Volvo AQ125a Solex 44 PA1 carb issue

[kamby]

I have a solex 44pa1 carb on an AQ125a the engine is a fresh rebuild and so is the carb. The boat runs fine at idle but when you accelerate it wants to die and sometimes backfire as a result of struggling and too much fuel going in, if you do it quckly it wont die, unless your in gear in the water.

I was reading the factory manual and it said carburetors with main jet 165 and venturi jet 190 should have the spacer installed. with a gasket on either side. So I took the two jets in question the venturi has jet 180 and the main jet is 155. Does this mean I need to remove the spacer with the restrictor on it and will it eliminate the flat spot.
If not what position is that plate supposed to go. I assumed its with the arrow pointing towards the front of the engine and the wording up of course.

Anyone got any ideas I want to fish this weekend and don't want to have to idle to my fishing spot. Timing is fine and I have the pertronix kit installed. Both the engine and the head are date stamped in 1983 or 1984

Thanks
Jason

 

[Bondo]

The boat runs fine at idle but when you accelerate it wants to die and sometimes backfire as a result of struggling and too much fuel going in, if you do it quckly it wont die, unless your in gear in the water.

Ayuh,.... Back-firin' is usually caused by a Lean condition,.....

Not a Rich condition,.....

 

[kamby]

Thanks for the reply. Seems no matter what i do to adjust it. The carb acts the same way. Im going to take the plate off afterwork and see what it does. Sounds good at idle and high speeds. just not in the transitiion I wonder if that plate blocks off enough fuel to run crappy. I had the same issue on the old motor but not as bad with this carb.

 

[reptileguy]

Had this same problem. If you begin to stall out around 2200 rpm when the throttle plate just starts to open and you drop in rpm you may have a bad coil. Took forever to find that on mine. But if it has same symptoms and backfires a bit but if you push past it on throttle then it's ok. You may need to adjust your accelerator pump. The moment the throttle plate opens there needs to be a shot of fuel by the pump to compensate for the rush of extra air in the mix