16hp vanguard not idling well

Intrnlstorm · 06-06-2016, 07:40 PM

So I finally got my exhaust welded up and now I can't get the engine to idle well. It starts but won't idle.

I have the Rev kit in it and the valves adjusted. Governor is bypassed and throttle I straight to the carb.

I have the Equus 8068 and I think I have it set up right. If I do it idles at 2000 and then when it drops below 1500 it dies.

Took apart the Carb to clean.

Got rid of the fuel filter in line.

Plugs look good.

Fuel pump is getting pulse off of valve cover.

Any other ideas?

Also, what is this black screw for. I think it's a idle screw but it doesn't seem to do anything.

Joel

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Dave in VA · 06-06-2016, 07:47 PM

The black limiting cap can be removed from the screw for more adjustment.

Kustrud · 06-06-2016, 09:54 PM

Is the carb bowl vent plugged?? If so, that could be your problem. Needs to be open to the air. That black capped screw is your air/fuel mixture.

Xtsix · 07-26-2016, 06:30 PM

The Phillips screw on the left of the carb in the picture is the idle speed adjustment screw, the screw with the tamper proof tab is the low speed mixture adjustment. These engines are Gerry sensitive to exhaust changes, try screwing the idle screw in untill the engine will idle, then pull the cap off the screw with a pair of needle nose pliers, and adjust your mixture. I recommend removing your drive belt as your idle could get quite high While adjusting the carb

BigBlockMan · 07-27-2016, 08:50 AM

If you did not remove the limiting cap and the adjusting needle, Then you didn't get the carb all the way clean yet. BE VERY CAREFUL, THE NEEDLE IS VERY EASY TO BREAK WHEN REMOVING LIMITER!!!

Intrnlstorm · 07-29-2016, 01:02 PM

I have it working pretty good but now I can't get it to run over 4K rpm? It pulls strong but tops out at the 4K. I have the rev kit installed and should get to 5500? Fuel problem? Should I just rebuild the carb? New fuel pump? Ideas?

Joel

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pleighdammet · 07-29-2016, 02:47 PM

with stock carb my engine wouldnt run over 5k (HS rear gears and 23" tires, it just wouldnt pull it) with the 2 barrel carb change it will pull to 6 if it would hold together

06-06-2016, 07:40 PM	#1
Intrnlstorm Not Yet Wild Join Date: Dec 2014 Location: Schenectady, NY Posts: 53	16hp vanguard not idling well So I finally got my exhaust welded up and now I can't get the engine to idle well. It starts but won't idle. I have the Rev kit in it and the valves adjusted. Governor is bypassed and throttle I straight to the carb. I have the Equus 8068 and I think I have it set up right. If I do it idles at 2000 and then when it drops below 1500 it dies. Took apart the Carb to clean. Got rid of the fuel filter in line. Plugs look good. Fuel pump is getting pulse off of valve cover. Any other ideas? Also, what is this black screw for. I think it's a idle screw but it doesn't seem to do anything. Joel Sent from my iPhone using Tapatalk

06-06-2016, 07:47 PM	#2
Dave in VA maintaining a low profile Join Date: Oct 2009 Location: SW Virginia USA Posts: 6,316	Re: 16hp vanguard not idling well The black limiting cap can be removed from the screw for more adjustment.

06-06-2016, 09:54 PM	#3
Kustrud Gone Wild Join Date: Sep 2015 Posts: 282	Re: 16hp vanguard not idling well Is the carb bowl vent plugged?? If so, that could be your problem. Needs to be open to the air. That black capped screw is your air/fuel mixture.
Kustrud Gone Wild Join Date: Sep 2015 Posts: 282

07-26-2016, 06:30 PM	#4
Xtsix Not Yet Wild Join Date: Aug 2014 Posts: 14	Re: 16hp vanguard not idling well The Phillips screw on the left of the carb in the picture is the idle speed adjustment screw, the screw with the tamper proof tab is the low speed mixture adjustment. These engines are Gerry sensitive to exhaust changes, try screwing the idle screw in untill the engine will idle, then pull the cap off the screw with a pair of needle nose pliers, and adjust your mixture. I recommend removing your drive belt as your idle could get quite high While adjusting the carb
Xtsix Not Yet Wild Join Date: Aug 2014 Posts: 14

07-27-2016, 08:50 AM	#5
BigBlockMan Gone Wild Join Date: Feb 2007 Location: Southwest Georgia Posts: 1,469	Re: 16hp vanguard not idling well If you did not remove the limiting cap and the adjusting needle, Then you didn't get the carb all the way clean yet. BE VERY CAREFUL, THE NEEDLE IS VERY EASY TO BREAK WHEN REMOVING LIMITER!!!

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07-29-2016, 01:02 PM	#6
Intrnlstorm Not Yet Wild Join Date: Dec 2014 Location: Schenectady, NY Posts: 53	I have it working pretty good but now I can't get it to run over 4K rpm? It pulls strong but tops out at the 4K. I have the rev kit installed and should get to 5500? Fuel problem? Should I just rebuild the carb? New fuel pump? Ideas? Joel Sent from my iPhone using Tapatalk

07-29-2016, 02:47 PM	#7
pleighdammet Professional jerry rigger Join Date: May 2012 Location: illinois Posts: 337	Re: 16hp vanguard not idling well with stock carb my engine wouldnt run over 5k (HS rear gears and 23" tires, it just wouldnt pull it) with the 2 barrel carb change it will pull to 6 if it would hold together

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