if you suck on the line coming from the center carb, it should activate the diaphrams on the 2 outboards. The vacuum signal from the center carb is what brings in the outboards
Bill, diaphragms barely move and I am sucking mostly air from somewhere? Little or no resistance
Possible broken diaphams, easy enough to find out, just open them up. You can do it with them on the carbs as well but this shouldn't account for an idle that high, the correct port on the center carb that activates the outboards is venturi vacuum so it should be virtually non existant at idle
good point, if this is an older carb there's no doubt they would benefit from a rebuild. Chicago carburetor has the kits for the center and outboards. You should eliminate the vacuum leak first though, make sure the pcv is working and if so then plug all the ports on the center carb except the pcv and see if you can get it to idle, if no change then do the propane test. If you can't find a leak anywhere then a rebuild is in order
ahh, there they are
that pcv hose connected to the float bowl is an absolute no-no!
Ok, great info and I have all those correct now. T I discovered the advance port on the center carb was loose and could be pulled out. I sealed it but now that it will idle I cannot seem to advance the timing no matter how far I rotate the distributor. I can retardation it to the point of stalling but cannot advance it to TDC? Car fires on first turnover? I can advance my timing light and when I advance it to 90 timing mark hit TDC?
Now we have another problem, no way you should be running 90 btdc at idle or for that matter any rpm. You should be somewhere near 34-36 all in. If you are actually at 90 btdc and you run her hard, you're fixing to blow a hole in a piston!
