Newbie question 4.6 x starting issues

Nev23

Member
Messages
7
Complete newbie to nitro, so apologies if it’s obvious

Car always tries to accelerate as soon as fired up regardless of idle screw adjustment, throttle trim etc

It’s now trying to pull forwards when engaging the roto start and if it starts it goes mental pulling forward at full speed, any attempt to adjust and just stalls it. Also the spur now won’t spin freely and car won’t move backwards

Guessing it’s bad news. Any ideas or link to previous thread much appreciated
 

upbasher1

Well-Known Member
HPISF Supporter
Messages
188
Location
Ironwood, Michigan
Your clutch is sticking. Shoes are either melted to the clutchbell or the bearings are seized. Its a common issue. You need to take out the engine and inspect the clutch
 

plasma327

Member
Messages
18
upbasher1 is right but sounds like a broken clutch spring if the rest of the clutch assembly is intact.
 

olds97_lss

Well-Known Member
Messages
2,512
Location
Dekalb, IL 60115
Thanks guys was exactly that all clutch springs gone.
If it was a smaller/weaker engine, it just wouldn't start, but with a higher torque engine, especially with tires in the air, a busted clutch still allows it to start and run. Just dies when you give it brake.
 

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