Re: Question about fuel tank sealant

Posted by Bob Kerr on August 11, 2007 at 07:16:03 from (205.188.116.73):

In Reply to: Question about fuel tank sealant posted by Mike CA on August 11, 2007 at 09:57:53:

Hi Mike, Congrats on your new H!, On the sealer thing here are a couple things I can help with. First off, the sealer may have failed because of the switch to the MTBE Oxegenated fuel started in California back in the late 90s. There were a lot of problems with older vehicles with fuel pumps, rubber hoses, possibly with sealers also. Some older sealers will disolve in alcohol also. I had trouble with a purple sealer supposedly used in aircraft on my 10-20, I will avoid using sealers ever again. If it were mine I would get the old sealer cleaned out totally and use those glass marbles the ladies use in flower vases or clean washed gravel and a gallon of water to clean out any loose rust in the tank. Shake it for as long as you can stand it, clean out the marbles and tip the tank up with one corner down and syphon off the sediment. I have done that now on two old cars I have and no problems since. I use a bottle of HEAT to get all the water out after cleaning. If you find any pits in the tank that leak, use the NOS one as it will leak again even with sealer in it. Just be sure to keep water out of the tank. If it sits outside, the vented gas caps have holes on top and will let water in, cover them if it rains. Good luck with it and hope to hear how it goes., Bob

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