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After sitting for 5 years at least...

 

Took fairings off and replaced battery. Sprayed starter fluid into air filter and engine caught after a few tries.
Got it to the point where it was running, and I could rev the engine up very high.
Then out of nowhere gasoline started flowing out of a tube in the middle of the carb area.?

I am not going to post a photo but according to the service manual it is a port that would lead to the California emissions part, which my bike does not have.
I stuck the tube of a can of carb cleaner into the port and sprayed several times.?
That behavior is not repeating.?

However, I have not been able to get the bike to stay on long enough to rev it like I did.
If I spray some starter fluid in, the bike will catch and sometimes run for up to 30 seconds.
Sometimes I have to have the choke all the way out, sometimes all the way in.
It will putter putter and then die.

At this point I am blaming it on bad gas...? Plan on draining the tank and putting new gas in.
The bike had maybe a tiny amount in it, but the gas I added when I started reviving it was maybe a year old.

Anyone have any other ideas or suggestions?
Thanking you in advance for your time.
 

There is the splitter that the fuel line goes behind the carbs. I had to rebuild mine as it was leaking down into the vacuum line and sucking in the carb causing the same. I’m suspecting yours has done the same.?
 

I have to say this about "carb cleaner":?
I have carb cleaner that's "safe" for non-metal surfaces but I also have some that will melt rubber and plastic on contact. If you happen to have one of several types that do that, spraying it into (or onto) a carb will be a disaster. Every o-ring, hose and plastic spacer that are on and inside your carbs will liquefy, some immediately, some hours later. I learned this in 1993, my first month at the first Honda dealership at which I worked. Same goes with "Brake and Parts" cleaner. You need to test chems before you use them.?

Also, I hope the engine was at operating temperature before you revived the engine "very high" because I've repaired dozens and dozens of engines that fell victim to cold-temp, non-load revving and seized the pistons. One was an hour after the customer picked the bike up, ignored what I said, and repeated the exact behavior that caused the problem. Most of those were at Harley (v-twin riders are addicted to blipping their throttles upon startup and every time they stop at a light) but the worst was a Kawasaki KE100 with a kid who kept wrecking his engine and his dad kept (stupidly) paying for it. The third time I rebuilt it, I made them watch the new piston and rings go in, explaining thenwhole time how and why it happened and how to prevent it, they nodded vigorously, and were back in a week. "These must be prone to that" the dad said.?

"Well, we've sold nearly 30 at this shop alone, and this is the only one I've ever had to fix, and I've fixed it four times now. It's not the bike, it's him," and pointed at Junior, who laughed like I'd told a joke. Dad was oblivious. I tried.


On Thursday, May 23, 2024, baltimorepc800 via <brianshupe=[email protected]> wrote:

Took fairings off and replaced battery. Sprayed starter fluid into air filter and engine caught after a few tries.
Got it to the point where it was running, and I could rev the engine up very high.
Then out of nowhere gasoline started flowing out of a tube in the middle of the carb area.?

I am not going to post a photo but according to the service manual it is a port that would lead to the California emissions part, which my bike does not have.
I stuck the tube of a can of carb cleaner into the port and sprayed several times.?
That behavior is not repeating.?

However, I have not been able to get the bike to stay on long enough to rev it like I did.
If I spray some starter fluid in, the bike will catch and sometimes run for up to 30 seconds.
Sometimes I have to have the choke all the way out, sometimes all the way in.
It will putter putter and then die.

At this point I am blaming it on bad gas...? Plan on draining the tank and putting new gas in.
The bike had maybe a tiny amount in it, but the gas I added when I started reviving it was maybe a year old.

Anyone have any other ideas or suggestions?
Thanking you in advance for your time.
 

My guess. ?Carb needs at minimum to be removed and cleaned. ?Probably worth it to rebuild it. ?A bad diaphragm could account for most symptoms you listed.

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