1993 60hp Fuel coming out of carbs

[HybridMX6]

Hello. I finally got the hoses all done and got this project to the "ready to start" phase. I pumped the primer ball, pushed the key in, and then turned it (I didn't hold the key in). Motor tries to start then dies. I searched and found some info about to squirt premix in the carbs and see if it starts. Well, mine did, then dies once it burns up the fuel. I rebuilt this motor, and all 3 carbs, and there even seems to be fuel coming out of the carb itself. It was coming out the butterflies even before I sprayed premix in there, and also seems to be coming out of the bowl gasket. So, what did I do wrong when rebuilding the carbs? I must have done something wrong, so any help is appreciated. I took them apart 1 at a time and replaced the gaskets, float, needle, whatever come in a rebuild kit, so I must have done something wrong. I could be doing something wrong and not knowing it. This motor was a project when I bought it, and someone had been messing with it before me, so if they did something and put it back together wrong I probably repeated it. I do have the factory manual for the motor, and rebuilt the carbs as outlined in the manual (well, apparently not).

 

[Barnacle_Bill]

Re: 1993 60hp Fuel coming out of carbs

Did you set the floats?

 

[HybridMX6]

Re: 1993 60hp Fuel coming out of carbs

I did the best I could as far as I know. I don't have their special tool they say to use, but I turned the carb upside down and checked the level and made sure it was even with the carb body when inverted. Is there a better way of checking that or did I just do it wrong? I've read dozens of posts here about carb rebuilds since I joined in October, but I am a much better hands-on learner than I am at reading something and then doing it.

 

[HybridMX6]

Re: 1993 60hp Fuel coming out of carbs

Anyone have any other input or suggestions on what I did wrong? I don't want to take them all apart again and repeat my mistake, so I'm waiting on some more feedback. Any input is appreciated.

 

[joho5]

Re: 1993 60hp Fuel coming out of carbs

if there is gas coming in between the bowl gasket, either you didnt tighten it down enough for a seal, or either the carb body, or the bowl is warped for some reason.

It could be dirty I guess in between the two where the gasket goes, but with a new gasket and tightened down, there shouldnt be any gas leaking through the gasket.

as far as coming out of the carbs, is it a continuous thing, or something you just noticed? that sounds like a float / neddle valve / seat problem.

 

[HybridMX6]

Re: 1993 60hp Fuel coming out of carbs

It only comes out when I pump the bulb or use the primer. It doesn't do it all the time on it's own. I haven't got the motor to run long enough to see if it happens when it's running or not.

 

[tashasdaddy]

Re: 1993 60hp Fuel coming out of carbs

read this: http://forums.iboats.com/showthread.php?t=244013
when i install floats, turn the carb up side down, now adjust the carb, so that there is just a little more space on the loose side, than the hinged side. this asures the needle closes. did you replace all the gaskets, tighten all the screws. now that the carb is together, attach a piece of hose the the carb, and blow into it. right side up, no air should pass, upside down you should be able to blow fairly easily. this shows that the float needle is sealing.

 

[HybridMX6]

Re: 1993 60hp Fuel coming out of carbs

Thanks for the hints and suggestions. I'll pull them all off again when the weather permits and take a look at them. I'm pretty sure I tightened down all the screws, but will also double check that while I'm at it. Will I need new gaskets again for the bowls or anywhere else?

 

[tashasdaddy]

Re: 1993 60hp Fuel coming out of carbs

if they are not pinched or damaged, you should be good to go.

 

[HybridMX6]

Re: 1993 60hp Fuel coming out of carbs

Ok, thanks.
On a side note, and since I've already found other things that the previous owner did that were wrong, does anyone have a diagram of how the fuel system should be laid out once it comes in the motor? The previous owner removed the VRO, but I have no idea if he hooked it all back up the right way or not, and I just followed how it was done when I took it all apart. I'd like to be sure I have it all routed the correct way also.

 

[tashasdaddy]

Re: 1993 60hp Fuel coming out of carbs

wich pump did you use to did he use? 2 line or 3 line, does it have part label still on it?

 

[HybridMX6]

Re: 1993 60hp Fuel coming out of carbs

It appears to be a 3 line. I have it currently hooked up with the fuel in the front, and back out on one side, and a crankcase line also from the pump to the crankcase. It's obviously getting gas, since it's pouring out all over the carbs, LoL. I had a pic of it on here at one time, let me see if I can go find it and post it in here. It wasn't the best, but it did show it at least.

Edit, here it is: Like I said, not the best, but it's all I got of it and I'm at work, so I can't do much for a better pic right now:

 

[HybridMX6]

Re: 1993 60hp Fuel coming out of carbs

Well, I finally got a break in the weather and didn't have jigs to make today, so I got the carbs off. I checked the tightness of the bowl screws, and they were all pretty tight, but most moved maybe 1/8 turn, so maybe that was it. I also did the "blow-thru" test on them and all was good there. So, I put them back on, zip-tied all the hoses very well (I had a few leakers last time, so wanted to make sure this time), and tried to start her up. Same as before really, had to use the primer to get it to start. So, I adjusted the shift cable some to adjust the idle, and also adjusted the idle screws on the carbs, and got her going. With some tweaking, I got it to idle at what sounds like a nice idle for being on muffs. Ended up with my idle screws turned out 2.25 turns instead of the 1.5 suggested for a starting spot. Turn the key and all is good, it'll idle forever it seems.
I did run across another question though. In the huge pic above in my previous post (sorry for the size, but now it's useful), there is a hose coming off the intake manifold below where the carbs would be. For some reason, I can't find the hose I took off, and thus no label of what that was supposed to go to. Can someone please tell me what that is and where it's supposed to go? Right now there is no hose or anything attached to it, and it's bothering me.

 

[HybridMX6]

Re: 1993 60hp Fuel coming out of carbs

Bump for my question at the bottom of the last post above.