I have cleaned all the jets 4 or 5 times and still having the same trouble. Very frustrating.

I would suggest that you check the accelerator pump on your carb. Remove the aircleaner so you can look down the throat of the carb then with your hand slowly press the accelerator to full open. You should see a good squirt of fuel going down the throat. If you do not see this the accelerator pump in the carb is broken. Good Luck

Brian, how many times have you removed the carb from the manifold? More than once then I would suggest you have an air leak via the paper gaskets that are on the bakelite spacers. If the car runs well when you put the towel on top, then I think you are getting the necessary air from under the carb base. I agree that if you are not gettring a solid stream when you activate the pump, than the tube is clogged or the daiphram is cracked. Cleaning the jets won't solve this problem as they are not in the accelerator circuit. When you remove the tube assembly for cleaning, be careful not to lose the 1/8" check ball at the bottom of the well. This may be stuck from varnish formation. If you need parts, let me know.

Thanks for the tips. Is there a way to check for air leaks on the gaskets? I have taken the carb from the manifold 1 time. The gasket looked in good shape. The accelerator pump does have a good steady squirt of fuel. It just not enough to keep the engine from accerating steady to higher speeds. It idles very nice but as soon as I give it gas it chokes like it need more gas. The tube assembly looked very clean and the ball was was moving freely and looked very clean. When you accelerate is the pump the only way it gets gas when you accelerate? I have rebuilt the carb and have been messing with it off and on for several months. At this point I think I need a miracle.

Brian, you say you cleaned all the jets. Good, but there are some passages in the bowl that can get gummed up also. Send me your email address and i will send you a copy of the page in the 190 manual that shows the path of the fuel throughout the carb. Do you agree Ron?

Exactly,i would say the fuel isn't flowing from the bowl once the throttle is open,and the idle circuit is bypassed.

< replied-to message removed by QT >

Thanks guys. boxboy_95693@yahoo.com

 Thanks for the pictures. I started by working on your second recommendation by cleaning it with carb cleaner and air. When I shot carb cleaner into the main jet holder I saw a steady stream of cleaner shot through the hole passages and fuel bowl. Then It shot air into the main jet and put it back together. Try to start and it idled fine but did the same thing choked down when I gave it gas. How is the tube attached? With the hat pin it will just straight out?



When the car is running I do not see any fuel coming from the hole passages. That seems like the problem. Thanks again Brian

I removed the tube and it was perfectly clean the ball was also clean. Put it back together and still have the same problem.

Edited by author 11-08-2009 05:17 PM
If you look at the diagram for the 180, you will see streams of droplets of fuel. Absent a good vacumn, caused by an air leak, your engine cannot pull in the fuel. So it sems we have come complte circle. After you have tightened the carb back the manifold, spray a light amount of starter fluid around the base. Should you have an air leak, the rpms will increase indicating that the base seal is leaking air. If you remember, you aaid it would run better if you choked off the air supply with a towel. Also check the casting for cracks. If you wish to call me, my number is 410-544-1255

With the car running a idle speed I shot some carb cleaner on the shock absorber side of the carb at the gasket that is for the carb cover. The engine increased speed. Is that part of my problem? This is a new gasket.

Squrit your fluid at the throttle shaft. If you get the same result you need new throttle shaft bushings. If that doesn't work, take the carb off again and put a little gasket sealer on the bakelite paper gasket to give you a good seal. You still have a vacumn problem.

Starter fluid? Like for starting charcoal?

NO===for starting cars in cold weather.

OK I got some starter fluid and sprayed it in the area you ask me to try. I did not get any type of speed changes. The gasket "rubber sleve" that goes on with the air intake silencer is damaged and there is a big gap. It does not fit corectly. Would that have an impact on the carb?

Have you verified the float level? Is your needle valve sticking? When the engine is idleing and you spray some starting fluid across the top of the oval opening, is there any difference in speed? I still suspect a leak somewhere. Peruse the diagrams again and double check all the gaskets and seals. A customer of mine had the same problem with his twin carb 220s and as soon as he changed the paper gaskets, the problem disappeared. Gently spray the starter fluid around the carb until you find the leak. Let us know your findings.