回复：多谢。再次检查了排气管，肯定没漏（加拿大天冷，漏气一眼能看见）而且，现在

来源: 于 2014-01-22 19:01:46 [旧帖] [给我悄悄话] 本文已被阅读：次

Sometime you probably have to use hand (and of course very careful, it is extremely hot if running for a while) to feel if hot air leaking out - it is not always white smoke.