Help Me!!!!

[Oza_X]

Right,

I need your help to diagnose a problem and tell me if the LHS I just spoke to is right. I've tried to follow closely what is written in the manual...

Facts:

1) I can start the truck, however when I do the wheels spin. Probably too high a idle, right? Well if a 180 deg turn of the idle screw isn't sufficient to get it to stop the wheels, turn it further?

2) I noticed the last few times I've ran the car that it cuts out under breaking. Since i've found the only way to get the wheels to stop turning (see above) is to use the trim on the controller to reduce the throttle.
I expect this to be the problem.

However the deal is thinking I might of broken the engine, and told me to be able to check this I'd need to take the engine and apart and see if the pistion was able to full reach the top of the cylinder........ :sick:

Any advice would be greatly appreciated.......

 

[olds97_lss]

If you hit the brakes and your engine dies, then your trim is off at idle. When the trigger is at nuetral, the linkage should be pushing your carb closed. Then you use the idle adjust screw to keep it open a bit so it will stay running.

Why do you think the engine is broken?

 

[Candyman]

I highly doubt the engine is broken.
With the car cutting out under braking, it's most likely that the idle screw is too far out. That causes the carb to close completely when you hit the brakes and kills the engine.
Here's what you need to do. First, set your throttle trim on the transmitter to the middle. Then remove the air filter from the engine. Turn on the radio and the truck. Don't start the engine. Now hit the brakes. Look into the carb opening. With full brake on, there still should be about a 1mm opening visible in the carb barrel. If it's any smaller, let off the brakes and turn the idle screw in 1 turn. Then try it again. Keep doing this until there's still a visible opening in the carb barrel under braking. That will ensure the engine will stay running when you hit the brakes.
Now, once that's done, you can then adjust the idle when it's running. Start the engine and let it warm up. Run it around for a minute or 2. Then hit and hold the brakes. If it sounds like it's idling too high, turn the idle out just a touch. Keep turning the idle screw out until you feel it's at a good idle. This would be when the engine will stay running while the brakes are on, but not so high that that the truck starts to roll if you let off the brakes.
And one other thing. When you let off the brakes, there shouldn't be much change in idle. If the engine starts to increase revs when you return the throttle trigger to neutral, your idle trim on the tx is too high. Reduce your trim until it gets back to regular idle, but make sure you don't adjust it so far that you actually have some brake engaged when you let go...

Hope that helps.

 

[bentover]

Or a clutch shoe is dragging.

 

[Oza_X]

Right, after 1.5 turns (full) clockwise i've not got the gap you mention... So I expect the break problem to be a good way to being resolved. However I'm still not sure how to resolve the wheels turning at idle when I fire the engine up..... ???

 

[joneser4u]

You need to adjust the slide stop screw,so when you hit the brakes it doesn't close off all air into the engine,as for the fast idle,use the trim on the radio and the screw adjustment on the linkage,the part that snaps on the carb is adjustable.

 

[Rolex]

You need to MECHANICALLY set your idle screw without the trim being raised.
You need it to idle properly with the trim completely down. It sounds like you are trying to set the idle with the trim up, that's why it kills when you hit the brakes.
One the idle is set mechanically, you can raise it with the trim for warming up, or idling just short of clutch engaging.

 

[Oza_X]

rolex... I still have the stock transmitter.. now I assume that you mean trim up, to be with the point going up? And the trim down with the point facing to the left?

Pls confirm so I understand exactly what u mean.... I set it just now with the trims on the controller as the manual requires you.....

 

[rdt45]

If your talking about the wheels turning when the truck is off the ground that's normal as long as it does not move when it's on the ground.

 

[Oza_X]

weee Finally an answer to my query.. thanks rdt... problem I have is in my manual it says that them turning is bad.. hence me asking.....

 

[rossb]

The first thing you need to do is to adjust the mechanical idle screw on the carb, you can do this with your receiver off, push the servo arm so that the linkage causes the carb slide to sit on the idle screw with the receiver off and then adjust for a good idle with the engine warm and clear of fuel. Your idle may drop as the motor “loads up” at idle.

Hitting the brakes should not cause the idle to close down anymore than the radio’s neutral position. Adjust your linkage and trims so that neutral on the radio causes the slide to sit against the idle screw in the carb. The carb slide should start to move off idle as soon as you start to move the throttle on the radio. In addition, the slide should reach it’s maximum opening just as you reach wide open on the radio. You want the most "throw" on the radio as possible; this will give you good throttle control.

 

[rdt45]

Oza X, you're welcome. Check it on a level surface like concrete or blacktop. It should sit still while ideling. If it is trying to move foward, even just a little, trun the idle down. You don't want the clutch shoes to engage while it's sitting still........