Hi, my name is Kerry

There is an adjustable link between the carburetors.

It sonds like the adjustment is off and one carburetor is loaded open

They need to be adjusted so both idle stops are the same, then they need to start opening at exactly the same time.

There is a little finger on one carb linkage that fits into a slot on the other carb. There is a screw that clamps the linkage in place on the throttle shaft, you loosen the screw and turn the linkage so it's just touching the other one.

Set the idle stops so that the throttle plate is just cracked and the same on both carbs. Then adjust the linkage so that they both start opening at the same time.

No, I'll look for a parts diagram

http://www.marinepartseurope.com/en/volvo-penta-explodedview-7736850-23-12824.aspx

number 32 in the diagram is the slot that the finger fits into. The part with the finger is on the carb that isn't shown

I think I had the wrong carb there

http://www.marinepartseurope.com/en/volvo-penta-explodedview-7736850-23-12804.aspx

Is this one right?

Just copy and paste it into the browser

It's a link to a parts diagram

The site doesn't allow it

There are a few different AQ130s and they have different carbs

The last link is for the AQ130A and B

Yes it sure does

The AQ130C has a different carb

http://www.marinepartseurope.com/en/volvo-penta-explodedview-7736850-23-12811C.aspx

oh

Is that AQ270D ?

Is this a 4 cylinder engine?

or a v-8

Okay, the drive is a 270 and the engine is probably a 130 but the suffix for the engine model?

There is also a 130D, similar to the 130C

The D and C models look like this

http://www.marinepartseurope.com/en/volvo-penta-explodedview-7736850-23-12811D.aspx

okay

So I had the right carb the first time, the link between the carbs is adjustable and it sounds like something is keeping the back carb from cosing all the way.

closing all the way.

Just looked in a manual to refresh my memory, you have a rod between the carburetors where the throttle cable connects.

On the ends of the rod, there is a finger that goes in the notch on the carb.

The ends are adjustable,

Back out the idle stop screws so that the throttle plates close completely. When both carbs are shut, adjust the linkages so the open at the same time.

Then set up the idle stop screws so it idles. Both screws need to be set the same, turn in until it contacts throttle linkage and count turns from there so both are the same

Yes the rod between the carbs

The linkage consists of the rod, the ends on the rod and the parts on the carburetor that connect with the rod

From the control?

The ends of the rod can rotate on the rod when you loosen the screw.

A problem with the control can't make only one carb stay open, the problem must be at the carb linkage

A manual might be a worthwhile investment,

You might be able to get a download, if not try a marine store

You're welcome