Topic: Need help with in minutes???

[LoopsAndLogic]

I have somebody coming to view my bike, and for some reason, that being only 25f outside, when I go to free rev my bike from idle, I get a pop either from the exhaust or the air intake.

 Is this a sign of a rich mixture or a lean mix??

Also, it does have the pilot screws on the carb, but somebody told me it determines the fuel amount not the air.

It's a Honda C70.

Any help on this today would be needed.

Thank you
 
 LL

[LoopsAndLogic]

Crap! I just noticed I put this in the wrong forum subheading. Sorry!

This will probably be moved......

[Geeto67]

sounds like she just isn't warmed up.

[.RJ]

My SV650 does the same in the cold.  Just let it warm up.

[LoopsAndLogic]

I should have mentioned, that I went on a 6mile run. And when I left the driveway, she was stumbling a little.

But once I was running up and down city streets, I noticed the low-mid was back and strong, but when I'm cruising at 35mph and I'm
at 3/4 throttle and I go to apply WOT for further speed, she just goes on her marry little way slowly. NO popping!

It does have 10hp..... or was that 7hp. Either way, once she's warmed up, do you think the cold weather is messing up the mixture???
That is, the main jet size which is for WOT??

Cause the PO put a 88 in there, and that gave me serges in the summer, so I put a 90 in for the main, and that fixed it perfectly!

 I would hate to have to put another size jet in there. But than again, I won't have time before the buyer gets here.

Thanks for the speedy reply. Much appreciated

LL

[HITMAN]

Sounds like it's a little cold blooded.

Besides messin' with the timing or mixture, a quick check on the plug gap & resistance doesn't hurt.

[LoopsAndLogic]

The gap is great, and the color is a nice coffee mocha with no black or gray spots. It also has a New NGK spark plug cap.

How many more miles do I have to drive until it's warmed up?? It's a single cylinder, single carb scooter.

It has the same motor as the legendary CT70 trail mini's.

LL

[merc2dogs]

 Use a hair dryer to warm up the carb a bit, it may be frosting.

 Used to have a truck that would do that untill I put extra long heater hoses on it then when the weather got cold enough I'd loop them around the carb to keep it warm.

Ken.