setting idle speed screw

[solman989]

Here goes another question: Does the idle speed screw have to be adjusted every time the car is run? Even when my car is running fine, if I turn it off and try to restart it I have to speed up the idle for it to start. Also, I'm setting the idle so that the wheels barely turn when the car is OFF the ground so I dont melt the clutch. Is this right? Because I could have the wheels spin a little bit with the car on a box and then place the car on the ground and it still wont move. Which way is correct?

 

[Error401]

Use the trim on the radio. Bump up the throttle trim before you start it, then once it's running, back the trim down. I wouldn't keep adjusting the screw on the carb though.

The slower you can get your engine to idle, the better. Just be sure that when you punch it, it doesn't stall. Having the wheels turn when you hold it up means that the clutch it slightly engaged, and thus is wearing it (not by much). But if that's a slow as you can get the engine, then that's where it'll have to be.

 

[solman989]

thanks for the reply error401. That seems to work much better than adjusting the screw all the time, but is pretty inconvenient nonetheless. Do all of you have to do this also?

 

[Domination]

nope my maxx starts right up then idles fine

 

[Error401]

Originally posted by solman989
thanks for the reply error401. That seems to work much better than adjusting the screw all the time, but is pretty inconvenient nonetheless. Do all of you have to do this also?

Not all the time. Usually on the first run, or if it's a little flooded. Most of the time if it's tuned right it'll just fire up.

 

[solman989]

I tried starting up the T15 in my RS4 today and no go. I had left it on previous settings when it was run a couple days ago. My engine is new, only ran about 5 tanks so far but it almost always takes at least 10 minutes to start it up the first time-even if the settings are correct from a previous run! Since the screws are supposedly correct, I end up spending 10 minutes fine tuning the settings back and forth by trial and error until it fires.
Also, if it doesn't start up when I turn it over, is there any point in trying again BEFORE changing a setting? I'm using a roto starter, and giving it a short <1sec burst. If no go, I adjust something and repeat the process.

 

[solman989]

Just wondering, what is the average time you rotostart users leave the rotostart spinning in the engine? I'm using one-second bursts because I'm afraid leaving it in there longer will damage the starter. If you think abuot it, on a pullstart it only takes <1sec to complete one pull.