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Old 01 February 2017, 13:35   #1
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Country: Denmark
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Camel Trophy, Ribtec 655, Fuel Tank

I am making complete refurb of an ex Camel Trophy. Console, seats, engine, tubes......

Question is. The two in deck fuel tanks, good advice, experience or ?

Do I have to take them out to check for leaks ? Any experience by a pressure test ?
Off course, I can just cut the deck open and check but....

Hope to hear any suggestions

Thanks

Best Thomas, Denmark...
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Old 01 February 2017, 15:11   #2
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Easy to pressure test in situ IMHO

Drain as much fuel as possible then blank all the fuel connections bar one. I blanked the fuel filler by using a mountain bike inner tube cut in half lengthways, knot tied in each cut end then stuffed down the filler pipe and inflated until it formed a good seal.

I left the fuel feed hose open, blew air into the tank to slightly pressurise the tank then connected this hose to a simple clear silicon tube making a 'U' shape with some oil in it. The oil level is forced up the silicon tube by the air pressure to a certain point. Mark this point and monitor for a few hours. If the oil stays at the elevated level then the air pressure is not decreasing. I'm sure simple pressure gauges can be purchased instead.
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Old 01 February 2017, 15:22   #3
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Country: Denmark
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Quote:
Originally Posted by diver 1 View Post
Easy to pressure test in situ IMHO

Drain as much fuel as possible then blank all the fuel connections bar one. I blanked the fuel filler by using a mountain bike inner tube cut in half lengthways, knot tied in each cut end then stuffed down the filler pipe and inflated until it formed a good seal.

I left the fuel feed hose open, blew air into the tank to slightly pressurise the tank then connected this hose to a simple clear silicon tube making a 'U' shape with some oil in it. The oil level is forced up the silicon tube by the air pressure to a certain point. Mark this point and monitor for a few hours. If the oil stays at the elevated level then the air pressure is not decreasing. I'm sure simple pressure gauges can be purchased instead.
Thanks a lot
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Old 02 February 2017, 14:20   #4
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What if the barometric pressure changes during the test?
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Old 02 February 2017, 14:45   #5
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What if the barometric pressure changes during the test?
then theres a leak somewhere
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