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High idle with brake on throttle back

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Old 02-09-2008, 07:54 PM
  #1
Shindermouse
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Default High idle with brake on throttle back

i have a redcat volcano 5v pro for some reason it idles extremely high when throttled back and brake on. linkage isnt hitting pull start handle. when observing carb it is not sticking in position. problem first started half way through a run. now it just idles high right off the bat. i tried adjusting idle to no avail. please help any suggestions apreciated.
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Old 02-09-2008, 07:57 PM
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Default RE: High idle with brake on throttle back

how big is your carb opening?
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Old 02-10-2008, 12:19 AM
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Default RE: High idle with brake on throttle back

the inside diameter is 8mm and the outside is 12mm
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Old 02-10-2008, 12:44 AM
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Default RE: High idle with brake on throttle back

My revo did that after breakin
had to richen up low needle to get idle right.
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Old 02-10-2008, 12:50 PM
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Default RE: High idle with brake on throttle back

thanks i will give that a try
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Old 02-10-2008, 12:52 PM
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Default RE: High idle with brake on throttle back


Quote:
ORIGINAL: Shindermouse

i have a redcat volcano 5v pro for some reason it idles extremely high when throttled back and brake on. linkage isnt hitting pull start handle. when observing carb it is not sticking in position. problem first started half way through a run. now it just idles high right off the bat. i tried adjusting idle to no avail. please help any suggestions apreciated.

check and see if you idle is set to high for some reason, pull the air filter off and hit the brake and see where the car is set to, should be 1mm open,

if its a high/uneven sounding idle it could be your low end needle is too lean.
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Old 02-10-2008, 03:01 PM
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Default RE: High idle with brake on throttle back

thanks for your reply - throttle looks like it is open at least 2-3 mm - will adjust it. Also I have been told gas is only good for 3-4 weeks - is this true?
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Old 02-10-2008, 03:13 PM
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Default RE: High idle with brake on throttle back

no, fuel is good for alot longer if you keep it closed and in a cool, out of the sun place
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Old 02-10-2008, 03:17 PM
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Default RE: High idle with brake on throttle back

thats good news about the fuel. Should have asked before - how do you adjust throttle to close the gap ?
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Old 02-10-2008, 03:21 PM
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Default RE: High idle with brake on throttle back

idle screw, counterclockwise to lower the idle
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Old 02-10-2008, 03:56 PM
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Default RE: High idle with brake on throttle back

thanks for picture - looks exactly the same as mine. I have tried turning idle screw counterclockwise still runs fast - is their a way to close gap in throttle. Looks like it rotates inside carb and there is still a 2-3mm opening when throttle fully backed off.
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Old 02-10-2008, 04:02 PM
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Default RE: High idle with brake on throttle back

the trim knob on the radio may be set too high, its the small knob with th on top of it.
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Old 02-10-2008, 04:14 PM
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Default RE: High idle with brake on throttle back

have set trim and there is still gap 2-3 mm in carb. can this gap be reset? does it need to be dismantled? really appreciate your help
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Old 02-10-2008, 04:49 PM
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Default RE: High idle with brake on throttle back

when you hit the brake, does it close? if not you have to turn the idle crew counterclockwise more.
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Old 02-10-2008, 05:59 PM
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Default RE: High idle with brake on throttle back

It worked ! (turning idle screw counterclockwise to close gap) truck runs better than ever now. Thanks very much for your help. You made my son's and my day!
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Old 02-10-2008, 06:00 PM
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Default RE: High idle with brake on throttle back

excellent bro, i am glad it worked out and i was able to help you, now go have some fun with your son.
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Old 02-10-2008, 06:03 PM
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Default RE: High idle with brake on throttle back

how do you measure the gap in the carb
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Old 02-10-2008, 06:06 PM
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Default RE: High idle with brake on throttle back

by eye
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Old 02-10-2008, 08:40 PM
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Default RE: High idle with brake on throttle back

ehroof,
Do the redcats have a stop so you if you unscrew the idle screw the slide wont close all the way?
my revo does and not sure if my redcat does or not?
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Old 02-10-2008, 08:50 PM
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Default RE: High idle with brake on throttle back

no, it will close all the way.
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