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Old 11-23-2005, 02:18 AM   #1
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Default Too much fuel or Oil spitting?

Hello everyone,

Really new to this, but I have done the 'brake-in' method to my OS engine, and I notice that the car leaves a distinct line of fuel on the ground, this happens non stop, whilst in motion. Is this normal? Its not for a few seconds, it happened through all five tanks today.

The car works well and good aside that.

By the way, Engine is an O.S. 15CV-EX

A satisfied noob...
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Old 11-23-2005, 05:48 PM   #2
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It's just running rich. Lean it out a little. Turn the top end needle clock wise a little at a time and you will notice a speed increase and a decrease in "oil spitting"
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Old 11-25-2005, 11:59 PM   #3
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Default Erm...

Okay, I did this, but the engine kept cutting out, and spit a little less fuel.

I'm stunned, it shouldn't spit like this.
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Old 11-26-2005, 12:38 PM   #4
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Are you certain you don't have a leak in your exhaust coupler or return line?

Also, make sure you put a loop of fuel tubing into your return line going to your fuel tank. Otherwise, the pressure in the fuel tank will try and force fuel down the return line and out of your exhaust. I think this is probably what's happening for you.
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Old 12-10-2005, 12:13 PM   #5
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It may be the bottom end setting that is too rich. Get your engine up to running temperature, then pinch off the fuel line from fuel tank to the motor with a pair of needle nose pliers. If the motor idles without any change in speed for more than 2 or 3 seconds, you are probably too rich with the bottom-end setting. Make sure you change your top-end setting back to where it was (or close to it).
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Old 12-17-2005, 12:30 AM   #6
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Make sure to do this pinch about 1 inch from the nipple to the carb.
Joe Cude
Mugen MBX-7R Mugen MTX-6R Mugen MTC-1 Mugen MRX-6 Mugen MST-1 Tamiya Euro Truck
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