Dear HS30-H thanks for the professional reply this really means a lot to me and helped me to think, this car is original import from the Uk the one with no air condition version, i have got it few years ago back in the time, after we bought it and lack of knowledge with the L series engine, after a few times run we have left it the storage then every time when i try to start up again the usually is too much fuel in the engine and all the sparks plug are flooded, we thought it was the fuel pump then we changed a new one still happening, and found out all the rust in the fuel tank, we though it was the rust blocking the fuel rail, after we changed to a new fuel tank, the problem is the same, then i have bought the oer racing carb cause we thought its the Su dual crabs is damaged, now we still got to much fuel even leaking out of the engine through the spark plugs hole,
and no man i don't have a factory service manuals, i have got a L24 crankshaft which is refurbished from japan which shipping during this weekend and see what will happening, cause in long term seems like getting a L28 to replace in it is a better option due to L24 engines parts are getting harder and harder to found now days.
with best regards bro i really appreciated guys like you giving me some opinion to see what to do next.