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03-04-2009, 05:20 AM
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Canadian Gashole
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Join Date: Mar 1999
Location: Quebec, Canada,
QC
Cobra Make, Engine: Johnex 427 S/C, 351W, 472 HP, 444 lbs. torque
Posts: 2,455
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Not Ranked
Quote:
Originally Posted by Blas
Then why are both my Mercedes not grounded at the fuel filler? I'll check the Passat tomorrow and the Porsche over the weekend...
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The gas filler caps on these cars are grounded assuming they have metal bodies. The gas inlet/filler is bolted to the body so there is no need for a separate ground wire. My Cobra has a fiber glass body, hence I grounded the filler cap to the metal frame. It may or may not be necessary but I figured, what the heck?
I have worked with flammable chemicals for over 40 years. All tank trucks must absolutely be properly grounded before loading or unloading to avoid the chance of a static spark igniting the product.
Wayne
__________________
Don't get caught dead, sitting on your seat belt.
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03-04-2009, 07:40 AM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,409
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Not Ranked
Wayne,
When I take an ohm meter and connect one end to the car chassis and then touch the other end to the filler pipe there is no conductivity on either of my Mercedes. I then touch something else on the car and there is...No two ways about it? The gas caps are both plastic where you grab them, so you probably don't really connect electrically to the car when you remove it...Surely the TANK is grounded by way of its mounting to the car...
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, Cinema Tribute Cars $ GT40’s..
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
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03-04-2009, 10:04 AM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,409
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Not Ranked
Interesting point: I called Fuelsafe and they did not appear to have a definitive answer either way on the grounding of the filler neck....
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, Cinema Tribute Cars $ GT40’s..
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
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03-04-2009, 10:13 AM
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Senior Club Cobra Member
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Join Date: Dec 2001
Location: Shasta Lake,
CA
Cobra Make, Engine:
Posts: 26,619
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Not Ranked
Blas,
On my 1965 Comet I can take the gas cap off, it is a locking one and some kind of metal, then touch my ohmmeter lead to the edge of the filler tube and the other to the chassis and I do get a reading. It could be via the tank straps that hold the tank in but when I looked under it I saw a wire that went off to the side and to a bolt on the frame. Don't know if that was stock or if it was added as I bought the car used. When it warms up enough I will go check on the 69 Cobra and see if is is grounded. As I said in my earlier post, I tend to err on the side of safety. To many grounds won't hurt.One to few could possible hurt.
Ron  |
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