Cranks but won't start

[amishn8]

My '71 cb350 used to run great. I cleaned the carbs, put her back together, ran great. Installed a new battery, and now she won't start.

She has spark, and fuel flowing to the carbs, good compression, and turns over great, just won't start.

Spraying starter fluid into the carbs won't even get her to fire.

 

[Sonreir]

After trying to start, are the plugs wet with fuel?

 

[amishn8]

Battery is 12.5volts and she still acts the same when trying a jump start.

Plugs are dry after attempted starts.

 

[Sonreir]

Sounds like a possible fueling issue, then.

The first step it to get the carbs off the bike and ensure there is fuel in the bowls.

 

[lingo]

No need to pull the carbs. Just pull throw the bail and pull the bowl off.

 

[amishn8]

Yep! Full Bowls.

 

[Bozz]

on a multi-coil I'd suggest you make sure you didn't accidentally swap plug wires.
(I've certainly been tripped up by that in the past)
If you can hit it with a quick spray of starting fluid through the carb, that may be enough to confirm the fuel as the suspect.


It certainly sounds like a fueling issue at the moment...

 

[Bert Jan]

Why is your name amishnight? If plugs are dry it sounds liek no fuel indeed. Strange it occured while you changed the battery. Are you sure she fires or are you assuming?

 

[amishn8]

Ok, it was simply fouled plugs. New plugs in and she's humming again.

At least one side of her. Nothing on the right side for some reason now.

 

[Bert Jan]

ok, you we're assuming the plugs were firing. Please be sure to give the correct information as you're the only one being with the bike. Is the other plug firing or not?