rj27buick Posted January 30, 2012 Share Posted January 30, 2012 Got my 27 running this past weekend. used a temporary gas tank from a lawn mower to make sure I had clean gas to the carb. When I bought the car it had been sitting for at least 7 years ( last registration) but don't know how long gas has been in the tank. Gauge at tank shows 1/4 full? How do I test and/or clean the gas tank to ensure it is ok? Link to comment Share on other sites More sharing options...
Leif Holmberg Posted January 30, 2012 Share Posted January 30, 2012 I`m quite sure you have some car rust protektion shops in N.Y.If you empty your gas tank they can put a camera inside and look for rust or other deposites on a wiewing screen,but the problem is to move the car to the shop without gasoline?. Leif in Sweden. Link to comment Share on other sites More sharing options...
Mark Shaw Posted February 5, 2012 Share Posted February 5, 2012 I used Drano drain cleaner crystals & pea gravel in hot water to clean a 29 Buick tank. Remove & drain the tank, add two gallons of hot water, a quart of pea gravel, and a whole can of Drano. Seal all the openings and put on some rock and roll music while you agitate the mix to cover and scrape all areas of the tank. Drain, rinse, and leave in the sun with all openings open and/or use a hair dryer to help dry it out. Then inspect with a mirror to see if you need to repeat. Link to comment Share on other sites More sharing options...
FLYER15015 Posted February 6, 2012 Share Posted February 6, 2012 rj27,I did the Mark Shaw method, but I used 2 cans of CLR and pea gravel, shook the heck out of it, then took it to the car wash and "steamed" it out w/ the wheel cleaning cycle, brought it home and rinsed the heck out of it w/ the garden hose. Let dry for two days in the sun, then painted the outside satin black w/ rustoleum.So far the BIG clear filter we added @ the tank shows no deposits breaking loose.Mike in Colorado Link to comment Share on other sites More sharing options...
unimogjohn Posted February 6, 2012 Share Posted February 6, 2012 There should be drain fitting on the bottom of the tank. I would drain the fuel (outside in a big bucket) and then check to see what came out. Smell the gas, if it smells like old varnish then you know that the gas was bad. It will also be a burnt umber color, almost like your favorite cola soft drink. I would expect that some debris will also come out, if it is just a little then I would just pour in fresh gas and go. Do you have a filter after your vacuum tank? If not, I would put one on. I would use a temporary "see thru" plastic filter to see what debris, if any, it catches. Link to comment Share on other sites More sharing options...
rj27buick Posted February 7, 2012 Author Share Posted February 7, 2012 Thanks great suggestions. The outside of the tank looks solid but I fear what might be inside. Looks easy enough to remove so I will take your advice. The hardest thing may be to find a sunny day this time of year in ny!!! Link to comment Share on other sites More sharing options...
Mark Shaw Posted February 7, 2012 Share Posted February 7, 2012 (edited) A hair dryer on low heat works just like a sunny day... it rains a lot here too! Just make sure you leave enough openings open to let out all the air your blow into the tank. Edited February 7, 2012 by Mark Shaw (see edit history) Link to comment Share on other sites More sharing options...
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