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Running fine but smell fuel after driving.

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Old Nov 23, 2009 | 07:00 PM
  #1  
shingadaddy's Avatar
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From: Oklahoma
Car: 91 Z.
Engine: 5.7 TPI
Running fine but smell fuel after driving.

That pretty much sums it up. No starting, Idling or running issues. I have the FUEL INJECTOR CONNECTION Bosch Gen III injectors from John. Fuel pump replaced 2 years ago.. I cant find any liquid fuel anywhere up front and cant tell if its coming from front or back.??? Just seems all around the car when you get out.

I haven't noticed any pressure in the tank when removing the cap lately but its cold now. Charcoal canister not smelling of gas.

The tank should hold pressure blowing into it by mouth shouldn't it?
Going to try this now but any other suggestions appreciated.
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Old Nov 23, 2009 | 10:04 PM
  #2  
jv9999's Avatar
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From: MA
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt
Re: Running fine but smell fuel after driving.

I don't suppose you cut your fuel lines and spliced them with hose when you changed the pump?
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Old Nov 24, 2009 | 07:46 AM
  #3  
shingadaddy's Avatar
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From: Oklahoma
Car: 91 Z.
Engine: 5.7 TPI
Re: Running fine but smell fuel after driving.

Tools and time. Dropped the rear and did it by the book. Not my only driver luckily.

And I mis-spoke. There IS a good deal of fumes coming from the charcoal canister. You just have to run it for a while to get it to do it.

There is an open port at the top of it with a small white tip on it .
I dont see a line that would go to it. Looks like it should have one. Is there supposed to be one on it?
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Old Nov 24, 2009 | 09:23 AM
  #4  
jv9999's Avatar
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From: MA
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt
Re: Running fine but smell fuel after driving.

Originally Posted by shingadaddy
Tools and time. Dropped the rear and did it by the book. Not my only driver luckily.

And I mis-spoke. There IS a good deal of fumes coming from the charcoal canister. You just have to run it for a while to get it to do it.

There is an open port at the top of it with a small white tip on it .
I dont see a line that would go to it. Looks like it should have one. Is there supposed to be one on it?
Smart man. There should be a vacuum line going to the purge solenoid. The canister stores the fumes in the charcoal until the purge solenoid opens and sucks them into the the intake.
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Old Nov 24, 2009 | 09:42 AM
  #5  
shingadaddy's Avatar
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From: Oklahoma
Car: 91 Z.
Engine: 5.7 TPI
Re: Running fine but smell fuel after driving.

The canister has a Larger line going to it but on the top of the diaphram there is this other port looking hookup that I described. I'm guessing it should have a SMALLER vac line on it?

Now where the heck does the other end come from??
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Old Nov 24, 2009 | 11:08 AM
  #6  
ploegi's Avatar
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From: Adrian, Mi, USA
Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
Re: Running fine but smell fuel after driving.

Is the vacuum hose routing diagram still under the hood somewhere?
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Old Nov 24, 2009 | 11:44 AM
  #7  
shingadaddy's Avatar
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From: Oklahoma
Car: 91 Z.
Engine: 5.7 TPI
Re: Running fine but smell fuel after driving.

Should be. I'll look after work. I have the shop service manual too. Can't figure where the line might be. I looked around a bit for one but I was hurried, like usual..
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