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#93 Legacy gas cap?

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 Post subject: 93 Legacy gas cap?
PostPosted: Sun Apr 29, 2018 10:56 pm 
First Gear
Joined: Mon Apr 16, 2007 12:55 am
Posts: 89
Location: Near Seattle wa
So it looks like its vented. So is the tank pressurized or vacuum on these cars? It seemed like a vacuum the other day with original cap and today pressure with new after market cap. It was running like fuel starvation a few days ago. There just isn't much info about this any place. I'm thinking the cap allows air in the tank but not out.


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 Post subject: Re: 93 Legacy gas cap?
PostPosted: Tue May 01, 2018 5:35 pm 
Site Admin
Site Admin
Joined: Tue Oct 15, 2002 11:37 am
Posts: 27381
Location: Houston, Tx
The caps work like any other gas cap, the cap prevents vacuum by letting air in when vacuum develops in the tank. The FSM states this; check out page 20 of 336.

http://www.main.experiencetherave.com/s ... and_Elect/

If you were having vacuum issues then the old cap might be bad.

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Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
1997 Impreza OBS

If you need to get a hold of me please email me rather then pm


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 Post subject: Re: 93 Legacy gas cap?
PostPosted: Fri May 04, 2018 8:50 pm 
First Gear
Joined: Mon Apr 16, 2007 12:55 am
Posts: 89
Location: Near Seattle wa
Yeah that is normal, just never know about these things. The pump would be fighting a vacuum.


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