[91INDY650]

i bought a indy 400 like an 85 or 84 for 40 bucks. need work.

any way on the motor side of the carbs on the float bowls there is a hole in each one. and when i go to start it the gas drains out of there soon as it reaches the carbs.

any suggestions on what them hole are and how to fix it

 

[stormrider62033]

need's new needles and seat's ,dennis kirk has them for like 17 dollar's each

 

[indy_guy]

i think your talking about the holes for the tubes to catch sediments that enter your carbs?

 

[SKSPolarisIndy]

Do you mean your sediment collecting tube at the bottom of the float bown in the middle? If so, without the cap or the collection line, you'll lose fuel.

 

[Garceau]

Yep its the sediment traps, drains what ever you want to call them.

You need to put a gas hose with a plug in the bottom of it on each carb. What this does is catch particles heavier than gas in the floats.

You wont EVER keep the floats full with out them on there.

 

[91INDY650]

do any ya guy now where i can get the cap part to conect the hoses

 

[Zrxpilot]

Sounds like your a little green to sled wrenching. Its time to get your feet wet.

Find the valve to shut off the fuel. The remainder of this does not have to be in this order but take mental notes or mark with tape or take pictures of how things are so you can put it back like it was.

Pull the plug wires and get them out of the way. Unskrew the top of the carb and lift out whatever comes out and lay them to the side. Disconnect the fuel lines, and do whatever you have to do to remove the airbox. Trace the choke cable to the carb and simply take a wrench and unskrew the choke cables and lift them out. unplug any really small vent lines and move them out of the way. Unskrew the big hose clamps on the carbs and take them out.

Now you have to make a choice. Open up the carbs and jump in or take to a shop for cleaning. You can now inspect externally and replace whats obviously damaged/worn out and put things back as they were and hope for the best. Its my reccomendation to jump in the carbs and learn for yourself. You really cant skrew this up so bad a mechanic cant fix it worse than it probably allready is.

If you choose to go further, hit the search button and look for "cleaning carbs" . If your lucky, this operation will only cost you an hour or two and 1 big can of carb cleaner. Its really a piece of cake if you do a little research ahead of time. All of us have been where you are at one time or another be it carbs or some other problem. Knowledge comes from books, experience comes from skrewing things up. If you choose to dig in your carbs and your having trouble, feel free to PM me and I will get back to you as soon as I can or walk you thru it on the phone.

 

[KHE]

I have the same sled, and have had the carbs apart a bunch of times... I can post some diagrams from my manual...

 

[91INDY650]

this isnt my first time working on motors. i work them quite abit im just not a carb guy. never had played with them much. i guess i gota find a place to find the colecter tubes and them "caps".

if u could post them diagram i would like it much ty for info everyone

 

[Garceau]

Take some gas line, and put a bolt in the end of it with a clamp on it. It may not be pretty but you will find out soon enough if thats your problem.

There is nothing hard about going into the carbs, uncsrew the cap, pull carb off. Take off floats clean the snot out of them. M ake sure the floats move on the pins easily. Turn the idle speed screw in (its the bigger one) count the turns, right it down. Now pull the idle mixture screw (small one next to idle speed) and do the same thing and right it down. Now take the pin out to remove the needle and seat, clean them off. I like to soak my parts for the while Im going through all this. Now the main jet, and the pilot jet. Put them in cleaning solution and have a beer. It usually takes me 5-7 minutes to drink a beer and thats enough time to soak them. If you think they need more, have another (warning if you have three carbs you must pace yourself) take special time with the pilot jet. Clean that better than anything, spend time on it, carb cleaner and a piece of brass wire strand work awesome, blow it out. Put back together and attempt next carb.

Note: when you take the carb cap off, dotn mess with that too much you will screw up the synchronization.

Believe me until 3 weeks ago I mess with mechanical injection on my race cars, and big cubic inch car motors (632 inches) with carbs and never got into one of these little things. If only all things in life were this simple.

 

[91INDY650]

lol

 

[91INDY650]

Originally posted by Garceau
[br]Yep its the sediment traps, drains what ever you want to call them.

You need to put a gas hose with a plug in the bottom of it on each carb. What this does is catch particles heavier than gas in the floats.

You wont EVER keep the floats full with out them on there.

can i just plug the holes for a little to see if it will even run. then buy the woses

 

[Garceau]

I dont see why not.