how to diagnose a fuel pump going bad? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

devonkyle77 · 05-21-2006, 04:31 PM

i THINK my fuel pump may be going bad, any clue on what symptoms i would be facing?

wiggerman · 05-21-2006, 05:25 PM

could be running lean ect what makes you think its going out? one way to check is to see how much pressure you have at the rail

devonkyle77 · 05-21-2006, 06:04 PM

sputtering, and more often with less gas than a full tank

PITCH · 10-04-2006, 06:31 AM

ever figure this out? Pulled my sparks yesterday for a compression test and they had white tips. Running Lean I guess. I doubt the fuel filter's ever been changed (I havent since ive owned the car). Just wanted to know if you came to any soloution because i'm having the same issue.

g6civcx · 10-04-2006, 06:41 AM

Check fuel pressure.

punxva · 10-04-2006, 08:07 AM

like g6 said check the fuel pressure, then make sure that your fpr is also working

BC240 · 10-04-2006, 01:33 PM

When my pump was going bad it felt like someone attached an anchor to my bumper, slow throughout the rpm range. Id change the fuel filter regardless, if thats clogged you wont get proper fuel.

devonkyle77 · 10-04-2006, 04:12 PM

replaced fuel filter and fuel pump 2 months ago.still feels sluggish

GR8WHITE · 10-04-2006, 06:25 PM

I Kinda Had The Same Problem, When I Went To Put My Walbro Pump In I Pulled Out The Old Pump And The Strainer Attached To The Pump Was Clogged And Had A Bunch Of Crap In It, So Once It Got Above Like 3,000 Rpm Under Full Throttle It Would Buck Like It Was Pissed. Put The Walbro In With Brand New Strainer And The Problem Was Gone.

05-21-2006, 04:31 PM	#1
devonkyle77 Post Whore! Join Date: Sep 2003 Location: md Age: 41 Posts: 3,091 Trader Rating: (3) Rides Gallery: devonkyle77 Feedback Score: 3 reviews	how to diagnose a fuel pump going bad? i THINK my fuel pump may be going bad, any clue on what symptoms i would be facing? __________________ WTB-NARDI wheel & NRG 2.8 QR

05-21-2006, 06:04 PM	#3
devonkyle77 Post Whore! Join Date: Sep 2003 Location: md Age: 41 Posts: 3,091 Trader Rating: (3) Rides Gallery: devonkyle77 Feedback Score: 3 reviews	sputtering, and more often with less gas than a full tank __________________ WTB-NARDI wheel & NRG 2.8 QR

10-04-2006, 04:12 PM	#8
devonkyle77 Post Whore! Join Date: Sep 2003 Location: md Age: 41 Posts: 3,091 Trader Rating: (3) Rides Gallery: devonkyle77 Feedback Score: 3 reviews	replaced fuel filter and fuel pump 2 months ago.still feels sluggish __________________ WTB-NARDI wheel & NRG 2.8 QR

05-21-2006, 05:25 PM	#2
wiggerman Join Date: Mar 2006 Location: phoenix Posts: 14 Trader Rating: (0) Feedback Score: 0 reviews	could be running lean ect what makes you think its going out? one way to check is to see how much pressure you have at the rail

10-04-2006, 06:31 AM	#4
PITCH Zilvia FREAK! Join Date: Jan 2006 Location: GA Age: 43 Posts: 1,103 Trader Rating: (5) Feedback Score: 5 reviews	ever figure this out? Pulled my sparks yesterday for a compression test and they had white tips. Running Lean I guess. I doubt the fuel filter's ever been changed (I havent since ive owned the car). Just wanted to know if you came to any soloution because i'm having the same issue.

10-04-2006, 06:41 AM	#5
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	Check fuel pressure.

10-04-2006, 01:33 PM	#7
BC240 Zilvia Junkie Join Date: Aug 2006 Location: Richmond, BC Age: 43 Posts: 472 Trader Rating: (1) Feedback Score: 1 reviews	When my pump was going bad it felt like someone attached an anchor to my bumper, slow throughout the rpm range. Id change the fuel filter regardless, if thats clogged you wont get proper fuel.

10-04-2006, 06:25 PM	#9
GR8WHITE Leaky Injector Join Date: May 2006 Location: CA Posts: 63 Trader Rating: (0) Feedback Score: 0 reviews	I Kinda Had The Same Problem, When I Went To Put My Walbro Pump In I Pulled Out The Old Pump And The Strainer Attached To The Pump Was Clogged And Had A Bunch Of Crap In It, So Once It Got Above Like 3,000 Rpm Under Full Throttle It Would Buck Like It Was Pissed. Put The Walbro In With Brand New Strainer And The Problem Was Gone.