Johnson AD-10 carb.

[russ]

Tore this carb down soaked it for two days blew it all out with compressed air and put a new kit in.Put it back on motor got it started and adj.Ran good and smooth at idle.Shut it down for 5 minutes and went to restart and gas leaking out of carb throat.Float is adj level all new parts.Any thing I missed. Russ…

[crosbyman]

possible float snag due to  cheap chinesse gasket  warping

[russ]

I did notice that the new omc carb kit needle and seat does not fit like the old ones do .Put a new seat and needle valve in and put the float on and had to bend a long way to make it level.Removed it and put in one that was original along with needle valve and the needle valve went to the bottom of the seat.Put on a different float and did not have to adj it.Nice and level but but it is the one that leaks.

[Mumbles]

The old float valve is probably worn and that’s why it’s leaking.  Bending the float arm isn’t a big deal and you just gotta do what you gotta do to get it right.  If you set the float in line with the carb body, the fuel level in the bowl will be too high. There should be a bit of daylight between the float and the carb body, about the thickness of the bowl gasket.  Also don’t forget the new seal which goes under the seat. If it’s missing, there will be an internal leak  causing flooding and the float arm will have to be adjusted to compensate.

Was the fuel pouring out of the carbs throat or just pooled up in there?

[attachment file=”259808″]

[russ]

No it was leaking out the throat and down the front of the carb.Will pull it apart again and recheck.Thanks Mumbles…..

[russ]

Changed the needle seat and float. Starts run smokes and shakes.Start to adj high speed and motor revs up needle almost closed and then it stalls out. High speed needle may be at 1/4 of a turn out but will not stay running.

[crosbyman]

see causes on older style carb….yours is much like  it

 

packings OK ??   got the big donut  gasket installed at the bottom ?

• This reply was modified 2 years, 7 months ago by crosbyman.

[russ]

New packing and new donut.Could there be an issue other than the carb. Lots of pressure in the tank.

[crosbyman]

did you stop the leaking issue ???

LS  1.125 turn out      HS  .5 turn out    ???    warm it up  adj the HS   then  LS

 

• This reply was modified 2 years, 7 months ago by crosbyman.

[russ]

Yes the leak seems to have stopped. By the big donut do you mean the biggest one in the kit or the smaller brown one? I put the smaller one of the two on the nozzel.

[Author]

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