Triumph Repair: Leaking Stromberg, plastic tabs, float chamber
Question
Stromberg bottom plug
Hi,
I have a 1975 Spitfire with a single CD Stromberg carb. She was running fine when I bought her, but didn't want to start several weeks after I got her (I had a lot going on and didn't get back to her). After several months, I finally got back to her today. Put a fresh battery on her, sprayed just a few hits of carb cleaner in the air intake and she started like a charm. Seemed to run on her own gas just fine in less than a minute. However, gas is flowing steadily out of the bottom of the carb onto the exhaust manifold. Not good. The bottom plastic plug seems very loose. Could it be just the o-ring? Looks like it is gone completely at the base of the plug. I put an oversize o-ring on it that stopped the leak enough to run her for a good while, but it seems too fat to allow the plug to lock into place. Probably just need the correct size o-ring?
Thanks,
Bill
AnswerHi Bill,
As you can see the tangs on the plastic plug is what holds it in place. The "O" ring just fits in a smooth bore of the float chamber. If the tabs lock it in place and it don't leak it is ok. I found that the plastic tabs loose their ability to lock it in place after they get too old. I can't tell from your picture if you have the "O" ring in it's groove or up on it shoulder. The "O" ring belongs in the groove not up at the shoulder.
Howard
