Question about 2007 ATK 450 Mx

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Slow deceleration in neutral

Any of you atk 450 owners experience a slow return to idle when you chop throttle (in neutral)? Just sitting there revving the engine does this

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Pull carb and make sure jets are CLEAN the slightest debris can cause hanging rpms I removed and cleaned carb twice before I actually got it right on suzuki

Posted on Aug 28, 2013

  • gotta clean it Aug 28, 2013


    Hanging rpms? Pull carb and do a thorough clean be certain jets are free of debris It took me three times but mine finally was right after cleaning. Dealer told me when I was going to purchase new carb

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It revs fine but then backs down to idle slowly. Cdsracer mentioned that his cousin's in SoCal also does this.... Is it due to the different dirtbike clutch basket size? Any idears? Something simple maybe?Mine both drop right back down. Sometimes a slight hover at 2200 RPM or so then settles at 2000 RPM (usually only before motor has fully warmed up) ,,,

Posted on Nov 10, 2008

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1 Answer

2003 Yamaha V Star 1100 Classic slow to drop to idle


Hi, Ronald and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector
10. Multi carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links blue below. Good luck and have a wonderful day.
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1 Answer

Revs high when i change gear


Is it possible the clutch pedal is interfering with the throttle? Start the engine in neutral and allow it to idle. Press only the clutch pedal down and see if this increase the engine speed. If it does speed up the engine and slows back down when you release the clutch then somehow this operation is where your fault lies. If it doesn't alter the idle speed, then rev your engine and release the throttle to see if it returns to idle immediately. If it is slow to return to idle then your throttle cable could be sticking. This means when you change gear lifting off the throttle has little effect and depressing the clutch to change gear causes the engine to race as the throttle is still partially open.

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Maybe your throttle slider is jammed open or u were running out of fuel or the throttle cable jumped out of its housing from the top of the carb.

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1 Answer

V Star 1100 Classic will not return to idle at a stop without shifting into neutral


Hi, Ron and the usual suspects are:
1. Throttle cables improperly adjusted or pinched.
2. Idle adjusting screw needs to be backed off.
3. Intake system air leak.
4. Fast idle choke ramp is not releasing.
5. Broken throttle return spring.
6. Damaged diaphragm or slide.
7. Faulty MAP, TPS, ATS, O2, VSS sensors or wiring/connector
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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1 Answer

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Hi, Anonymous and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector
10. Multi carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links blue below. Good luck and have a wonderful day.
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Hi, Vetter596 and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector.
10. Multiple carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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My 1997 honda vt1100 shadow wont run or idle if i take the choke off and backfires on deceleration and acceleration what can i do to fix this issue?


Hi, Pastortmg1 and the usual suspects are:
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2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Vacuum line from the petcock to intake manifold cracked.
5. Float needle and seat sticking.
6. Float level too low.
7. Carburetor bowl vent line clogged/blocked/pinched.
8. Idle adjusting screw set too low.
9. Air/fuel mixture screw set too lean.
10. Idle port, transfer ports, slow air jet clogged.
11. Slow fuel jet clogged.
12. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on the blue links below. Good luck and have a wonderful day.
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2003 yamaha yzf600r carbureted, When I twist the throttle (fast or slow) it sputters for a second then revs up and just sits at 4000 rpms, even if i just poke the throttle at idle it will rise up to 4...


Hi, Striker_1011 and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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1 Answer

Rpm and acceleration problem


throttle sensor fault. might be cleanable if removed. also could be a damaged idle valve, might be staying open this cal also give high revs. and tap and it will go down as its sticking. acceleration is the throttle sensor i may have blank spots. removing it and spraying in the switch breather hole and shake the cleaner around and turning it at the same time should clean the sensor. then shake and leave to drain out the cleaner. idle valve you will need to remove it and clean ti with some carb cleaner and a brush like toothbrush, clean it thorley out push the pin in and out to make sure its not sticking at same time spray it. then when clean leave to dry. then refit them. hope this helps

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1 Answer

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clutch cable needs adjusting its still engaging whilst when you stop by sounds get back to me if its wrong i have other optons

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