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Havasu DougMale Offline
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'78 Challenger jet
Post Icon Posted: May 16 2005,12:59 am Post # 1 see this member send this member a private message  quote this post in reply
Here's a question that was emailed to me.
Quote
I have a 1976 Challenger recently purchased. The fiberglass tanks were replaced a long time ago...the problem is that the drivers side tank only empties 1/2 down. The passenger side tank drains all the way. There is a canister type fuel filter mounted under the transom but not in the center of the transom. So the fuel line on the drivers side from the tank to the filter is a little longer. There is not a "T" fitting where both lines come together prior to entering the filter. They both just go to the filter then to the electric fuel pump. Why does the drivers side tank only drain 1/2 and the passenger tank drains to empty? Is the simple fix just that the latch type filler on the drivers side is too tight and I should loosen the gasket to let more air in or what...thanks..Jess


I've never noticed uneven fuel tank draining on my Challenger.  Anyone have any ideas?

Incidently, my tank lines merge at a tee on the transom, then go to the fuel filter in one line. :)





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GoFastRacerMale Offline
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Post Icon Posted: May 16 2005,6:17 am Post # 2 see this member send this member a private message  quote this post in reply
This is a law of physics, if you pull from the top of the tanks it is a total miracle that you will draw evenly, one or the other will drain first. You can get them close by running equal lenght lines from the tanks!.. But in this case it is not plumbed right, should have equal lenght lines from the tanks to a "T" then on to the pump and on to the filter then to the carb!. Also the fittings need to be the same on both tanks, a more restrictive fitting on one tank will surely cause one tank to draw more!... Hope this helps!.. :good
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Havasu DougMale Offline
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'78 Challenger jet
Post Icon Posted: May 16 2005,7:28 am Post # 3 see this member send this member a private message  quote this post in reply
Quote (GoFastRacer @ May 16 2005,6:17 am)
This is a law of physics, if you pull from the top of the tanks it is a total miracle that you will draw evenly, one or the other will drain first. You can get them close by running equal lenght lines from the tanks!.. But in this case it is not plumbed right, should have equal lenght lines from the tanks to a "T" then on to the pump and on to the filter then to the carb!. Also the fittings need to be the same on both tanks, a more restrictive fitting on one tank will surely cause one tank to draw more!... Hope this helps!.. :good

Thanks Art.  :good





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GoFastRacerMale Offline
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Post Icon Posted: May 16 2005,11:14 am Post # 4 see this member send this member a private message  quote this post in reply
Quote (Havasu Doug @ May 16 2005,8:28 am)
Quote (GoFastRacer @ May 16 2005,6:17 am)
This is a law of physics, if you pull from the top of the tanks it is a total miracle that you will draw evenly, one or the other will drain first. You can get them close by running equal lenght lines from the tanks!.. But in this case it is not plumbed right, should have equal lenght lines from the tanks to a "T" then on to the pump and on to the filter then to the carb!. Also the fittings need to be the same on both tanks, a more restrictive fitting on one tank will surely cause one tank to draw more!... Hope this helps!.. :good

Thanks Art.  :good

You're quite welcome!.. :good
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