This won't start cold. Any suggestions?

 

Do you have an automatic choke? Is it working?

When was the last time you adjusted your valve clearance?

Is this 150cc quad a GY6 engine?

 

Thanks for the reply. Yes it has an automatic choke. Not sure if choke is working correctly. Is it supposed to be long/cold and short/hot? I bought this used, so I haven't adjusted any valve clearance. Not sure about the engine. This is my first Kart like this one. Not sure to tell about the enginge.

 

I dropped th ball on this post too. My apologies. The last couple weeks have been really busy for me.

The auto-choke (also called a by starter valve) is short cold, and long warm. There is a procedure to test it here:

Troubleshooting

Select the "electric choke" menu item...

Google "GY6 Engine" to see if that is what you have. These engines are horizontal, have shrouded plastic covers over the cylinder cooling fins (part of a forced air cooling system), and have a fully automatic CVT belt drive transmission. GY6 engines have full blown service manuals available for free download. These engines are really reliable, have lots of parts available, and are real workhorses.

Not starting cold is a classic symptom for tight valves on a GY6 engine (and valves wear tighter, and they are tighter still when the engine is cold), so that is worth trying. It is not that hard to adjust them.

To avail yourself of all information sources I would suggest you also visit www.buggynews.com. Their forum speciallizes in carts and buggies. There is a lot of good info there to look at.

 

Thank you for your response! As soon as the weather warms up a little and I go back out to the garage, I will try your suggestion. Everyone talks about how fast these can go and spin out, however, the one I have does not go that fast. I have a 5 h.p. briggs and stratton that will out run this one. Thanks again!!