I have an older Viper 90 that has been a workhorse for some time. My kids are starting to outgrow it, but it's still a fun, well built machine.

It seems every other season I need to tear down the carb, and I've done that, but now it is really hard to start when it's cold... Even if it ran 2 hours before...

I did the usual: Air filter, fuel filter, drained carb, etc. It takes a quick shot of starting fluid to get running, and seems to run weak... This is new. . . (ok, it runs ok on flat ground, but won't pull the kids up even a little hill)

I might be tracking multiple issues here... not sure...

Any help or advice would be great.

John

 

Oh, it has a manual choke... which is working...

 

use a compression gauge and see what you've got. please don't do the thumb trick. that'll only tell ya that you got "some" compression. get a gauge so you can be accurate. it's like this: do you use a voltmeter/ohm meter to check out wiring/circuits or do you use something homemade to check out wiring? yeah, go with the correct tools. it's an investment in your toys.

 

Yup, compression.

 

Good point. If it's compression . . . I'll just sell it cheap... given we bought a 200 to replace it... I'll get a gauge tomorrow. What's the compression supposed to be?

 

90 minimum.

 

Thanks. If it is low i'll send the wife to the shop for a "can of compression"

 

lemme guess,,,,that's right near the sky hook and the can of whoop'em, right?

 

I had a eton in that the exhaust screen was full of goo and wouldn't run.