Strange Vibration

[adasilva]

ok so going through everything im going to start with your cracked carbs
were they cracked all the way through or just the outside?
all should make sense if they were through and were leaking  UNfiltered air in and the previous owner has increased the pilot screws to let more fuel through to richen up the lean conditions caused by leaking inlets (we good so far)


if there is now no UNfiltered air going in the inlets anymore it draws it through carbs so increases the negative pressure/flow rate in the carbs and in turn the airbox which means more air is needed to flow through the air filter than previously, so a blocked air filter may be to blame here (and would actually make the UNfiltered air coming through the old inlets even worse)


so a combination of things will be causing you issues here
you have already replaced inlets -should only be filtered air now
1. running rich as pilot screws are allowing too much fuel to flow screw them back in a bit to factory
2. air flow is restricted causing a negative pressure which sucks up more fuel making run even richer - pull air filter and replace (worth doing anyhow)


this is just the things that are popping into my head as i read all the problems that you are systematically going through which is the best way

ok that makes sense since some of the rubbers were cracked a bit bad. I did clean the pilot screw if that what you mean but i did count the turns that were already set by the previous person that worked on the carbs and i reset it as it was.
So it makes sense that is running even richer then. I will be getting the new filter tomorrow and will post an update


Thanks very much.