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hi, are the plugs getting gas fouled or oil fouled ?
did you change the intake so that you could have a 4 bbl because the original intake from the winnebago was a two bbl ?
ok, I don't have the specs in front of me but do you know if the plugs are gaped the same for the 65 and the 72 ? also, does this have points in it or was it switched to an electronic ignition >?
what do you have the timing set at ?
when a point system is changed to electronic the timing is different
the timing I know for the 65 with points is 10 before TDC
and the vacuum should be direct -that is there should be vacuum at that hose at idle .
even though it runs good as you say ,spray carb cleaner at the intake to check for vacuum leaks .
I would think that if the timing is too far advanced that would also, create a rich issue but a vacuum leak will
have you adjusted the air/gas mixture screws on the carb ?
ok, the air/gas mixture screws are adjusted using a tach/rpm meter .
each screw should be turned in untio the rpms drop then turned out 1/4 turn until the highest rpms can be achieved
If you see gas dribbling out the jets inside the carb then the issue is the carb .
and a vacuum or gasket issue will show low or unsteady vacuum readings.
the end result is if just adjusting the mixture screws and you can get it to smoke or not smoke that way ,then I would think a carb problem ..jazzmaster ..
hi, just checking back to see if you still need assistance ?...jazzmaster ..
sorry I was working .so the carb that is on is new and you are still having issues ?
can you see gas dribbling out the jets in the carb at idle ?
ok, did you set the timing and what did you set it at ?
when you checked with a vacuum gauge (I know you said it was in the green) but what was the actual reading (inches) and did you spray around the intake as well ?
did you recheck the timing ?
did you rejet this because of the fouling of the plugs ..
the timing should be around 8-10 btdc base timing before the vacuum hose is connected .
it's retarding the timing ,I have seen that many times but let me ask you ..
what kind of intake do you have on there ?
the intake and carb may be too much for the motor if there was nothing done to the motor .
you said the motor ran great before you put the intake and carb .
do you have direct or ported vacuum to the dist ?