Carb Knobs Needs Constant Attention

[pillazilla]

my 57 big twins carb needles need constant adjusting while boat is in gear, vibrations causing the knobs to turn back down so engine runs slow, drives me nuts is there any way to stop this from happening

 

[a70eliminator]

Re: Carb Knobs Needs Constant Attention

Have you tryed tightening the packing nuts.

 

[ryendube]

Re: Carb Knobs Needs Constant Attention

ya i have same problem. if its just the needles coming out then you need to tighten the outside sleeve that will crush the packing more or you need to replace the packing. My problem was the sleeves themselves were coming out. The threads on the carb wear so i just put a dab of automotive silicone (gas safe) on the top threads to make sure none went tinto carb and gum it up, adjusted the tension on the packing and away I went. Yes I know silicone any of that ****e is no good for carb but its either that or buying a new/used carb with good threads.

 

[ryendube]

Re: Carb Knobs Needs Constant Attention

oh ust to clarify i mean the threads on the outside sleeve no the needles themselves.

 

[57chris]

Re: Carb Knobs Needs Constant Attention

my '57 FD-11 did this today, replaced packing and tightened, works like new again.

 

[pillazilla]

Re: Carb Knobs Needs Constant Attention

thanks for the tips guys much appreciated, i should put up my completed gw invader project for the forum damn pictures are too big for the forums format so i will have to adjust all the sizes on them first, pain in the ***

 

[tmcalavy]

Re: Carb Knobs Needs Constant Attention

Most times, new packing washers do the trick...sometimes a replacement carb is needed when someone else cranked down too hard on the sleeves, ruining the threads in the carb casting.