92 rude 9.9 carb question

[xikxak]

Just rebuilt carb.idle tube goes fromnozzel well to fitting on carb body. fitting on carb body is blocked.I could not get a drill bit thru it(not spinning)is this supposed to be.engine runs good at idle but will not speed up,but I beleive that problem is from a crack in the top carb body cover.Just want to know about the idle tube.should it be drilled out or left as is?Thanks much. dave(I dont understand why there would be a tube to a closed fitting.

 

[OBJ]

Re: 92 rude 9.9 carb question

That hole needs to be open Dave. And the top cover needs replaced if it's cracked. Replacement kit is PN 433973. About $25 at the local John/Rude dealer.<br /><br />I usually use a small wire or tip cleaner to poke out the idle tube holes. You may have not used a small enough drill to poke through the hole. <br /><br />But it's puzzling that the engine runs good at idle. If the hole was plugged up, it shouldn't run at idle. <br /><br />Are ya' sure the cam follower roller and cam are adjusted right?

 

[xikxak]

Re: 92 rude 9.9 carb question

I used a drill bit a lot smaller then the tube.I,m totally confused why it idles so good.Yes the cam follower and cam are right. thanks,dave

 

[OBJ]

Re: 92 rude 9.9 carb question

Me again Dave....just following up. You need to use a drill bit or wire that is smaller that the hole from the top side of the carb....under the black cover.<br /><br />Just a question, when you throttle down to idle, is the reference mark on the cam going past the roller toward the starboard side of the engine letting the throttle plate close?