Strange Fuel Pump Issue, Help please - FIXED! Options

[flat4tom]

Hello all,

Got my 914 back together today. Here's a list of what I've done since I brought it home...

Fixed front trunk release so it will open.
Pulled gas tank. Tank is clean, no rust, fuel sock there in good shape.
Replaced all fuel lines under tank.
Pulled injectors and sent them for servicing.
Replaced all vacuum hoses.
Tightened all intake runners down - they were loose.
Removed and cleaned the throttle body
Checked the TPS and adjusted
Replaced the throttle body, installed a new TB gasket.
Removed and fixed inoperative AAR.
Replaced the spark plugs with new NGK's
Reinstalled cleaned and serviced fuel injectors.
All new fuel hoses in the engine compartment.

She runs like a top now! No vacuum leaks. No missing. Idles smooth. Took her out for a spin and to get some gas. Has a strange issue now with the fuel pump.

The fuel pump has been relocated to the front under the gas tank - recommended relocation spot. I can now hear the pump running while the engine is running. Seemed like it was quieter before... anyway...

While driving down the road straight - all is good. If I make a turn to the left the fuel pump seems to cut out (the sound changes) and the engine starves for fuel.
Right turns, no problem. (IMG:style_emoticons/default/WTF.gif) If it's idling in the driveway and I turn the wheels, no problem - fuel pressure remains constant. I wish I could check my fuel pressure gauge while driving but it's mounted to a fuel rail.

Any thought why the pump would cut out on left turns?? Any suggestions on where to look for this?

I am so close to being able to drive her!!... (IMG:style_emoticons/default/driving.gif)

T.I.A.
Tom
'73 2.0

[Katmanken]

Noisy pump can mean there is a flow problem or a failing pump. Pinch the output hose on any pump or have a blocked filter, and the noise should go up. On the other hand, the pump relocation or new mounting system might make it seem noisier.

Definitely agree with the pinched line problem. Just fixed my son's Jetta yesterday by fixing a pinched section of plastic line. When he drove or cornered, the weight of the rubber line would fold a section in the high pressure plastic line and the engine would misfire. He was so happy when he called on his way home to tell me the misfire problem was gone

Per the noise, did you change the rubber mounts? A harder rubber will transmit more noise. One of the things I've been looking at is some VW cars mount the fuel pump in a foam container or box. The foam container holds the pump in place, the foam acts as a vibration damper, and absorbs noise.