volvo carb rebuild problems :( help

[madera]

'78 trihull volvo AQ130D,2-single solex 44 carbs. rebuilt carbs,carbs sync'd,no timing belt, new plugs, plugwires, timed(8btdc), cleaned points,new in-line fuel filter, was previously having problem with engine stumbling when you give it the gas hard(ie-like pulling up a skier), I reduced the amount the accelerator pumps dump due to backfire, still stumbles and now its really hard to start? does any body have any suggestions? what would adjusting timing do?

 

[Don S]

Re: volvo carb rebuild problems help

Put the settings back to factory specs, then the carbs need to have the idle mixture adjusted properly, and in sync with one another.<br />If you have the carbs adjusted to lean or to rich, you will get the stumble.

 

[Dunaruna]

Re: volvo carb rebuild problems help

I would add that its not worth skimping on points, fit new points (and condenser) and adjust them with a dwell meter.<br /><br />Aldo

 

[Barry the Limey]

Re: volvo carb rebuild problems help

It does sound like a mix prob. The air volume screws, the one on the base plate of the carb, should be screwed in util it just seats. Then turn it out 1 1/4 turns. This is back to basically the factory settings. <br />Are the carbs both opening at the same time, ie running in sync.<br />You say you rebuilt them. Did you check for wear on the spindles. Wear here lets air in leaning out the mix. I had that prob with mine.