Hello all,

The Brick: 67 122s Estate, B20, Twin SUs (HS6).

The Symptom: While trying to start, I get one 'pop' of ignition about every 3-4 seconds of starting, but no sustained ignition.

The history: new ignition components, in working order, static timed, and just got done cleaning and putting the fuel pump back on (though it still may be a source of the problem...but I know fuel is getting to the carb bowls). I limped this car home in october and it didn't really like to be driven then, which means it kept wanting to die when stopped, so I had to keep on the choke/gas pedal whenever I stopped.

The Question: Does any one know of a good (cheap) carb rebuilder that I can send this thing to? I don't feel quite qualified for carbs (my other four volvos were FI)...is it really hard to rebuild myself?

I'm in Eugene, Oregon, by the way.

Thanks guys (and gals if there are any on bboard).

Brian

It sounds like your timing is 180 degrees off. Are you sure you set the static timing on the compression stroke? The timing mark also lines up on the exhaust stroke.

Brian;

I suggest you make sure IGN hardware is correct as others have mentioned,then adjust carbs if necessary...info here should help: http://www.sw-em.com/SU%20Carb%20Service.htm

Sorry...I´m not at the Embassy at the moment with only limited access, so can´t go into detail, but you will be well advised by others around here I´m sure...

Cheers

I agree, check the timing. If you still want to rebuild the carbs, then send them to Rhys Kent at Island Automoton (google him). Rhys is active on this board.

After refit, the ignition is 180º out?

yeah, as someone who really F'd that up before, Try "advancing" all your ignition wires about 180 degrees. The "pops" are a common symptom of having the whole setup reverse. I kept getting it wrong because I set the timing to the exhaust stroke not the compression stroke. One of the volvo gurus suggested that you pull the #1 spark (you'd be doing this anyway to set static timing) and then crank the engine (by hand) with your thumb over the #1 spark plug hole until you feel air push your thumb away. That's true #1 TDC.

If that is not the problem and you get a good spark when you set your static timing, then take the carbs set to a basic startup setting. Mixture setting about 12 flats (two complete turns) down from the top-most setting, and the throttle screws adjusted about 3 turns down.

If that fails, open up the float chambers and fill them manually. You should be able to start and run the motor for a couple minutes without any fuel at all from the tank.

Try to narrow the issue down by confirming each part of the ignition system Fuel, Compression, Spark

You are in the land of volvos and knowledgeable mechanics ought to be hanging from the trees out there.