LM97Z

iTrader: (4)

After 158K miles, i decided to change the fuel pump for assurance while changing the rearend, i installed a Walbro 255, everything seems good (starts better too), but i've noticed that it has a slight lazy spot now that wasn't there before, it does feel like its stronger WOT in the upper RPMs, this lazy spot is not bad, but its there, Is it AT ALL possible that the new pump is jacking with this old regulator & makeing the pressure act funny, i know i need to go buy a Tester, but is it possible? Should i change the regulator too?

Thanks

96lt1m6

iTrader: (31)

i am sure the diaphram in the original reg. is worn for the price it is worth it to purchase a new one from chevy.....

LM97Z

iTrader: (4)

How hard is it to change one out, i heard you need to remove the fuel rail, is this true?

connexion2005

iTrader: (49)

It's at the back of the intake and I believe the rails need to come off...