Cleaning carbs project

My force 125 needs carbs cleaning. It seems that something is blocking fuel, it can not idle and this happened in 2 days it was getting worse and worse. Now I can start it only on high throtle on idle. When I reduce throttle it dies . I checked spark, works on all 4 cylinders. I checked fuel diaphragm, I will change this also but it looks good. Anyway I was planing a carbs cleaning so please point me some important things for which I should be carefull when disasembling carbs. I am planing to unscrew it from motor and then everything is adventure for me. So if there is some topic where this was before explained please write me . I searched some videos on youtube and there are instructions for carb cleaning but not for force . Is it good to wash carb in a diesel fuel or some other liquid is better? Thank you for help.

p.s. I am also suspecting in water in the fuel but this is less likely, first I would like to clean carbs.

Re: Cleaning carbs project

Before cleaning carbs you should do a compression test on all 4 cylinders. I have a 125 force outboard also and did the exact same as your. Lost compression on #2 and #4 had bad scoring on cylinder wall. Funny though #4 still had good compression. There were other things but we don't need to get into that. Always compression first.

Re: Cleaning carbs project

Compression is good, 130-135 on all cylinders

Re: Cleaning carbs project

Using gas or diesel fuel to clean.No! You have gas going through them all the time and it just gums them up.
Use a carb cleaner. Check for water.
First post has a post by FrankA called a linc and sinc.Do this after you clean.
It's a simple carb.Not hard to do.J

Re: Cleaning carbs project

for cleaning aluminium like new soak in Celulose thinners..blow all out with compressed air

Re: Cleaning carbs project

If you suspect a partial blockage in the carb passages, try this.... when it's running steady.. "blip" your choke on for a split second, it will dog out, and maybe die on you. Restart, get it back to a smooth high idle, try it again.. just a quick blip. This will create a super-vacuum that just might pull any crap through a clogged passage. If all of a sudden, after letting the engine clear out, it runs good and normal, you may have found the problem.. dirt.

Bob

Re: Cleaning carbs project

blonde goes into a garage with a misfire on her car ...shiit in the carburetter says the mechanic ....blonde says how often ...got it ...

Re: Cleaning carbs project

I found the problem. I opened the fuel filter and disconnected fuel line. Started motor and it worked fine for 2 minutes till it burned all the fuel that was in the system and then died. After that I connected fuel line and fuel pump again ( it says "filter" on it ) and started motor again and it works good now . It seems that pressure from electric pump flooded one of the carbs. In the mean time I messed with all screws, idle screw, timing screw, idle mixture screw. Now I have to tune it all up . So I gave up from cleaning carbs at the moment but I will have to do it in close future.

Tomorow I am going to try to tune it all good. I noticed that motor starts easily in idle when idle mixture screws are 1 turn out or even less . Also, when set this way when I put in gear it doesn't die and before it did die if I didn't add more throttle momentaly . I learned from earlier posts that it is dangerous to have less that 1 1/4 turn out, but motor works good in idle and has big strength when it is 1 turn out or less .

Re: Cleaning carbs project

Today I set timing, I set it with timing light on full throttle on the sea. I also set the idle mixture screw and I am not sure now did I understand right the sticky post.
It says there that you need to turn the screw 1 turn, I suppose 360 . But when I turn it 360 degrees idle is weak and it dies when I put in gear . When I turn screw 180 degrees idle is great and strong, it works on 750 -800 rpm in idle in gear ( I installed tiny tach ) . So is it in sticky 360 or 180 degrees ?

Needles look great .

The other thing is that when on 750-800 rpm my lower carb misses every few seconds and on right side it spits fuel through the small hole . This newer happens on upper carb . Do I need to turn idle screw on lower carb clockwise or other direction to stop it spitting fuel ? When I add throttle spitting stops . What could be the reason of this ? Do I need to change anything with the float in carb ?

Re: Cleaning carbs project

Sounds like you been to do a float adjustment and check for proper needle seat in the carbs. If there is any crud at needle seat position then fuel will be able to flow through. I noticed compression is good and im very happy for you all is well there. If float is unable to close needle valve then its a simple adjustment and worth the time to do it.