MCHAM Posted July 11, 2011 Share Posted July 11, 2011 On my 1992 RD690S the fuel tank on the d. side is barely flowing into the pass. tank. I don't know what happen over the week,cause it just started doing it today. The only thing that I changed was the fuel cap, cause my old Mack cap wouldn't tighting up. I got the new cap off of a International. Thanks for the help ahead of time. Quote Link to comment https://www.bigmacktrucks.com/topic/19721-fuel-not-flowing/ Share on other sites More sharing options...
Rob Posted July 11, 2011 Share Posted July 11, 2011 On my 1992 RD690S the fuel tank on the d. side is barely flowing into the pass. tank. I don't know what happen over the week,cause it just started doing it today. The only thing that I changed was the fuel cap, cause my old Mack cap wouldn't tighting up. I got the new cap off of a International. Thanks for the help ahead of time.The old fuel cap was doing the venting. The new cap is sealing the tank. There should be a vent in the top of the tank. Most have a hose attached that runs down the backside of the tank and is open to atmosphere. If there is no vent as mentioned, get another fuel cap correct for the application.Rob 1 Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/19721-fuel-not-flowing/#findComment-81598 Share on other sites More sharing options...
MCHAM Posted July 11, 2011 Author Share Posted July 11, 2011 Let me see if I understand you right. So the reason my fuel is not going into my other tank is the fuel cap? Quote Link to comment https://www.bigmacktrucks.com/topic/19721-fuel-not-flowing/#findComment-81599 Share on other sites More sharing options...
Mike Posted July 11, 2011 Share Posted July 11, 2011 Let me see if I understand you right. So the reason my fuel is not going into my other tank is the fuel cap? I believe Rob is saying you may have a restriction in the vent line on that side tank. Your old cap was leaking, being the vent. Now that you have a non leaking cap, you also have no vent with the new cap is sealing so well as is supposed to do. Check the vent line behind or on top of your tank for a restricted line or hose. mike Quote Link to comment https://www.bigmacktrucks.com/topic/19721-fuel-not-flowing/#findComment-81600 Share on other sites More sharing options...
hatcity Posted July 11, 2011 Share Posted July 11, 2011 Let me see if I understand you right. So the reason my fuel is not going into my other tank is the fuel cap?Thats what rob was saying. The old cap had a vent built in, the new one seals the tank. If you run a while, then stop and open the driver side tank, you will prolly hear air surge in. Kinda like a 5 gal bucket that you tip too far and the stuff inside will chug.BTW- corn binder parts DO NOT belong on a . That could be the problem anyway Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/19721-fuel-not-flowing/#findComment-81601 Share on other sites More sharing options...
rhasler Posted July 11, 2011 Share Posted July 11, 2011 BTW- corn binder parts DO NOT belong on a . That could be the problem anywayYou can say that again! Quote "Mebbe I'm too ugly and stupid to give up!" Link to comment https://www.bigmacktrucks.com/topic/19721-fuel-not-flowing/#findComment-81602 Share on other sites More sharing options...
hatcity Posted July 11, 2011 Share Posted July 11, 2011 You can say that again!BTW-corn binder parts DO NOT belong on a That could be the problem anyway Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/19721-fuel-not-flowing/#findComment-81605 Share on other sites More sharing options...
theakerstwo Posted July 12, 2011 Share Posted July 12, 2011 It needs a blow job. to clear its tubes or lines. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/19721-fuel-not-flowing/#findComment-81607 Share on other sites More sharing options...
Rob Posted July 12, 2011 Share Posted July 12, 2011 It needs a blow job. to clear its tubes or lines.AS DO WE ALL!!Rob 1 Quote Plodding along with no job nor practical application for my existence, but still trying to fix what's broke. Link to comment https://www.bigmacktrucks.com/topic/19721-fuel-not-flowing/#findComment-81609 Share on other sites More sharing options...
randyp Posted July 12, 2011 Share Posted July 12, 2011 heh heh heh,,,yous guys is a riot! randyp Quote Link to comment https://www.bigmacktrucks.com/topic/19721-fuel-not-flowing/#findComment-81619 Share on other sites More sharing options...
MCHAM Posted July 13, 2011 Author Share Posted July 13, 2011 Thanks guys for the info. I got a new cap from Mack today, and the tank is flowing once more Quote Link to comment https://www.bigmacktrucks.com/topic/19721-fuel-not-flowing/#findComment-81715 Share on other sites More sharing options...
gearbox Posted July 13, 2011 Share Posted July 13, 2011 Correct part for the Job lucky it was easy, not to turned into a mongrel breed Quote Link to comment https://www.bigmacktrucks.com/topic/19721-fuel-not-flowing/#findComment-81743 Share on other sites More sharing options...
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