digital_life
Active Member
Took the head off trying to figure out why the motor will not start I found that the spark plug gap was non existent then noticed a little ding in the piston.
I have run this motor a few times using about 4 tanks of gas and travelled about 150~200 Kilomters ran great always started up right away, Last week I took the plug out to see how it looked and put it back in today I tried to go for a boot and it would not start.
About the motor: It's a Brand new GRUBEE SkyHawk GT5B 69cc I created a thread about it with pictures a while ago
motoredbikes.com
Anyone ever seen this happen before, The only maintenance I have done is torque the heads and tighten the spark plug after almost every ride.
The plug I was using was a ngk b6hs, after it happened I tried a champion l86c an the same thing happened, Both of those plugs worked really good on my older Grubee's.
Any thoughts -- I got another head for It I will try that but kinda worried about it happening again after another 200 kilometers, This motor has 2 gaskets on the bottom end should I add another and make it three or use two on the head or could there have been some kind of defect on how the threads the spark plug hole were made.
I have run this motor a few times using about 4 tanks of gas and travelled about 150~200 Kilomters ran great always started up right away, Last week I took the plug out to see how it looked and put it back in today I tried to go for a boot and it would not start.
About the motor: It's a Brand new GRUBEE SkyHawk GT5B 69cc I created a thread about it with pictures a while ago
Brand new GRUBEE SkyHawk GT5B 69cc compared to GRUBEE SkyHawk GT5A 66
I got my new GRUBEE SkyHawk GT5B 69cc Angle Fire Slant Head and decided to compare what differences my older 66 Grubee made in 2017 were to the 2021 model. In most of the pictures below the new GT5B is on the right hand side.
motoredbikes.com
Anyone ever seen this happen before, The only maintenance I have done is torque the heads and tighten the spark plug after almost every ride.
The plug I was using was a ngk b6hs, after it happened I tried a champion l86c an the same thing happened, Both of those plugs worked really good on my older Grubee's.
Any thoughts -- I got another head for It I will try that but kinda worried about it happening again after another 200 kilometers, This motor has 2 gaskets on the bottom end should I add another and make it three or use two on the head or could there have been some kind of defect on how the threads the spark plug hole were made.
