YERF Dog topspeed only 24mph!!!

[RealliveMD]

Is this particular unit using a fuel pump? It sounds like it might be starving, but only over rough terrain? Have you checked the float setting in the carb? Some carbs for automotive street use don't work very well in off road trucks because the float setting/ layout have to be changed.

What about ignition issues; have you double checked to make sure you don't have any loose/ chafing wiring? As I write this, I'm begin to think the wiring might need to be checked as well. The wiring wouldn't bounce around much on smooth surfaces, but a lot over rough. Worth a look.

That's all I can think of without the toy in front of me. Hope it's of some kind of help. Pat H

It's a pretty basic kart, which is why I didn't buy the ASC kart. The only wire is ground for key. The carb was recently rebuilt by a small engine repair place. I"m assuming the float was designed for rough terrain because the kart has shocks.

 

[Doc Sprocket]

I"m assuming the float was designed for rough terrain because the kart has shocks.

Unless I have missed something, I wouldn't bet on it. To the best of my knowledge, you have only one float choice for any given industrial engine carb. You can play with the level, but that's about it.

Regarding automotive carbs and rough terrain- there really is only so much you can do with them, too. Generally, offroaders who still use carbs will switch to a carb that is less sensitive to off-level operation. IIRC the Rochester Quadrajet is a common choice-but even it has its limits. This is why (in the offroad world anyhow), those that can afford it will switch to fuel injection( which will work upside down) and eliminate all off-level fueling issues.

 

[machinist@large]

Regarding automotive carbs and rough terrain- there really is only so much you can do with them, too. Generally, offroaders who still use carbs will switch to a carb that is less sensitive to off-level operation. IIRC the Rochester Quadrajet is a common choice-but even it has its limits. This is why (in the offroad world anyhow), those that can afford it will switch to fuel injection( which will work upside down) and eliminate all off-level fueling issues.

The only off road carbs I've run were Quads; not easy to hop up, but pretty reliable. It was my friends running Holly's that were always arguing amongst themselves about which model was best for off road/ power. the reason i started to wonder about wiring was that if anything came loose inside the shroud it could potentially be grounding out and wouldn't show. Yes, no, maybe?:toetap05:

 

[Doc Sprocket]

Quite possible- I have had that happen with a car.

 

[machinist@large]

Sorry- had to come back to this one. Grab your popcorn...

Back in 1994, I was driving a cool little 1977 Toyota Celica GT. Sweet little car, fastback, 5spd, RWD, 20R engine. I always thought it looked British with the wire wheels.

Anyhow, there came a time where every now and then the car would die out while driving. After doing it a few times, I came to the realization that it only happened...

...Wait for it...

- When I turned left!

Not going straight, not bumps, not turning right. Left only. I tell you, I went nuts trying to diagnose it. It got to the point I was planning right-turn-only routes, because it stalled out on EVERY left turn! Eventually, I gave up and had a mechanic look at it. He "tuned it up", but found nothing noteworthy. I left the mechanics', and on the first hard left-hand-turn- you guessed it- stalled out.

I was mad- I promise you that I was a VERY short distance fro

Say it isn't so!!!

That's how I found myself in the machine repair buisness; the boss would call someone to fix . When they left, it ran, but it still wasn't right. When the big rush was over, (or it wuffed the cookie again) I and/ or we would tear it down and fix it right. One day he said to me "There's gota be really good money in fixing this s*** right, because I'm paying a lot of just good money to have people come in and half a** fix it!!!. 6 months later, I'm the sole full time employee of a company I did not own. The rest of it is a separate story.

 

[Doc Sprocket]

Sorry- Dunno how I lost half a post! Let's try this again-

Grab your popcorn...

Back in 1994, I was driving a cool little 1977 Toyota Celica GT. Sweet little car, fastback, 5spd, RWD, 20R engine. I always thought it looked British with the wire wheels.

Anyhow, there came a time where every now and then the car would die out while driving. After doing it a few times, I came to the realization that it only happened...

...Wait for it...

- When I turned left!

Not going straight, not bumps, not turning right. Left only. I tell you, I went nuts trying to diagnose it. It got to the point I was planning right-turn-only routes, because it stalled out on EVERY left turn! Eventually, I gave up and had a mechanic look at it. He "tuned it up", but found nothing noteworthy. I left the mechanics', and on the first hard left-hand-turn- you guessed it- stalled out.

I was mad- I promise you that I was a VERY short distance from
setting the Evil Toyota ablaze and calling my insurance company!

I drove it home, and popped the hood open. Staring into the engine bay, I racked my brains trying to figure out how the *&^% it was *&^%ing possible that a car could run like a *&^%ing Swiss *&^%ing watch 95 *&^%ing percent of the *&^%ing time, then die every *&^%ing time I turned left, then start right the *&^% up like nothing ever mother*&^%ing happened!!!

Anyhow, after awhile of staring the mystery in the face, there IT was!

I don't know why i never noticed it before, but it appeared that the previous owner had replaced the coil wire with one of the generic ones- you know the type. It's made long, and you cut it to the right length. So, there was this coil wire- it came out of the coil, and dropped into a fairly long loop, then back up to the distributor. I picked up the loop, and immediately saw the cracked rubber insulation at the bottom of the loop! I dropped the loop again, and saw that the bottom of the loop was hanging about an inch to the left of my alternator bracket.:toetap05: Yeah- a good ground. So- I steer the car left, the loop swings right, and grounds out, completely eliminating my spark. Car stops, loop moves away from ground, car acts like nothing happened.

So- the putz saved himself 5 minutes by not cutting the wire to length- and cost me ing hours of time and frustration!
Thanks a ton, you !!!

I swapped in a spare plug wire and drove a few figure 8's- and never had another problem!

And NO, I did NOT pay the mechanic...

 

[RealliveMD]

finally counted the teeth on the sprocket. I got 35

 

[r_chez_08]

What about tyre size and clutch teeth count, and does it have a jackshaft?