70hp Falls on its face @ take off and loading

[firestopper069]

I have a 1995 E70TLEOR. On the muffs it seems to run ok. But under a load its a dud. @ top end seems to do well. Her is what I have done to it. Replaced with new primer bulb and line. Rebuilt the carbs.(local boat mech did carbs). Comp is 150-148 on all 3 cyl.Removed VRO pump and put a new standard fuel pump on. I'm mixing 50:1 on the fuel. Also the boat is a 98' Grumman. story short 95' is old style harness and boat is new style. I have installed the factory harness conversion kit. No plug change yet. Prob need to. Also was told could be intake gasket. Any help is appriciated. O, I am a probie here so you might have to email me. firestopper069@gmail.com Thanks Donnie

[tony edwards]

tony edwards

i would double check carbs to be sure that all p***ages are clear. not sayin your local tech. dont know what is goin on. but i have had this problem before due to improper cleaning. if this is not the problem, it is probably a linkage and synchronization problem. what that is, the carbs and timing have to work at the correct time to operate properly. im sure most manuals have the correct directions for doing this procedure.