Ch150 1987 scooter - Changed carb, now white smoke!

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Harv
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Ch150 1987 scooter - Changed carb, now white smoke!

Post by Harv » Sun Jan 19, 2020 12:04 am

Help! Been having trouble starting. Bought new carb. Still had trouble starting until I found out I had some lines mixed up connecting to carb namely the coolant line. Now it starts quick but now it has white smoke. It’s coolant all right. The scooter never overheated. Just the carb was getting yucky. Could it be that there is coolant mixed in the gas bowl? Bad carb? I’m original owner. Not in mood to tear this apart. Looks like a lot of work. Used to run good. No smoke. Any ideas?

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flybd5_juan
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Re: Ch150 1987 scooter - Changed carb, now white smoke!

Post by flybd5_juan » Sun Jan 19, 2020 8:58 am

Don't do it again. You'll have to take it apart and clean it.
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Re: Ch150 1987 scooter - Changed carb, now white smoke!

Post by Harv » Sun Jan 19, 2020 3:22 pm

Think I messed it up? Should I bypass the coolAnt line? It’s only 1/16 ” inside diameter. It’s a small line.

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Re: Ch150 1987 scooter - Changed carb, now white smoke!

Post by flybd5_juan » Sun Jan 19, 2020 6:43 pm

I am not sure how you managed to hook up a coolant line to the carb, but if it got in there that means it got to the cylinder. Either you take it apart and clean it, or you can just run it until you burn off whatever you got into the engine. If the line is there it's for a good reason and you should not bypass it. You need to put it back the way it should be installed.
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Re: Ch150 1987 scooter - Changed carb, now white smoke!

Post by Harv » Sun Jan 19, 2020 8:11 pm

Thanks.
The tiny coolant line is the same size as a vacuum line. So easy to pick wrong port. Found hardly any info about what this does at the carb except it heats something. Not a choke. That’s electric.

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Re: Ch150 1987 scooter - Changed carb, now white smoke!

Post by flybd5_juan » Sun Jan 19, 2020 9:40 pm

Look in the manual. There's no coolant anything going to the carb.

http://www.motorscooterguide.net/Manual ... Manual.pdf
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Re: Ch150 1987 scooter - Changed carb, now white smoke!

Post by Harv » Sun Jan 19, 2020 10:20 pm

Underneath the bystarter are two ports. One is the line from the radiator. Other goes to the water pump

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Re: Ch150 1987 scooter - Changed carb, now white smoke!

Post by Harv » Sun Jan 19, 2020 10:24 pm

How can I post a picture?

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Re: Ch150 1987 scooter - Changed carb, now white smoke!

Post by flybd5_juan » Sun Jan 19, 2020 10:52 pm

You can't post pictures directly, you can only post links to pictures by clicking on the image icon on the editor toolbar, the one that shows a popup that begins with "Insert image:" when you hover the mouse pointer over it. That means you have to save the picture somewhere on the web and post the link to it.
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Re: Ch150 1987 scooter - Changed carb, now white smoke!

Post by Harv » Sun Jan 19, 2020 11:23 pm

I guess I can’t on iPhones

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Re: Ch150 1987 scooter - Changed carb, now white smoke!

Post by Harv » Sun Jan 19, 2020 11:41 pm

http://scooterdoc.proboards.com/thread/ ... rb-cooling


Look at this. Had postings about these coolant lines

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Re: Ch150 1987 scooter - Changed carb, now white smoke!

Post by flybd5_juan » Mon Jan 20, 2020 10:29 am

Even they couldn't figure it out. I can't see why that would be there except to prevent carb icing, but that is incredibly rare. The manual is your friend. Talk to Manuel. :)
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