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Old 03-11-2012, 04:30 PM   #1
Arl37
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Gas tank vacuum

69 C10. Is gas tank supposed to be under vacuum when I remove gas cap?
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Old 03-11-2012, 04:58 PM   #2
hayhauler71
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Re: Gas tank vacuum

No it should not be under vacuum your gas cap should be vented
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Old 03-11-2012, 05:02 PM   #3
lil hoodlum
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Re: Gas tank vacuum

If it helps any, I order and received one from LMC last week. It is a vented one.

Fram part # PRG-23.

I bought two locally one from Oreilys and the other from Car Quest. I told them vented gas cap. Well you guessed it, both were non-venting.

Good luck!

Keith
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Old 03-11-2012, 05:03 PM   #4
dennislbrooks
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Re: Gas tank vacuum

agree -- try a new cap --- happened to my cub lowboy and it would actually run lean and die
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Old 03-11-2012, 06:32 PM   #5
Arl37
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Re: Gas tank vacuum

Very interesting. Thank you!
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