Ok, pulled the carbs and the thing still doesnt idle right.

[bobothewizard]

Ok guys, any more suggestions. Pulled both carbs off this weekend and they looked clean as a whistle. I have fixed the hard starting by replacing all the plugs and following the "Hard starting procedures" from tashasdad but now it will just not idle right.

It starts up with no problems but will only idle for a minute to a minute and a half and they just stop running. No coughing or sneezing, just completely stop. Any ideas on what i can check next to help this?

By the way, the carbs were really easy to pull off and clean. Thanks for the encouragement on this.

Thanks again for all the help, you guys are great!

 

[tashasdaddy]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

this is the 88spl, right, please remind us in your post. had to go back and look for it. did you remove the jets, and use new kits. does, pumping the fuel line bulb keep it running. are you using fast idle lever on control. have you tried choking it as it starts to die, did you set float level in the carbs.

 

[bobothewizard]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

Whoops im sorry bout that. It was a '93 90/65 jet. I used everything that came with the kit, set float level correctly. It was having this same problem before I took the carbs off. I was thinking that it was dirty carbs since the boat sat for 3 years before i got it.

The carbs looked great, clean bowls and no buildup. I do not have a chance to choke it since it dies without coughing or sneezing. As far as the bulb goes thats something that i am curious about. I can pump the bulb till its rock hard and once the engine dies it is not as rock hard as it was but it is still hard.

If i run it with the high idle slightly engaged it runs fine. It also runs full bore on the water just fine.


Another thing that is weird is you called it the 88spl. I was looking at fuel pumps and the 90 fuel pump doesnt look like what i have but the 88spl fuel pump does. I guess it actually is the 88spl because it does not have the VRO installed, even though it has what looks to be a fuel line coming up that has a bolt screwed into the top of it ...

 

[rickdb1boat]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

After it dies, pull the plugs and see what they look like. Let us know...Still sounds like the carbs could be clogged. Did you soak them and hit the passages with compressed air?

 

[tashasdaddy]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

some one remove the VRO pump and went with standard pump. i hope you are premixing you gas and oil 50/1. have you check spark when it dies, or does it just start right back up. it sure sounds like it's not getting gas thru the low speed jets. what the compression readings.

 

[bobothewizard]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

I did not soak them but i blew them out with compressed air. It starts right back up with the high idle "slightly" engaged. I do not have a compression gauge but i will see if i can borrow one from someone. And yes i am premixing 50:1.

One cool thing though is im learning a whole bunch about these types of motors and have a good time trying to get things right. I just need this motor to be as dependable as possible since next week my river tournaments start.

Where are the low speed jets on thie carb? I do not remember reading about those.

 

[tashasdaddy]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

are you using the johnson oem manual,

 

[bobothewizard]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

There is one other thing that is confusing me. I remember on my old motor cycle there use to be a idle control screw on the carb. These carbs do not have that or any way to adjust the idle? I have the aftermarket mechanic manual, i forget the name right off the top of my head.

 

[Walker]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

I did not soak them but i blew them out with compressed air.

No offence, but you just wasted your time rebuilding the carbs if all you did was blow them out with compressed air and put kits in them. The idle circuits have some very small passages that can easily clog.`They need to be soaked in a suitable carb cleaner.

 

[bobothewizard]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

I wasnt really sure about soaking them since they stated in the manual that i could not soak the bowls since they are not metal. I can pull the stuff back out, and soak them overnight, but i do not think i can soak the bowls.

What a better way to learn, pull em off and do it all over again. Its a great learning experience.

You think that would be the best way to go?

 

[tashasdaddy]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

you have PM

 

[ddennis]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

Not sure on yours,,but on mine there are no passages on the bowl, only the carb body itself. Make sure you soak them where there is plenty of ventilation...that carb cleaner will make ya loopy! LOL

 

[Walker]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

Go to an auto parts store and get a gallon of Berryman Chemtool Dip. Come in a gallon can with a lid and a parts basket. I've been using it for years and never damaged any plastic parts. It will ruin rubber parts like o-rings.

 

[bobothewizard]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

Well, got done tearing the carbs off again. I guess i should have pulled the idle jets off. There was a blocked idle jet in the top and one blocked in the lower carb. Cleaned them out and the unit is in the carb cleaner now. The only part i could not soak in the carb cleaner was the bowls since there a plastic material.

Im fairly sure the 2 blocked idle jets are what was causing my problem. They were blocked by a clear looking substance.

Keep your fingers crossed for when i have to put them back on tomorrow.

Tasha, thank you again for the email.

 

[rickdb1boat]

Re: Ok, pulled the carbs and the thing still doesnt idle right.

Good job....