go kart won’t run on the ground but will when the kart is jacked up

[bryans2121]

does anyone know a fix to this? i can’t seem to be able to post a video here but i can show you through my phone number

 

[ezcome-ezgo]

Engine? Drivetrain? Throw us a bone.

 

[bryans2121]

Engine? Drivetrain? Throw us a bone.

it has a 5.5hp briggs and stratton. i also do not have the throttle cable set up.

 

[bryans2121]

does anyone know a fix to this? i can’t seem to be able to post a video here but i can show you through my phone number

 

[ezcome-ezgo]

Possible causes: Clutch is either sticky or toast, idle speed too high. There is way too much slack both of those chains, I am amazed the chain stays on the sprockets at all.

 

[WillMatrix]

Possible causes: Clutch is either sticky or toast, idle speed too high. There is way too much slack both of those chains, I am amazed the chain stays on the sprockets at all.

What kind of clutch was that????

 

[madprofessor]

There is way too much slack both of those chains

There shouldn't be any noticeable droop in a properly adjusted chain, that slop you have ain't gonna make it. Ever heard of a half-link for when you just can't get a chain adjusted right with the amount of slide there is for it?
8Pcs #35 Chain Offset Half Link Roller, 3/8" Pitch Carbon Steel for 06C Chain | eBay

 

[Karttekk]

Check this image of a properly adjusted chain courtesy of Go Kart Supply.

Go Kart Chain | Go Kart Chain Tools | Mini Bike Chain

Go Kart Chain and Mini Bike Chain. High Quality Go Kart Chain, Mini Bike Chain, Masterlinks, Halflinks, Go Kart Chain Breaker Tools and Chain Tensioners. Standard Roller Chain for most brands. 35 Chain, 40 Chain, 41 Chain, 420 Chain and 50 Chain.

www.gokartsupply.com

 

[Karttekk]

"There shouldn't be any noticeable droop in a properly adjusted chain"

This is incorrect. There needs to be some droop in a properly adjusted chain. Refer Go Kart Supply image.

 

[panchothedog]

Aside from your chains being too loose your clutch looks downright tired.
From your picture it looks like the final drive ratio is way too tall for the size of tires on your kart. I think you're going to have problems even with a new clutch getting the kart to leave from a dead stop.

 

[Rat]

Most common causes for an engine that runs fine unloaded but not loaded:

1.Intake leak
2. Dirty carb
3. wrong jetting in carb
4. Incorrect Air/Fuel screw setting (where equipped)
5. Sticky/Bad clutch
6. Being an OHV, Incorrect valve lash on either or both valves
7. Bad head gasket/ loose head
8. Loose spark plug (rarely an issue but I've seen it be a cause)