Weird gasoline smell

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92Q45T
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Joined: Fri Apr 03, 2009 2:48 pm
Car: 1992 q45T
Location: New Jersey
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I have a 92Q45t, when I warm up the vehicle in the mornings, I get a smell like gasoline.
I checked for leaks, not the fuel filter, any ideals ???


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elwesso
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Car: 94 Infiniti Q45t 5 spd
2007 BMW M Coupe
2007 Infiniti G35 S 6MT
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Most likely looking at some fuel lines leaking under the plenum, pretty common especially in the winter time..

96Qowner
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Car: 1996 Q45

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In fact, there's one particular hose that's probably the culprit. It's only about 3 inches long, located sort of vertically under the plenum at the back of the middle of the block. You can barely get a view of it with a flashlight. Trace the hard line back from the filter, I think, and you should see it drip when the line is pressurized. Tightening might work if you can get a tool in there. Otherwise, you'll have to lift the plenum to get at it - iffy if your hoses are brittle - they'll probably crack. If you've R&R'ed the hoses, it's not so much a problem - you'll just need the new plenum gaskets.

Mine's leaking again this winter.

92Q45T
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Joined: Fri Apr 03, 2009 2:48 pm
Car: 1992 q45T
Location: New Jersey
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What is the plenum you are referring to ?

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goody90q45
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Car: 1992 Infiniti Q45 (sold)
Location: Orangevale, CA

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It's the intake manifold (silver spider with 8 legs) mounted over the fuel rail and injectors.

Using a flashlight and maybe a small inspection mirror, follow both sides of the fuel rail towards the firewall (but still under the plenum) and where they cross over and come together is probably where your leak is. It's been in the same place on 2 of my 3 Q's. With the right combination of tools you should be able to get to the hose clamps and tighten them down.

92Q45T
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Joined: Fri Apr 03, 2009 2:48 pm
Car: 1992 q45T
Location: New Jersey
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Thx .............I had to replace the Y hose underneath last summer.............I'll check it out !!

maxnix
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Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45

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Three fuel lines under there. They get brittle and shrink when cold. Best to get the OEM ones form Joe for a good fit. 1 foot length will cover all 3 if you are careful when cutting.


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