help carb settings

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ttavenieriii

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ok so i have a 1/5th scale truck. ot has a camafloes hummer body on it. someone told me its a off brand of the firehammer mt but most parts are swapable. ok so i just got it and started playing around with it road good bogged down a little so i started messing with carb now i cant get it to turn on. plugs clean motor is getting gas. it has compression. and its getting spark. i was hoping someone could help me with factory settings or something. once i can get it running again i can set it to my liking but with it not running i cant do anything someone please help thanks in advance for the help
 
Take your H and L needles and turn them in all the way (clockwise) and then turn them out the H should be 1-1/2 turns from closed and the L should be 1-1/4 from closed. Those are the factory settings.
When you get the motor started, let it warm up for a minute or 2 and then run in gently. If it sounds like it is going to die, then lean in the L needle a 1/16 of a turn at a time ( a little goes a long way). Remember after you lean it in run it up and down the street and turn off your motor and check the plug color to see what color it is. it should be a nice brown color. Too dark it's too rich and too light it's too lean.
Once you got the L needle to your optimal liking, you can do the H needle.

Hope this helps, good luck.


Chris
 
i give up. i got it running for like 4 seconds the dies and wont start up so i kept messing with the carbs and nothing. so i took the carb off and took some carb cleaner and cleaned the carb but still nothing. then i freind:dots: had the great idea to hook my impact to the motor to turn it over quicker to start it but it tighted the bolt under the pull cord thing and know after i loosened the bolt back up its making a grinding noise and its hard to pull.. ill never let that guy touch my car again:2guns:
but now i don't know what to do so someone help me please i need a step by step or a walk through to fix this. the hobby shop told me to bring it to them but the labor is 45 an hour and he said it would be about 3 hours work to completly tear down and rebuilt the car but i say forget that im a tech. for goodyear and im extremly mechanically inclined so i know i can do it my self with some help so someone help me please what should i do?
 
well the part that was overtightened will have to be removed now and shimmed (washers) back out so it doesn't run. hopefully nothing was squashed beyond use. either way it will have to come off now.

check the tank, open it up and make sure the clunk is down in the tank. sometimes they can get hung up on a high part of the tank and only get fuel when it touches. another sympton of this is having the gas lines reversed so it's trying to suck fuel through the return line.... which doesn't go to the bottom of the tank

if you have a vented tank check the lines. if it's a vented cap, loosen the cap off and start it and see if it stays running. vent might not be working and it'll need a vent line added to cap or tank. you should have a vented tank being an FH clone

if you have happened to land on your lid, you might have a slightly cracked plug. pick up an extra plug anyway, you will need it someday. even though a plug sparks, it might not spark enough.

check the magneto gap while the pull start is off. put the sensor over the long flat part, loosen the screws and stuff any business card between. set it like car points so it can move. tighten the screws.

reset carb to factory settings and prime the motor
 
An impact driver on a motor. Big no no. That might have messed something up.
Check what pipeous said about the gas tank and the carb settings like i told you.
Also, check around for any leaks in the gaskets and make sure all you bolts are nice and snug everywhere.

If you are going to take the motor apart it's not too hard. Do a google search on Zenoah motors exploded view, that would be a good reference.


Chris
 
this is the same truck as mine..

and I did the exact same thing... minus the impact driver? lmao, I was going to use a drill, but not on the bolt!!!

either way, I set mine as per peoples advice, and it wouldn't even fire still!

I'm now leaving it a few days, with the spark plug loose, and the piston at the bottom... hoping its just flooded badly, and will dry out and start!

its this vehicle, isn't it..

https://www.largescaleforums.com/showthread.php?t=6858

except it a light camouflage... :)

edit: oh, just saw your other thread... you need more than one?

its slightly different to mine.. mines an FS Racing "Insano"

pics of the actual vehicle? engine? etc?
 
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It is quite easy to flood these small engines until the carb settings are close. To unclog the motor remove the plug, flip the model upside down, pull the motor over about 15-20 times without the plug in. This will allow the extra gas in the lower end to come to the top and out the plug hole. I am sorta impatient and use an air compressor. NOt the best idea if the model is dirty. You don't want anything to get in the top end.
 
yes that is the same truck and i like the side skirts and the metal roll cage on that one that ,looks like a good upgrade to me but yes thats the same truck but in camo and impact gun a big no no i know but i was getting upset but it happens thanks for the exploded veiw page that will help me today looks like its time to tear it apart today befor turkey day dinner. any hints or tips i should do while i have it apart now? even if i have to order some parts i got it apart. what about boring the motor? anyways let me know if anything thanks guys and gals:helpsmilie:

TheyDontWantMusic said:
this is the same truck as mine..

and I did the exact same thing... minus the impact driver? lmao, I was going to use a drill, but not on the bolt!!!

either way, I set mine as per peoples advice, and it wouldn't even fire still!

I'm now leaving it a few days, with the spark plug loose, and the piston at the bottom... hoping its just flooded badly, and will dry out and start!

its this vehicle, isn't it..

https://www.largescaleforums.com/showthread.php?t=6858

except it a light camouflage... :)

edit: oh, just saw your other thread... you need more than one?

its slightly different to mine.. mines an FS Racing "Insano"

pics of the actual vehicle? engine? etc?
Click to expand...
 
just wind the L screw out 1.25 turns, and the H 1.5 turns, close the choke the whole way, and pull the cord 2 or 3 times, if it doesn't even try to start, then something else is wrong.

replace the plug!

mine had an intermittent fault!

if it fires on the 2-3 pulls, then open the choke about half way, and it should start on the next 3 or 4 pulls...

see my video in the other thread..
 
TheyDontWantMusic said:
just wind the L screw out 1.25 turns, and the H 1.5 turns, close the choke the whole way, and pull the cord 2 or 3 times, if it doesn't even try to start, then something else is wrong.

replace the plug!

mine had an intermittent fault!

if it fires on the 2-3 pulls, then open the choke about half way, and it should start on the next 3 or 4 pulls...

see my video in the other thread..
Click to expand...

please post a link to you vid thanks
 
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