ok i did it...

[airwarrior]

I pulled my carbs tore them down somewhat, following the service manual (73 Johnson 85 hp) and they show/mention a special tool (p/n 317002) for removing the high speed orifice plugs. They only show the handle sticking out of the carb so I dont know exactly what it looks like...

Do I need this or is there another way to get them out? Except for some gummy dark stuff, the floats are good and no corrosion and it looks like nobody had been previously digging in the carbs (no signs of damage or caveman mechanics at work). So I am headed to pick up the kits in the AM and while Im at the marina I wanted to know if I need to buy this tool.

Thanks! So far looks real simple... wish Holley's were this easy lol!

 

[tashasdaddy]

Re: ok i did it...

it's a special screw driver.

 

[airwarrior]

Re: ok i did it...

Thanks tash, but do I really need it to get the job done and is it one of those common things they are going to stock?

 

[imported_lorin]

Re: ok i did it...

Not using this special tool greatly increases the chances of breaking the little tabs off the plugs and leaving them impossible to get out without drill (not easy). But it is possible to remove them without it. Decide if you want to shoot the dice. Maybe you can borrow one.

 

[Walker]

Re: ok i did it...

I never take them out. I soak all the carbs I clean and after the rinse with aerosol carb cleaner I can see all the jets from one side. If they are sparkling clean then I have confidence that the back side that I can't see is clean also. Never failed for me.

 

[rickdb1boat]

Re: ok i did it...

I made my own. I ground down the sides of a larger screwdriver so it just fit into the hole the jet is in. Then I ground down the tip so it just fit in the slot of the jet. Worked like a champ...But I believe Walker is correct in that if you clean them well, you can get by without removing them...

 

[imported_lorin]

Re: ok i did it...

I think both of the above are correct-better to leave them in unless you absolutely have to remove them.

 

[airwarrior]

Re: ok i did it...

I soaked the carbs, rinsed them with deep creep spray cleaner and they look good. Actually the only thing that was really gummy/dirty was the bottom of the bowl and orifice tubes... everything else just looked like an old carb, no corrosion etc..

I picked up the kits, OMC parts, and they came with the floats, so I'll be putting new ones in, and for $28.33 each I can't complain. Atleast I don't have to wait on shipping!

Well I will leave them in, they looked clean and with my luck I screw them up lol! Now to get to work!

I did price a fuel pump, just incase, they want $53 and have it on the shelf.

 

[airwarrior]

Re: ok i did it...

hmmm... ok got it all back together, hooked up the fuel line, pumped bulb etc.... she still wont start, and I pulled the plugs and they are bone dry. So I am getting fuel to the carbs but thats it.

I am now headed back into the manual because something else must be wrong. I saw something about the distributor and the throttle or something..

 

[rickdb1boat]

Re: ok i did it...

There is a screen on the fuel pump where the fuel line connects to it. Make sure it is clean. Is your choke working properly? If the plugs are dry, it's a fuel problem. Not electrical...

 

[KYHunter2]

Re: ok i did it...

You never said if you checked to be sure the fuel pump is , ok.

If you did the link and sync. correctly, throttle shouldn't be an issue.

Ignition has nothing to do with getting fuel to the plugs.

The fuel pump operates off crankcase pressure.

If they are bone dry then , you have a fuel delivery problem.

Are you sure the floats are adjusted properly ?

I'd be sure to check the fuel pump, fuel lines , etc.

KYHunter

 

[KYHunter2]

Re: ok i did it...

Sorry Rick , your fast. LOL
What he said also .
KYHunter

 

[airwarrior]

Re: ok i did it...

Well I had this problem before I rebuilt the carbs, I assumed they were gummed up and fuel wasn't getting there.

I have pulled the filter and cleaned the screen, it wasn't dirty. I do have fuel in the carbs, when i pull the drain it trickles out so I am thinking I'm not getting enough fuel to them.... maybe there is a leak in the line, bad quick disconnet and air is getting in and letting the fuel drain back to the tank??

I know they have a new f/p sitting on the shelf, so once I rule out the hose and connections I can grab that!

 

[Walker]

Re: ok i did it...

A few thoughts. Your fuel pump may be bad but it wouldn't keep your motor from starting.
Your choke butterflies must close all the way for you to get any kind if fuel dump into the carb throats.
Pull the drain plugs on your carbs and that will tell you for sure if you're getting fuel to the bowls by pumping the bulb.
Seal the carb throats as best you can with your hand and have someone crank the engine. You should get gas on your hand and have visible gas in the carb throats.

 

[airwarrior]

Re: ok i did it...

I can close the choke butterflies with the electric or manual, still NO gas getting into engine. I pulled the plug on the carbs and gas came out. I know that every passage in the carbs is clear, as I was very thurough when I rinsed them with carb spray.

What I have found, is the fitting on the hose that attaches to the motor is kinda of sloppy. It doesn't leak fuel, but you can wiggle it, and I am wondering, or what I am thinking, if I am losing line pressure, wouldnt the system suck air and there not be enough pressure (especially if the fuel pump is weak/bad) to force the fuel through the carb? I know on a car engine with a carb, you are only talking about 5-8 PSI, what should an outboard have?

Need some ideas..... I guess. I am thinking of trying to locate the fitting on the engine and getting a short fuel line with bulb and trying that out. If I still dont get gas I am out of ideas lol!

 

[Walker]

Re: ok i did it...

The fuel pump actually has nothing to do with your problem. All it does is keep the carb bowls full of fuel. When you pumped the bulb up you manually pumped gas into the bowls. You motor should start on that gas.
Hold you hand over the carb throat and crank the motor. Do you feel it sucking?

 

[airwarrior]

Re: ok i did it...

Walker heh heh I am working by myself, a good six feet from the CC to the motor. Can ya jump om I-10 and come over??d I did find it in the service manual that the FP should put out 1 psi at 650 rpm...

So are you thinking that if there is NOT any sucking that maybe there is a compression issue or the vanes are stuck?