Right gas cap
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From: Wilton, Ca
Right gas cap
How would you know that you are getting the right gas cap.So far I have put two new ones on and the both fail CA SMOG.Ford does not go back that far so it is a after market thing.
Don
Don
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Being California with a CC It is an Evaporative system.
Evaporative Family L-5
http://www.clubfte.com/users/mil1ion...tivesystem.jpg
1977 F100-F350 aft tank w/evap system is Motorcraft # FC-793
Is it auto trans or manual ?
Evaporative Family L-5
http://www.clubfte.com/users/mil1ion...tivesystem.jpg
1977 F100-F350 aft tank w/evap system is Motorcraft # FC-793
Is it auto trans or manual ?
Last edited by Mil1ion; Apr 17, 2006 at 12:28 AM.
Thread Starter
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From: Wilton, Ca
Originally Posted by Mil1ion
Being California with a CC It is an Evaporative system.
Evaporative Family L-5
http://www.clubfte.com/users/mil1ion...tivesystem.jpg
1977 F100-F350 aft tank w/evap system is Motorcraft # FC-793
Is it auto trans or manual ?
Evaporative Family L-5
http://www.clubfte.com/users/mil1ion...tivesystem.jpg
1977 F100-F350 aft tank w/evap system is Motorcraft # FC-793
Is it auto trans or manual ?
Last edited by RDON; Apr 17, 2006 at 09:47 AM. Reason: ADD TO
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Post Fiend
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From: Northern California
Originally Posted by RDON
It is a manual 4 speed WITH OUT A CC
Is this a vehicle equipped with California, or Federal "49 state" smog? If it's california, it should have a CC, unless the vehicle is over a certain GVWR.
My 73 F-100 302-V8 had a CC.
Why are the new caps failing? Is it because of the pressure release or is it because of it not sealing right?
I'll make a few suppositions, and say that it's possible that you have the right gas cap for your vehicle, and the computer tester is failing it because it's testing it as if it was a cap for a vehicle equipped with a CC.
Or, you are getting a cap for a vehicle with a CC and the computer is failing it because the caps are different, for a non CC equipped vehicle.
or... I have had brand new gas caps, that were the right ones, fail the smog test, because they are not built quite right, and they dont seal properly.
Good Luck.
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From: Wilton, Ca
Originally Posted by Mil1ion
I have a cross reference list if you find another make of cap.
CARQUEST INVOICE ARE CCA 34070 part number
In looking at the cap I can't see brand name.It has "vented" at the top and on the botton it has"ant-surge" remove slowly
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No cross-reference for FC-807.
Let me share another resource with you.
http://www.rockauto.com/catalog/cata...&parttype=5900
Let me share another resource with you.
http://www.rockauto.com/catalog/cata...&parttype=5900
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Now you see what I was up against without a motorcraft cap being available 
I especially like the *more info* hyperlink that shows a pic of the cap
This is the one I picked.
STANT Part # 10749
Styleside; W/O Evaporative Emission System; W/Aft, Mid Tank {Regular Fuel Cap}
I especially like the *more info* hyperlink that shows a pic of the cap
This is the one I picked.
STANT Part # 10749
Styleside; W/O Evaporative Emission System; W/Aft, Mid Tank {Regular Fuel Cap}
Last edited by Mil1ion; Apr 17, 2006 at 11:39 PM.
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