Question about Briggs & Stratton Electrical Supplies

1 Answer

Idle fluctuates up and down

Engine starts well and have to keep at full throttle for a while or it dies. Once it warms up I lower the idle and the engine seems to fluctuate. I don't know it it's the governor or adjustment of the carburator. Any advice?

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Expert
  • 169 Answers

This sounds like a carb problem. While there are not adjustments on the carburetor other than the idle stop screw, you can still disassemble the carb and clean it out. For what it's worth the flapper thing at the engine side of the carb is the throttle, that other flappy thing at the air cleaner side of the carb is the choke. :-)
Modern day small gas engines like this have really small holes in the carb compared to the good old days. You should carefully look in the fuel tank for any junk and dirt that may have sneaked in there (blow it out with air), also look at the fuel line and if it's not soft and nice replace it. Lastly be sure to poke a thin wire thru all of the holes in the carb when you're cleaning it, dirt hides everywhere.

Rate me please,

Posted on Dec 03, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Toyota avalon 2000 engine stops even after the engine is warm. sometimes the idle is erratic.

Maybe the Throttle Pedal Actuator needs a clean. If dirty the flap is not opening as it should.

Mar 11, 2014 | Toyota Avalon Cars & Trucks

1 Answer

I have 2004 Buick Rendezvous cold idle issue keeps dying until warm

Check the idle air control on the throttle body it controls the rpms until it is warmed up. You can use a meter to check it.

Mar 27, 2017 | 2004 Buick Rendezvous

1 Answer

1996 mercedes c280 dies when put in drive

Engine stalls or RPM fluctuates at idle up and down or dies near idle.

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control

Oct 15, 2012 | 1996 Mercedes-Benz C-Class

2 Answers

Whenever i put my blazer in gear it dies

I'm assuming it's the 2.8, I'm not sure when they started putting the 4.3 V6 in them.
Anyway, a few things come to mind when something won't idle.1. EGR valves. If they are open at idle, it won't idle. It's open at cruising speeds when the engine is warm, but not at idle or full throttle.
2. Idle air controller (IAC): This is a little electrical valve located on the side of the throttle body. It regulates the amount of air that the engine needs to idle at the correct speed. It makes up for stuff like cold temps, being in gear, or having the A/C on at idle. They also get full of junk and jam up, or simply fail electrically. Replacement is extremely simple.
3. Ignition timing. If the timing is late (********), engine vacuum is lowered and it struggles to idle, even without the load of a transmission in gear.
4. Vacuum leaks. Crunchy old vacuum hoses make everything worse.

Apr 07, 2012 | Chevrolet Blazer Cars & Trucks

1 Answer

1994 chevy with 5.7 L with throttle body inj. when i start it the idle drops down and sometimes dies. when you put it in gear idle drops really bad and sometimes dies. once i'm going down the road the...

Sounds like you have a vacuum leak. When the engine is cold the leak is there but as the engine warms up the parts start to expand thus closing the gaps and sealing the leak. I had this problem on my personal vehicle and it turned out to be lower intake gaskets.

Jan 29, 2011 | 1994 Chevrolet C1500

1 Answer

Bike keeps first start up is normal choke out runs ok until it gets about warm up time to push in choke then it dies.will not start back up unless ing. And run switch are reset. Does not want...

Ok, Never use the enricher anymore than you have to. It's way to rich on every CV carb I've ever seen. It will foul your plugs. I start my bike with the enricher on but as soon as I can keep the bike running at a fast idle with the throttle tension screw on the bottom of the throttle grip, I set the screw to hold the idle at about 1500 RPM or so until the engine is completely warm on the top end. When the rocker boxes start to feel a bit warm, I'm ready.

Now, when Harley came out with the Twin Cam, I quit working on them. I work only on the older models, Evo powered and older. The reason is that Harley went to electronic engine control modules. This sounds a lot like what you've got.

To cure your idles problems, once you get your engine to full operating temp, set the idle speed using the throttle stop screw at the carb. Take the air cleaner outer cover off and you should be able to see the screw at the top front of the carb. Clockwise speeds the idle up. Now, the engine is not going to idle correctly until it is completely warmed up. That usually takes at least five miles of riding or so. Until then, you must keep the idle set with the throttle grip.

The alternative to this is a fuel injection system. And, you only think you have problems now. Read some of the problems those people have on this forum. I'll keep my '94 FXDWG.

Good Luck

Sep 29, 2010 | 2000 Harley Davidson FXST Softail Standard

1 Answer

My 98 Honda Accord Vtec 4cyl. eng is starting fine, but after start the idle dips a few times and regains for approx. 3min. If I drive without warming up the car will hesitate and the gas pedal will delay...

Seems like the coolant temperature sensor is giving the computer erroneous readings, and it is not adjusting the fuel mixture properly for cold engine operations. You should have the check engine light on, indicating this malfunction. The idle fluctuations are normal. The engine is trying to die, from the improper cold mixture, and the computer (ECM), recognizing low idle speed, is sending it back up. Another possibilty is that the butterfly on the throttle body is not closing completely, to allow richer mixture needed for cold starts.

Sep 09, 2010 | 1998 Honda Accord

1 Answer

A 1985 Sentra - The engine idles until warm then it dies.

has it got a idle control valve, have tried adusting throttle cable slightly

Oct 05, 2009 | 1985 Nissan Sentra 2 Door

Not finding what you are looking for?
Electrical Supplies Logo

Related Topics:

1,141 people viewed this question

Ask a Question

Usually answered in minutes!

Top Briggs & Stratton Electrical Supplies Experts

John Trevino

Level 3 Expert

1388 Answers


Level 1 Expert

20 Answers

Craig Butler
Craig Butler

Level 3 Expert

1723 Answers

Are you a Briggs & Stratton Electrical Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides