I've got a 1997 Volvo 5.7GL, Model 572BPLKR. It has what I think is a Holley 2300 2 barrel carb on it. I recently noticed a stain around one of the idle mixture adjust screws. Looks like it could possibly be a very slow fuel leak that has varnished without dripping down.
I was recently checking the idle screw adjustment as the engine idles ok but will sometimes shudder or stall while idling in gear after a few minutes. Does anyone think there is a link between the brown staining around this screw and the idling problem? The screw is 1 turn out from all the way in. The other screw is adjusted the same amount but doesn't have a stain.
Is this a problem anyone is familiar with? Thanks!
I was recently checking the idle screw adjustment as the engine idles ok but will sometimes shudder or stall while idling in gear after a few minutes. Does anyone think there is a link between the brown staining around this screw and the idling problem? The screw is 1 turn out from all the way in. The other screw is adjusted the same amount but doesn't have a stain.
Is this a problem anyone is familiar with? Thanks!
