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550 injector


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Still trying to figure out my Coleman 550 start issues. I was looking at injectors and I see some with the same applications listed (Coleman Hisun 550) that have 2 holes and other have 4. I don't know which I have now, but does anyone know why this variation exists? At times it seems like I'm not getting enough fuel and I wonder if I'm supposed to have a 4 hole and have 2 hole or maybe the 2 hole has larger orifices to equal the same amount of fuel spray, something like that.

Anyone have any thoughts on this?

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