Wednesday, February 25, 2009

Day 72 "Gas, Compression and Spark?" 25 Feb 2009

Click the pic of the microfiche to see the carburetors in a bigger view! After the second time of rebuilding my carbs I was sure that I didn't have a problem with fuel delivery. A quick check of the spark plugs confirmed it the two mis-firing cylinders had wet plugs. And I know that my compression is good so that leaves one thing...
Sparkey!

Where is my spark? These have got to go!

And that is why.

Effective and they look good.

3 comments:

  1. Glad you found that problem you got lucky it was that easy! :)

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  2. Got a question for ya I have another motorcycle that has no fuel pump, its gravity fed. I give it gas and it takes a long time to rev up. And the same with when i let go takes awhile to come down. I think they call that a hanging idle. How do I know if its getting enough gas? Or how would you troubleshoot something like that?

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  3. Dangerous When thirsty,
    I have seen a similar problem due to a improperly set mixture but it could be any number of things depending on the type of carbs that you have however I would start with disassemble to ensure that the jets are clean at a minimum but it is very possible that it's sucking air too. The fuel system is generally fairly simple check to make sure fuel is getting to the carb/carbs and then go from there. Then make sure your float and float needle on the carb or carbs are functioning properly and not sticking but like I said your have to just dive into it.

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