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post #1 of 4 (permalink) Old 03-07-2019, 12:15 PM Thread Starter
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Good spark, clean carb, doesn't start

So my '86 Excel has been running great, idling a little high, but other than that no issues. One day it just doesn't start. Figured it was maybe flooded, let it sit for 12 hours, and it started right up, first pull. Great, drove it two more days, no issues, then one day it doesn't start again. Figured it was some crud in the carb, pulled the carb (have to say it was pretty sparkling clean) but gave it a good spray down just for good measure, everything looked good and clear, put it back together, still not starting up at all.

I know I'm getting a good spark because if I squirt some gas into the plug sockets it fires right up and burns off the gas in there before dying again. Definitely is an issue with fuel not getting where it needs to go. What's the next thing to try? Fuel pump? Or maybe an issue in the fuel line?
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post #2 of 4 (permalink) Old 03-07-2019, 03:08 PM
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I would pull the fuel line from the carb and put the end in a container and pull the rope a few times. A bit of fuel should come out every pull. If you have fuel, it's a carb issue. If no fuel, start working back toward the fuel tank. Check the fuel pump and lines, including the pick up hose inside the tank. If the pick up hose is old, it may be rotted to the point it has collapsed and may need to be replaced. If you have any concern about the hoses, replace them all, just to rule out the problem. If the Excel has a "normal" system, the fuel pump is driven by an impulse line from the crankcase to the fuel pump. If that line gets cracks in it, it will lose the pressure/vacuum pulse that drives the fuel pump. The impulse line is usually a hard rubber hose instead of the more flexible translucent gas line that the rest of the system uses. Make note of which fitting the impulse line goes to so you can put it back in the right place. A picture is worth 1000 words

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post #3 of 4 (permalink) Old 03-07-2019, 05:43 PM Thread Starter
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Thanks!! Fuel line was the next thing I was going to check so glad I'm not crazy there. Hoping that's the culprit! Thanks for the info - it definitely seems like an issue with fuel not getting pushed/pulled to where it needs to go, so a faulty line makes a lot of sense.
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post #4 of 4 (permalink) Old 03-08-2019, 07:28 AM
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Replace all the fuel lines and I would even clean the carbs too!
To prime it all find the vent tube from the tank, blow into it with your mouth!
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