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#1 |
Registered User
Join Date: Aug 2005
Location: Mechanicsburg, PA
Posts: 86
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Fuel Lines again
I have noticed that when I fill my tank up I smell gas fumes until I burn it down to just under 3/4 indicated. LonghornMan said that there is some rubber under the cab also (I have already replace the bubber from the frame to the pump and it's steel up to the carb). I haven't done any investigating yet its too cold but I'm wonder why I only get the fumes when the tank is full. Is there possibly a tank drain thats leaking only when there is more pressure due to a full tank?
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67 GMC 4x4, 305 V-6, 4-spd 86 S-10, 2.8 2WD LWB 01 Suburban (family hauler) 13 Honda CRV (wife's wheels) 03 Malibu (daughter’s car) |
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#2 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Fuel Lines again
71/72 have rubber lines up there. If I said the 70 and older had rubber, i was mistaken or havin a brain fart.
THe common reasons for fuel smalle only when filled up... 1 Fuel cap leaking, and a hole in the cab corner. 2 O ring around fuel sending unit leaking. Look for clean streaks int he dust on the tank. 3 Cracks where the filler neck joins the tank, normally on the bottim if the filler neck. This is commonly caused by leaning on the pump nozzle at the gas station. There is no rubber hose to take up any flex like on later model vehicles. |
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#3 |
Registered User
Join Date: Jan 2000
Location: Wyoming USA
Posts: 2,445
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Does the sender have a good seal on the tank??
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2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327 |
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#4 |
Senior Member
![]() Join Date: Feb 2004
Location: Williamsburg, Ohio
Posts: 1,783
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Re: Fuel Lines again
also if you have an aftermarket sender the soldered fitting may be suspect. From my experience thru the years with the fill next to the door--you will always get a wiff from the fill upon entering an exit.
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#5 |
Registered User
Join Date: Aug 2005
Location: Mechanicsburg, PA
Posts: 86
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Re: Fuel Lines again
OK thanks for the leads, I'll let you know the outcome . . . come spring. HNY
__________________
67 GMC 4x4, 305 V-6, 4-spd 86 S-10, 2.8 2WD LWB 01 Suburban (family hauler) 13 Honda CRV (wife's wheels) 03 Malibu (daughter’s car) |
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