Help and advice please if possible.
I have a 1979 850cc. which has always had running difficulties I pulled the head and fully refurbed (new valves stem seals, ground valves in etc). I noticed that the head is a CAM4180 (998 head?) running an SU HS4.
Once put back together the engine will turn over but not firing. Spark plugs are getting wet (from fuel), Valve clearances adjusted correctly, timing correct and spark plugs are new and firing in correct order. Engine will run spraying easy start into the inlet manifold with the Carb off.
Is it okay to run this 998cc head and/or HS4 or could this be causing the initial running issues. If not what could be the issues with the carb and should i rebuild the HS4 or should I swap to an 850 cylinder head and HS2?