Question about Raymarine St8002 S1 Smartpilot Autopilot For Outboard Motors

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Motor stalls when give it throttle but when give it choke same time throttle catch s fine ............ start no problem .....is it contol box,,,,,,,,,, not fuel line.....put a 5 gallon tank on same problem thk tony 115 yamaha v 4 1989

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It is possible that carburettor need cleaning,or float valve is stuck.

Posted on Jun 24, 2010

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1 Answer

My 1996 VF 750 C Magna starts fine with the choke open. After a minute or so as I reduce the choke and try to open the throttle, the engine just stalls out. Cannot seem to get the throttle to control


I think you are mixed up. The choke is usually closed to start a cold engine and opened once the motor warms up. The choke is closed to restrict the air flow and make the mixture richer in fuel. You can't open a choke that's already open. It's stalling because it's starved of fuel. Either a blockage or the fuel pump is not supplying enough gas.

May 06, 2012 | 1996 Honda VF 750 C Magna

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My MTD Yard Machine Y2500 starts fine and works with the choke partly closed. It also idles fine with the choke fully closed but stalls when I press on the throttle when the choke is fully closed.


when the choke is fully closed your choking the fuel out,, thats why when you give i t gas it dies , its not supposed to run with the choke on and getting fuel , use the choke only until the motor warms up to operating temp,, then open it,, and you should be fine,

Jun 01, 2011 | Mtd Garden

1 Answer

Replaced the cap,rotor,fuel filter,even sparkplugs..car stalls when u hit the throttle..and puffs black smoke until the idle catches up


You need to test the TPI. and see if it is in sync. The throttle position sensor determines (based on a voltage scale like a dimmer switch) how much fuel the injectors will provide the motor.
if that tests ok, Then try the coolant temp.sensor switch that tell the ecu how warm or cold it is, if it failed in the "cold" mode, then it is tell the ECU to give a lot of fuel, acting like a choke

Sep 28, 2010 | 1989 Toyota Camry

2 Answers

W-7 Case loader will not start. I ran fine, shut


The fact that it will start on ether suggest it's most likely a choke problem. To see if it's the choke cover most of the air intake, if that makes it start that will confirm it's the choke.
If it starts but then stalls when you back off the throttle suggests a vacuum leak. To find a leak use your ether spray it at the base of the throttle body or carb, where vacuum hose connect or look damaged.
If the engine changes you have a leak there. BE VERY CAREFUL USING ETHER TO FIND A LEAK AND HAVE A FIRE EXTINGUISHER HANDY, FIRE IS A REAL SERIOUS RISK USING THIS METHOD.

May 26, 2010 | Milwaukee Tool Case Heat Gun

2 Answers

Idles but stalls when throttled


If you have the TB2BP EC Troybilt backpack and it bogs down or begins to stall out at full throttle with choke in FULL OPEN try the following:
1. Do the simple stuff first, Check spark plug, air filter and clean or replace if necessary.
2. Remove air filter cover, open choke and spray out the carb with carb cleaner.
3. Inspect carb and look for a flat surfaced screw with a small V notch on the side of it. It will be on the top side just forward of where the fuel lines connect. If you find it don't waste any more time looking for the High and Low fuel adjustment screws (there aren't any) this is the only adjustment other than the throttle adjustment screw you'll find.
4. Start your blower allow time for it to warm up and advance choke as far open as you can without stalling motor (mine just suddenly wouldn't run in anything other than full choke).
5. With motor running, adjust the screw to improve operation. Depending on your initial choke setting you may have to adjust, open choke to next position and fine tune.
6. Note- clockwise reduces fuel to carb, while counter clockwise increases it (if it's stalling when you attempt to throttle up it's starved for fuel) I'm sure there's a tool designed so that some tech can charge you 100.00 to turn the adjustment screw 1/4 turn but I found that a pair of fine needle nose pliers did just fine. Pay attention to original position of the V notch and what adjustments you make ( I tend to make 1/4 turns and fine tune from there) so you can always go back to your starting point. Note I'm not a technician so I can't say this the fix for your machine but it worked on mine.

Aug 21, 2009 | Troy-Bilt Garden

3 Answers

Craftsman blower stalls when choke is disengaged


You need to play with the timing adjustment, either on the spark plug, or the gap between the contact and the magneto.
That'll do it ;)
Don't forget to rate, thanks

Jul 31, 2009 | Craftsman 4 Cycle Blower/Vac

1 Answer

Starts fine then stalls when I give it any gas


if it only runs w/choke on then your jets are plugged...fuel should have been drained before storage...time for carb clean i suspect...Tim

May 30, 2009 | 2006 Yamaha V Star 1100 Classic

3 Answers

Rough idle stalls at low rpm's


check your transmission fluid,the motor will stall when fluid is low

Dec 06, 2008 | 1996 Jeep Grand Cherokee

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