2003 Yamaha YZ 250 "spark plugs black" Questions

Ad

Question about Yamaha YZ 250 Motorcycles

4 Answers

spark plugs hi my yamaha blaster will run for few days then when i start it the following day it will go for 10min then stop i remove the spark plug it is black an sometimes wet even after cleaning it

Ad

Question about Yamaha YZ 250 Motorcycles

1 Answer

...spark there is no green wire there is a white with black stripe a brown and a red coming from statorinto the cdi same colors and out the cdi is orange to coil and a black and black and white to kill ...

Ad

Question about Yamaha YZ 250 Motorcycles

2 Answers

black and usually wet. I have also changed the plug, the spark is good and so is the compression. I have no idea what to do next. Still seems to be a fuel problem Check your carb. vent tubes, they may

Question about Yamaha YZ 250 Motorcycles

1 Answer

...black rubber thing going down into the top of the motor) dont be surprised if it only just comes out after few minutes of yanking and pulling in every direction once this is out you need 14 mm spark ...

Question about Yamaha YZ 250 Motorcycles

1 Answer

...spark plugs are not properly gapped, carb flooding from too many tries and ignition timing chain has moved away from specified point. Just try to check those components. Start taking the spark plugs ...

Question about Yamaha YZ 250 Motorcycles

1 Answer

...spark plug and that didnt work so does anyone know what the most common thing to go out the electrical system coil, cdi or magnito or if there is something else for me to try please let me know ...

Question about Yamaha YZ 250 Motorcycles

3 Answers

...spark arrestor. Also put in a new top end due to compression loss. I am getting lots of black goo out of the tailpipe and connection. Hard to start when it stalls. Using smokeless synthetic at 32:1. ...

Question about Yamaha YZ 250 Motorcycles

1 Answer

...Black ooze is due to being too rich. You need smaller jetting. (Pilot and main) You can read the spark plug for jetting, as you want it to burn chocolate brown. Also, a carbon plugged exhaust power ...

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

470 questions posted

Ask a Question

Usually answered in minutes!

Popular Products

Top Yamaha Experts

vince

Level 3 Expert

2530 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1212 Answers

littlewheel

Level 2 Expert

122 Answers

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

Answer questions

Manuals & User Guides

Loading...