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The case of the perculating petrol tank.
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hey yall, in this episode we come to the case of "The perculating petrol Tank", The tank is an ex diesal tank, now running petrol, untill she goes on straight gas, the main pipe to the carby is in, and the other pipe coming out of the tank, was just sitting there,! so when i was working under the car, every 15mins or so, i could hear this gurgerling, rumbling sound, and then out of the other pipe would come,,petrol....?? not alot, but maybe 50mls, I havent been able to figure out why?? the tank is not full, and the old return pipe is higher than the tank?? I have since plugged the end of the return pipe, but fear this will only make it impossible for the tank to be pumped from? and the tank will collaspe?? and thoughts will be appreciated, maybe drill a hole in the filler pipe, and stick the spare hose in there?? once she is on gas, all this will not be a prob, thanks already,
ptpro madmax transit, 308t400 campervan |
more than basketcase than a bear! DOH!!! |
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Joined: 28/04/2005(UTC) Posts: 758
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Gee u give us some good ones !!
OK. it seems like the extra pipe is sitting below the fuel level. As a diesel expansion wont be such a problem, but petrol does expand, well the vapours do. This may be a diesel breather that is now reacting very badly a
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Rank: Veteran
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Hey HQtrublu, first,,, off course i give u some good ones!!! the first requisite to great undertakings,,is to choose a great undertaking to take!!!? and i certainly pick some ripper projects!!! and this always leads to various never before seen probl |
more than basketcase than a bear! DOH!!! |
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yea I would do the cap. That can easily be replaced. Fartin around with a good tank could get expensive.
John
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Just had another thought on this line, and yes i agree with u. Most likely the fuel return line.
Cheers J
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Joined: 25/05/2007(UTC) Posts: 206
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Hey Bear, a dumb question for you. You havent mixed the two lines up? Maybe you have the breather from the top of the tank going to the carb, and the open pipe is actually the feed pipe?
Regards
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Oh!! 81837!! what your implying is,,that I Basketcase Bear!! would connect the wrong pipe to the carby????,,,is that what your saying?? Well..!! let me just tell you...>> This little black Bear,,,had a problem with his diesal, so he put the wrong |
more than basketcase than a bear! DOH!!! |
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Joined: 29/08/2005(UTC) Posts: 243
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what straight gas system are you going to use.......? curious
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Hey muskell, i got the motor auto etc complete with gas system, i think it is a impco, but it has to have an extra tank fitted as well, hoping to have approx 180litres total, have to wait till i get to mr installer to have a cook, and then we will see?? |
more than basketcase than a bear! DOH!!! |
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Ive heard straight gas is better.....you better you better you bet....but just how much better.....so it will be interesting to see........maybe its 5% better in which case I think it would be worth it. Also have you thought about cold air intake.....?
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Joined: 29/08/2005(UTC) Posts: 243
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I've heard straight gas is better.....you better you better you bet....but just how much better.....so it will be interesting to see........maybe its 5% better in which case I think it would be worth it. Also have you thought about cold air intake.....?
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hey muskell, havent got to the finer advantages of different ways of efficency, be happy just to get her on the road first, I presume cold air intake is similiar to diesal pre coolers?? will looky up on the net? cheers
ptpro madmax transit, 308t4 |
more than basketcase than a bear! DOH!!! |
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doesn't matter if the pipe is above the fuel level, the end of the pipe is in the fuel, so when the fuel vapours and liquids expand they push fuel up the pipe then when it starts to flow down it siphons out and so runs out the end. Cure? vent the tank.
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Rank: Veteran
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Joined: 1/03/2005(UTC) Posts: 1,991
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doesnt matter if the pipe is above the fuel level, the end of the pipe is in the fuel, so when the fuel vapours and liquids expand they push fuel up the pipe then when it starts to flow down it siphons out and so runs out the end. Cure? vent the tank. m
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Rank: Veteran
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Joined: 2/08/2006(UTC) Posts: 1,307
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hey thanks john, i have split a small part of the rubber in the sealed cap, and also plugged the end of the other pipe,, i think this has worked, thankee all
ptpro some men see things as they are, and ask "why" I dream of things that never were, an |
more than basketcase than a bear! DOH!!! |
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The case of the perculating petrol tank.
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