Question about 2007 Jeep Scout

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Power loss & Fouling Plugs on an 75' IH Scout

I've got a 1975 IH Scout. It was sitting on our ranch for a few years. Then i started to work on it, a few months later it ran. Mild problems here and there, but nothing real bad. A few months back however, around october or november, it started to have a loss of power, extreme loss of power. I had to stand on the pedal to go 30 mph, literally. Now I still have that problem, but also about every time I drive it, the plugs foul. I the vaccum advance is messed up, and thats the power loss, and also that the Electric Fuel pump screwed up the seat in the carb, which messed up the float and is now letting to much fuel in. Which attribute for the fouling spark plugs and other problems like gas in the oil. I think. But im not expert, Please help. Any advice is appreciated.

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Sounds like you are on the right track, except that the vacuum advance won't give you the radical symptoms you have. I'd take the carb apart and clean it out. likely the power valve is gummed up and could also be the needle & seat are worn. Make sure you find a good rebuild kit before taking it apart though...the gaskets are likely dried out & will break.
After all this time it's possible that your float maybe sinking. I've seen this happen before. If you have one of those litle generic fuel pumps likely it cant make more than 5psi on it's best day, so I don't think it will blow the needle off the seat.
Yes...change your oil & plugs after youv'e finished and don't drive it with fuel in the oil.

Posted on Apr 20, 2009

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