[daemon]

Tested today the fuel pump cause P0411 came out of vagcom. So as engine was running I had 2.4bar of pressure in circuit but when the engine is stopped pressure dropped at 0 instantly. . . is that normal or I should see it going down slowly ?

 

[Smileybug]

That code isn't for the fuel pump, its for the secondary air pump/system: 16795/P0411/001041 - Ross-Tech Wiki

 

[billymade]

Your fuel pump is bad; it should maintain fuel pressure for at least 10 minutes, after turning the engine off. After 10 minutes there must be a residual pressure of at least 2.0 bar (converted 29 psi). (quote from the service manual) This was exactly; how my fuel pump acted, when it was going bad. Replace the fuel pump and make sure to replace the gasket around the locking ring.

More info here:

http://newbeetle.org/forums/2-0-liter-gas/66233-fuel-pressure-whats-good.html

 

[daemon]

Thanks for the replay guys . . . I thought too that pressure should stay for a time after killing the engine. . . I jumped to this result and test the pump cause at high rpm it felt like the cylinders dried of fuel . . . I think that I should go for a bigger pump, injectors and pressure regulator . . . next step should be the turbo . . .

 

[jfoj]

If you decide to stay with the stock pump, check out BMA Auto Parts | Bumper to Bumper since 1978 | Oem auto parts, vw parts, sachs boge, mercedes benz parts, honda auto parts, saab parts and use SPECE30 for a 5% discount.

They offer Siemens/VDO pump/sending unit combinations for a pretty good price from what I recall.

 

[daemon]

I'm planing on walbro 255 cause in short my turbo is going out . . . do you suggest something else for BT project ? ? ?

 

[daemon]

any suggestions for fuel pump for future BT ?