1
Teching In
 
hedge's Avatar
 
Trader Rating: 17
Join Date: Aug 2008
Location: paragould, arkansas
Posts: 49
Default fuel pump weakens when car warms up~~~

ok if i drive my car down the road it runs ***** to wall a minute or so like the fuel pump is warming up and getting weak... car will pop dwhen it sees max boost which is 7lbs or just whenever u put load on car...car will even begin to have hesitations when running it hard like it is runnin out of fuel but just barely.. car has maggie mp112 with 42lb injectors with racetronix 255 with hotwire. previous owner i spoke to said pump was 4 years old.... wierd thing car never popped during tuning, we tuned it for the injs and blower unit, and it was perfect!! and we ran it harder than ever. this issue begin few days after tune.. u think i just finished off the pump.. car also like a backfire very minimal but does at times when im slowing down like pulling into my drive, usually goin less than 10 mph.. i know i need more ful tuner said pump was fallin to 50 psi in park if u reved it up bunch. so he thinks it is already weak, though it holds 66 psi at idle but unde load we feel its failing, any ideas... i am lookin at gettin fuel pressure gauge on dash along with a/f gauge, but tring to get the cash. it will help i know........

pleas feel free to chime in ..

car has a4, cam heads 373 gears, mp 112 blower at 6-7 lbs, racetronix w/ harness. 42lb injcs
hedge is offline   Reply With Quote
Reply


Tags
car, cars, default, fuel, gear, motor, pressure, pump, put, warms, weak, weakens, weaker


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


 

All times are GMT -5. The time now is 05:16 AM.


Powered by vBulletin® Version 3.8.7 AC2
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - Terms of Service - JOBS
Emails & Contact Details