Question about 2003 Yamaha YZ 250

2 Answers

My 1996 yz250 will run and idle. But not open to full throtal

My yz250 will run and idle. But everytime I put a load on the motor or open the throtal it cuts out on me. I have pulled the whole carb apart and rejetted and everything I can think of. It has compressio. I don't know what else to do but need my bike running right

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 8 Answers

Change plug

check crank seal (air side)

check correct fuel flow

rings ?

Posted on Jul 15, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 4,088 Answers

Pull the fuel hose at the carburetor and place the hose end in a small clean can or bottle. Turn on fuel tap--should get thin stream of fuel. If it just drips, the trouble is probably a plugged fuel screen above the bowl of the fuel tap. Remove the screen and soak in carburetor cleaner, then replace and recheck fuel flow. Worst case--replace the fuel tap (drain the tank first).

Posted on Jul 14, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How do you adjust fuel mixture on predator 212 cc motor. Mine will idle but loads up when above half to full throttle


You should have two adjustments, lo and hi speed. Maybe even a third mechanical adjusting screw that just sets the idle higher by moving the throttle plate open or closed.

It sounds like your mixture is running way too rich....so, try adjusting the high speed first to attain the desired 'no-load' rpm which SHOULD NOT be the highest rpm you can get. If you adjust it on the high adjustment to where it screams but 'blubbers' at wide open throttle you are near to where it should be. The blubbering will straighten out under load and cause the motor to run at full power. If you mistakenly adjust it to full rpm in no-load condition, it will be set 'too lean' to safely run the saw. The excess heat generated from the extremely lean condition could either score the piston and cylinder wall or melt a hole in the center of the piston.

Then proceed to adjust the lo setting. Adjust it to where the chain just begins to rotate, then adjust it back to where the chain stops.

Feb 22, 2015 | Garden

1 Answer

Wont start after it is turned off. have to put fuel into the throtal body to start. once started , it runs great. fuel pump was replaced last spring. Can also hear the far left fuel pump relay clicking...


Hello! Change the Fuel Pump Relay...The prime contacts are defective..They are single pole double throw and normally closed for several seconds to prime the pump and then swing open applying battery to the fuel pump on the normally open side...The chatter is that set of contacts not breaking free from their normally closed position...The result is a unprimed fuel pump (which you are priming with gas into the throttle body....That plus the noise...Guru...saailer

Dec 18, 2011 | 1996 Chevrolet Blazer

1 Answer

Only runs at idle, put throtal at full speed still only runs at idol


If the saw is trying to rev up then maybe you have the brake on. Otherwise the throttle arm must have come out from behind the trigger.. Pull the cover and check

Sep 25, 2010 | Garden

1 Answer

Changing oil on yz250 1996


there should be a 10mm hex bolt head with a phillips screw slot , oil will come out of this when full, use a motorcycle oil, car oils will make clutch slip

Mar 27, 2010 | 2003 Yamaha YZ 125

2 Answers

I have a 1994 Yamaha 40 HP 3 cylinder 2 stroke engine starts and runs fine in neutral try to accelerate under load and it only will pull about 2800-3000 RPMs and wont go any faster it will rev fine in...


Reving in neutral does not mean the same thing as under load. If you need to pull 4500rpm under load and for an instant the load was gone, you would probably overrev to 6500. With the cover off and motor not running move the throttle to full forward. Look at your carbs and see if the throttle plates are wide open. If they are not all wide open take it back to the dealer. The throttle adjustment is off. You need the full range of travel from idle to topend.

Jun 25, 2009 | Light Outboard Motor Boat Bass Fishing...

2 Answers

Problems with my HomeLite UT20760 bogs down, no power


try this
you need to locate your muffler and find screws that remove a screen behind a plate you can remove on the muffler or behind the muffler itself
This screen is a spark arrestor screen and needs to be cleaned and put back or some would say discard all together, but i didnt say that.
give it a look see
this may be your problem and maybe not?
if it was you will see a trmendous difference afterwards

May 29, 2009 | Homelite Garden

1 Answer

1996 Chev Cav 4cyl 170,000 mi Starts hard Have replaced plugs


try a few things ? throtale cable? cleaning throtale plates ? check for a leack in rear main seal?

Mar 25, 2009 | 1996 Chevrolet Cavalier

2 Answers

FXR suzuki 150 will idle but wont rev


i had the same problem ! i dont know how but there was water mxit in my tank and i dumpd the fuel then it was fine

Mar 16, 2009 | 2001 Suzuki FXR 150

1 Answer

One problem left gas pedale feeling heavy


dont think cat is issue cat's only lower emmisions sounds like if u have and accelerator cable binded which is causing this or could be tps sensor faulty ts can cause throttlebody to malfunction

Feb 10, 2009 | 1996 Chevrolet Cavalier

Not finding what you are looking for?
2003 Yamaha YZ 250 Logo

Related Topics:

404 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

dhnguyen

Level 2 Expert

281 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1144 Answers

Tony

Level 3 Expert

2600 Answers

Are you a Yamaha Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...