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| | | | Joined: May 2007 Posts: 222 Shop Shark | | Shop Shark Joined: May 2007 Posts: 222 | Replaced the fuel line and pump on a 49, 216 engine and now I have a horrendous fuel leak somewhere at or near the carburetor. It does not leak when it's cranking over, only when the engine starts and then it showers out at or near the carb so bad that I have to shut it down before I can locate the leak, I'm deathly afraid of having a fire it's leaking so bad. It's a newer rebuilt carb, could something be leaking on it all of a sudden? Thanks for the help
Joh 3:16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
| | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | Bolts/screws not tight. Wrong gaskets in carb or between carb and manifold. Float setting wrong. Fuel pump pumping too many PSI's.(as in: wrong pump) Vacuum leak. Needle fell off hanger or set wrong. Loose fittings/hose clamp, broken/cracked hose, etc. Throttle shaft leak, mis-assembled accelerator pump. There, that narrows it down for ya.
You really, really need to define to us where it is leaking. Start with dry carb, extra person, powerful light, a mirror for the rear and a fire extinguisher. "Showers out" ???? Big leak? Of course the big question is when did it start? After rebuild carb? Right After new line and pump? When did it not leak? I know nothing about 216's but have had those kinds of leaks. The 216 boys will know better.
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| | | | | Joined: Aug 2011 Posts: 835 Shop Shark | | Shop Shark Joined: Aug 2011 Posts: 835 | I have had this happen a couple of times, and it had to do with the carburetor float and needle valve. The first time it happened I had put on a new fuel pump, and missed the fact that the old pump had a filter, and the new one did not. This resulted in a piece of trash getting caught in the needle valve, and the carb then overflowed with gas. Second time was when a hole developed in the float, it "sank" and too much gas in the carb again..
Other typical place to have a leak on the rochester B carb is at the fuel fitting in the body of the carb. The fitting won't seal at the carb because the pot metal of the carb has become damaged. Teflon tape will not help or can make the problem worse. Easy fix is to "glue" the fitting in place with a thread locker of epoxy.
Kurt | | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | It is common to have the fuel pump pressure on a new pump higher than the old worn pump. This can make it necessary to readjust the float level. | | |
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