bedri
Scoot Junior
Posts: 7 
|
Post by bedri on Oct 15, 2017 4:06:15 GMT -5
youtu.be/tpElAnXK74UI have the same problem with the video. what is the solution to this problem ? My engine china Origin, 2011 model gy6 engine, 150cc,157f engine code. Weight 250 kg utv. I installed 61mm 4 valve big bore kit.I use the original 24mm carburetor. It works well. It's going fast.But I have the same problem with the video. Thank you everyone who helped.
|
|
|
|
Post by bluegoatwoods on Oct 15, 2017 5:47:45 GMT -5
Did you check that your carburetor has not loosened on the air intake?
|
|
bedri
Scoot Junior
Posts: 7
|
Post by bedri on Oct 15, 2017 6:24:49 GMT -5
yes I checked. No leaks.
|
|
|
|
Post by pinkscoot on Oct 15, 2017 8:36:11 GMT -5
What does your plug look like? You could still have an air leak someplace.
|
|
|
|
Post by tortoise2 on Oct 15, 2017 9:43:17 GMT -5
Link to scooter style? If a floorboard gas tank with pulse-pump . . reduced flow at wide-open-throttle?
|
|
bedri
Scoot Junior
Posts: 7
|
Post by bedri on Oct 15, 2017 10:56:14 GMT -5
|
|
bedri
Scoot Junior
Posts: 7
|
Post by bedri on Oct 15, 2017 10:57:34 GMT -5
Trust me. No leaks.
|
|
bedri
Scoot Junior
Posts: 7
|
Post by bedri on Oct 15, 2017 11:46:24 GMT -5
Not a scooter. this is utv. but My engine china Origin, 2011 model gy6 engine, 150cc,157f engine code. Weight 250 kg utv.  |
|
|
|
Post by 90GTVert on Oct 15, 2017 15:25:06 GMT -5
Have you tried larger main jets?
Also, tons of ideas in the comments of that video.
|
|
|
|
Post by tortoise2 on Oct 15, 2017 15:57:22 GMT -5
To rule out a deficient pulse-pump . . might try testing using a gravity flow fuel tank, like from a push lawnmower. Curious why cylinder cooling shrouds are missing? |
|
bedri
Scoot Junior
Posts: 7
|
Post by bedri on Oct 16, 2017 13:04:24 GMT -5
I'm late for answering. I'm sorry. I did not try large main jet. because I made my utv engine new. how many numbers large main jet should I wear ?
I have a cylinder cooling shrouds. but to find a solution to the problem I share.
|
|
|
|
Post by 90GTVert on Oct 26, 2017 15:21:09 GMT -5
Sorry I'm way late. Even going up one size to see if it changes is a step. I usually start big and work down, taking notes along the way of the performance or symptoms so I can find what works best. www.49ccscoot.com/faq/carbtune.html#mainsel |
|
|
|
Post by gsx600racer on Oct 26, 2017 16:53:14 GMT -5
In all these pictures, I do not see any engine shrouds. Were they removed for picture purposes or have you been running it without the shrouds installed ? If its the latter I am leaning towards overheating/soft seize issues. |
|
