V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

92 3.1L Fuel Pressure Reg Hose to Nowhere

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Old Mar 15, 2007 | 10:01 AM
  #1  
LarryD's Avatar
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Car: 92 RS
Engine: 3.1 V6
Transmission: T5
92 3.1L Fuel Pressure Reg Hose to Nowhere

So, you have that one last hose that doesn't seem to go anywhere after re-assembly and the digital pic just doesn't see where the end went.. The Fuel Pressure Regulator on the fuel rail has a hose fitting that goes to a T fitting.. One hose from the T goes to the air (vacuum?) plug on the top of the air plenum (that rubber plug with 3 positions).. The other hose from the T runs to the passenger side to the ??? My picture didn't capture that end and I can't find anywhere that it appears to connect.. Even the end of the hose doesn't look like it was connected anywhere ever.. Is this hose just supposed to be open to the air???
Attached Thumbnails 92 3.1L Fuel Pressure Reg Hose to Nowhere-regulator-line.jpg  
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Old Mar 15, 2007 | 10:52 AM
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
It goes to the AIR pump control mechanism.

RBob.
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Old Mar 15, 2007 | 10:57 AM
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Car: 92 RS
Engine: 3.1 V6
Transmission: T5
Do you have a pic of where that is located.. I can see what looks like a control on top of the air pump but haven't found any fitting to attach the hose...
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Old Mar 15, 2007 | 11:01 AM
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
I'll see about getting a pic to post. It will be later today before I can do that.

RBob.
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Old Mar 15, 2007 | 11:10 AM
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LarryD's Avatar
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Car: 92 RS
Engine: 3.1 V6
Transmission: T5
Great, thanks.. It won't be until later tonight before I can get back on it.. Have to go find one of those spring clips for the throttle linkage.. It did its little sproing thing across the ground last night.. Lost forever even with a high power magnet looking for it..
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Old Mar 15, 2007 | 08:16 PM
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Number 3 in the picture is the vacuum port. Interestingly enough it is used to force divert on decel. I would imagine this prevents backfires in the exhaust.

RBob.
Attached Thumbnails 92 3.1L Fuel Pressure Reg Hose to Nowhere-airvalve.jpg  
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Old Mar 15, 2007 | 11:10 PM
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Car: 92 RS
Engine: 3.1 V6
Transmission: T5
Man, thanks for the help.. I would never have found that as it ends up being at the bottom of the engine... Only had about an inch to slide my fingers in but got it on there.. Should have gone on before installing the pump... Pic tells a 1,000 words.. Thanks again...
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