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Old 06-18-2003, 09:39 AM   #1
BigBlack68
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my truck smells

Ever time I make a turn left or right i get this very strong gas smell,is there anything i can do about this? I'm starting to get sick off this stuff ,thanks for the help
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Old 06-18-2003, 09:53 AM   #2
JIMs70GMC
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It's probably a hole in the gas tank filler neck around/near the gasket. And when you turn your causing the gas to slush around and create fumes which are entering the cab. I patched mine no more gas smell. It maybe stronger when the windows are up or down I don't remember.
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs
1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX
1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears
1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now.....
1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone.
1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed.

1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm
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Old 06-18-2003, 10:10 AM   #3
CPNE
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That's odd. Mine smells after making a right turn out of a Taco Bell!

On a serious note, the above suggestion seems to be the place to start.
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Currently on or near the homestead:

67 Chevy SWB 2WD stepside 350/3 on tree (Pat's)
67 GMC SWB 2WD Fleet 402/auto (Brian's under construction)
67 Chevy 3/4 ton 2WD 402/auto (Business Hauler)
67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC)
68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC)
70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC)
71 Chevy SWB stepside (Crushed by tree - parts donor)
72 Chevy 3/4 ton 4WD (Parts donor)
72 Chevy 3/4 ton 4WD Suburban (Parts Donor)
72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC)
81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler)
82 Camaro Z/28 355/Super T-10 (Pat's toy)
93 Caprice 9C1 (Brian's Cop Car)
02 Toyota Camry (Reliable but a souless steel and plastic hulk)
2011 2SS RS Camaro M6 Factory Hurst Shifter

Maybe I need to sell some of this crap

Yet another Bozo with a sawz-all
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Old 06-18-2003, 10:33 AM   #4
old Rusty C10
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check the vent line too
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Old 06-18-2003, 10:38 AM   #5
special70gmc
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lol cpne but i dont think there are many toco bells around you for at least 50 mi. the landscape is really nice by you though -kyle
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Old 06-18-2003, 02:23 PM   #6
1972ChevyGuy
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Yea, pull your seat up and check the lines on top real good, happened to mine also. The vent hose dry-rotted and was leaking barely.
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Old 06-18-2003, 03:48 PM   #7
BigBlack68
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Alright guys thanks for the help,i'll go try fixing it after it stops raining
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Old 06-18-2003, 05:07 PM   #8
70c10
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Check the o ring on the top of the tank inside the cab.
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Old 06-18-2003, 07:15 PM   #9
JIMs70GMC
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Since yours is a 68 you shouldn't have a vent to the gas tank only a filler neck. Might be a good time to move the tank to under the bed.
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs
1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX
1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears
1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now.....
1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone.
1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed.

1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm
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Old 06-18-2003, 07:20 PM   #10
COBALT
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Funny. Mine smells about 5-6 hours after leaving the Taco Bell.....



Take the cardboard liner off the gas tank, and turn a courner on a cool day. Then get out and check the tops of the tank. I bet both sides will be wet.
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Old 06-19-2003, 04:33 AM   #11
Southpa
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Before taking things apart and messing around I would suggest replacing the gas cap for starters. The gasket gets compressed after a while and fumes leak out. Its summer now and heat will cause expansion in the tank.
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Old 06-20-2003, 05:49 PM   #12
DevinM
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My tank has two lines that exit the top part of the tank on the passenger side of the truck. Which line does what, I Where does each line go, AND if I blow into each hose, what should happen? Backpressure? Free flowing???
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Old 06-20-2003, 06:41 PM   #13
1972ChevyGuy
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The lines go up the cab and i beleive to a vent hose in front of the door? Maybe mine was rigged like that at least :P
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Old 06-20-2003, 06:54 PM   #14
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1 line is smaller the other a bit larger, Both run under the cab and alont the frame on the right inside, and to the fuel pump, the larger of the 2 goes to the feed on the pump which out goes to the carb, the small goes tot he fuel pump too, not sure its function, maybe a return or vent.............
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