throttling problem

[ezeke]

Re: throttling problem

.....there is that little red switch that is on the right side of the motor. right now i have it pointed forward. how i understand is that the red switch is for priming with pull starting. could this switch be a problem?

Did you resolve this issue by setting the "red switch" in line with the cylindrical part of the primer solenoid? If not, you should.

 

[mucduc]

Re: throttling problem

yeah the red switch has been in that position. but before when i was messing with it i was trying both positions trying to get it to work.

 

[mucduc]

Re: throttling problem

so far i have taken apart the carbs again and have found 2 problems, both having to do with the bottom carb. the bowl gasket was not seated correctly, and when i took the carb off and turned it upside down and blew into it i was moving air. i flipped it over a few times til it would stop the air. i just dont know if that was the original problem because i had the carb off yesterday.

 

[tashasdaddy]

Re: throttling problem

remove the high speed jets and clean them. if not you are wasting your and our time. the carb float should be parallel with the edge of the carb bowl. before putting back on. do the blow test, if upside down, you can blow air, the needle is not seating. right side up you should be able to blow air. also flush fuel lines, by pumping the bulb before reconnecting, and use gas line zip ties or hose clamps on fuel lines.

 

[mucduc]

Re: throttling problem

i ordered the 2 carb kits today. im waiting for my girlfriend to bring me a screw driver now so that i can modify it. i will be soaking all the parts over night tonight. hopefully by monday afternoon it will be in the water and i will be testing it in water. the top carb pass the blow test. the bottom was sticky. i didnt see in the carb kits that they come with new jets. do the kits usually come with new jets? thank you everyone for yalls help.

1 more thing that i found that may be an issue. the top cylinder has good compression but the bottom cylinder has a very slow leak. one a car it would just make it run bad. would this be the problem?

 

[bktheking]

Re: throttling problem

i ordered the 2 carb kits today. im waiting for my girlfriend to bring me a screw driver now so that i can modify it. i will be soaking all the parts over night tonight. hopefully by monday afternoon it will be in the water and i will be testing it in water. the top carb pass the blow test. the bottom was sticky. i didnt see in the carb kits that they come with new jets. do the kits usually come with new jets? thank you everyone for yalls help.

1 more thing that i found that may be an issue. the top cylinder has good compression but the bottom cylinder has a very slow leak. one a car it would just make it run bad. would this be the problem?

A leaking cylinder will make it run like shiite, head removal is the next order of business after carbs are rebuilt.

 

[tashasdaddy]

Re: throttling problem

you remove clean and reinstall the jets.

what exactly are your compression readings. i think you just found your major problem.

 

[mucduc]

Re: throttling problem

top cylinder is 100 and stays there. the bottom cylinder hits about 105 to 110 then slowly leaks down to 80-85. im really hoping that isnt the problem. i havent done a wet test yet.

 

[ezeke]

Re: throttling problem

top cylinder is 100 and stays there. the bottom cylinder hits about 105 to 110 then slowly leaks down to 80-85. im really hoping that isnt the problem. i havent done a wet test yet.

Leak down is not the same as a compression test. Use a compression test kit with all plugs removed.

 

[mucduc]

Re: throttling problem

so what would make it leak down? i didnt have both spark plugs out. i was using a compression gauge. what else is there in the comp test kit?

 

[mucduc]

Re: throttling problem

oh yeah and another thing, when i was checking the spark plugs yesterday i forgot to put the wire on the top cylinder that had 100 compression and it still ran off the bottom cylinder for about 10 secs. 10 secs was about all it would run to begin with on both cylinders until i cleaned the carbs. then it ran great at idle after i cleaned them.

 

[tashasdaddy]

Re: throttling problem

compression test>>>>http://forums.iboats.com/showthread.php?t=313963&highlight=compression

 

[mucduc]

Re: throttling problem

i read that earlier, i pretty much read all the posts about fuel, starting, and motor stuff in the top secret file. ezeke said something about a kit, thats what i was wonder what else was included in a kit. saturday when i get to the house i will recheck the compression with both plugs out this time

 

[Lone Duck]

Re: throttling problem

from what i have been reading and what yall have been saying about adjusting the carbs while in the water im pretty sure you mean that once its in the water put in foward gear and increase speed then stop and adjust then keep doing that process as you would in a car. but the problem i have is that i dont have any lakes around that i can put in. only rivers, which i have floated down before cause i couldnt get the boat started again. my question is what is the likely hood of the boat stalling before i have a chance to get back to the dock or shore to readjust the jets. should i over set the jets with the muffs on just to make sure the backpressure of the water doesnt send me down the river?

should this be in another thread?

Back into the river and leave the boat on the trailer till you get it running. We don't want you to float off down the river before we fix the problem.

 

[ezeke]

Re: throttling problem

i read that earlier, i pretty much read all the posts about fuel, starting, and motor stuff in the top secret file. ezeke said something about a kit, thats what i was wonder what else was included in a kit. saturday when i get to the house i will recheck the compression with both plugs out this time

A compression gauge holds the highest reading until you manually release it. There should not be any release of pressure on the gauge until that point.

Leak down tests are more difficult with 2 strokes because of the porting; you have to hold the piston firmly at the point where the rings are well above both sets of ports and do it uniformly for each piston.

 

[mucduc]

Re: throttling problem

ohhhhh. now im getting it. so then there is probably something wrong with the gauge either dirty, or worn o-rings to make the gauge lose pressure.

and i have found another peice of the puzzle. the top carb float was installed upside down. so the float just swing all the way down to the bottom of the bowl. the bottom float was good.

 

[mucduc]

Re: throttling problem

ok now after going back thru the carb cleaning in the top secret i was looking at the link that has the 61 pictures of the carbs and now i dont know which way the float is supposed to be install. in the pictures it shows the little tab where the pin goes thru to float to be pointing down(away from the carb). but on my carbs the top had the tab pointing away, and on the bottom the tab pointed up( towards the carb). so i dont know now

 

[mucduc]

Re: throttling problem

ok and another thing that i found that im going to say is the biggest problem that i found. whenever i moved the float on the bottom float there would be a fairly loud click like it was sticking to the seat. the top carbs needle valve would move up and down nice and smooth with absolutly no clicking. the click is the sound of metal hitting metal. so i think its the needle valve spring being stretched til the needle valve breaks loose from the seat and the strikes the float. i hope the rebuild kit will fix all this.

 

[patrick4266]

Re: throttling problem

where does a person get these gas line zip ties? I need some myself.

 

[ezeke]

Re: throttling problem

where does a person get these gas line zip ties? I need some myself.

If you use them you will want to be sure and use the ones that are designed for that purpose and have a curved (ramped) face; OEM part # 0320107. They come 100 to a package at .20/each list.