Bosch pump whining sound - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

owcarps13 · 05-03-2017, 04:53 PM

Hi to all,

I have a problem with Bosch 040 pump.
Setup:
Sr20det, ecu EMU, 370ccm, t28 ball bearing.

I replaced fuel pump (previous died) for Bosch 040. I put full tank and drive maybe 200miles and it start to whine like previous one. Right now I got 3/4 of fuel. After 10 minutes of driving whining becomes louder and car goes up to 3000rpm, after another 5 minutes 2000rpm is not possible so going from second to third gear is a dream. But when I let it rest for 5 min or so it starts to work propperly, but after 5 minutes whining and no power starts again.

Any ideas what is wrong? What to check?

*anti tyler* · 05-03-2017, 05:47 PM

Have you opened the tank cover to confirm the level matches the gauge? Sounds like the float may be off or something. I'm not familiar with this specific pump.

Can you confirm the sound is coming from the fuel pump and not something else like the differential?

Can you use your phone to take a clip of the sound/issue? That may help.

Sileighty_85 · 05-03-2017, 07:12 PM

Did you replace the fuel sock? If not what color was it?

owcarps13 · 05-04-2017, 01:56 AM

@ anti tyler

100% noise is from pump. Fuel level is ok because gasket under tank cover was torn and gas was on top of tank due to little leak.

@sileighty

Fuel sock is oryginal I think. At least I did not change it.

c-los13 · 05-04-2017, 06:14 AM

I had the same issue
My fuel tank was filled with rust clogging the fuel sock therefore making the fuel pump work extra hard to pick up fuel
I had my fuel tank cleaned and coated. it still gets kinda loud but at least it runs like its supposed to
Im running walbro btw
Good luck

owcarps13 · 05-04-2017, 01:40 PM

Quote:

Originally Posted by c-los13

I had the same issue
My fuel tank was filled with rust clogging the fuel sock therefore making the fuel pump work extra hard to pick up fuel
I had my fuel tank cleaned and coated. it still gets kinda loud but at least it runs like its supposed to
Im running walbro btw
Good luck

My 180 was build from scratch so tank was cleaned before it went on a car. However I will make some checks.

Little update. I have replaced fuel pump and fuel filter for new one. After 60 miles pump is whining again and no power. I have connected pump directly to battery same situation. When we put camera in to the tank pump is cover with petrol. We have removed fuel pressure regulator. Whining stoped but after 10 minutes of driving pump whines again and no power.

It seems that our ideas are out. Any tips guys?

05-03-2017, 04:53 PM	#1
owcarps13 Join Date: May 2017 Location: Poland Age: 44 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	Bosch pump whining sound Hi to all, I have a problem with Bosch 040 pump. Setup: Sr20det, ecu EMU, 370ccm, t28 ball bearing. I replaced fuel pump (previous died) for Bosch 040. I put full tank and drive maybe 200miles and it start to whine like previous one. Right now I got 3/4 of fuel. After 10 minutes of driving whining becomes louder and car goes up to 3000rpm, after another 5 minutes 2000rpm is not possible so going from second to third gear is a dream. But when I let it rest for 5 min or so it starts to work propperly, but after 5 minutes whining and no power starts again. Any ideas what is wrong? What to check?

05-03-2017, 07:12 PM	#3
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	Did you replace the fuel sock? If not what color was it? __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

05-04-2017, 01:56 AM	#4
owcarps13 Join Date: May 2017 Location: Poland Age: 44 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	@ anti tyler 100% noise is from pump. Fuel level is ok because gasket under tank cover was torn and gas was on top of tank due to little leak. @sileighty Fuel sock is oryginal I think. At least I did not change it.

05-04-2017, 06:14 AM	#5
c-los13 Zilvia Junkie Join Date: Feb 2010 Location: Edinburg, Texas Age: 36 Posts: 446 Trader Rating: (0) Feedback Score: 0 reviews	I had the same issue My fuel tank was filled with rust clogging the fuel sock therefore making the fuel pump work extra hard to pick up fuel I had my fuel tank cleaned and coated. it still gets kinda loud but at least it runs like its supposed to Im running walbro btw Good luck