Ultra rich fuel mixture and flooding inlet manifold drains

[Walter74]

Hello,
I have recently revised my BJ7 engine. The engine is running, but with extremely rich mixture. The drain pipes from the inlet manifold are pouring fuel when engine is running idle.
I have checked carbs, timing and valves but everything seemed to be correct. Needles and valve seats are new. Float chamber level is correct. Jet level is also ok. When lifting HS6 piston with the engine running nothing happens to the revs.
I am pretty desperate at the moment, so who can help me solve this issue?

Looking forward to your replies

 

[MikeAH100M]

Had a similar issue and found that the brass soldered floats had a leak in them that would only open up when warm. Floats got bogged down and fuel leaked from drain pipe. Replaced with nitrophyl floats and problem disappeared

 

[Michael Oritt]

Had a similar issue and found that the brass soldered floats had a leak in them that would only open up when warm. Floats got bogged down and fuel leaked from drain pipe. Replaced with nitrophyl floats and problem disappeared

Walter--

Beyond checking for a sunken float make sure that the pin upon which the lever arm pivots is in straight and that the lever is not binding.

 

[Walter74]

Thanks for the quick replies. Both the floats and pins are new and in good shape. Any other suggestions?

 

[John Turney]

When that happened to me once, something was caught in a float valve seat.