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Thread: Tuning complication engine rich and lean at same time
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Old 02-05-2019, 05:02 AM
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sebtarta
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Originally Posted by SlowLST2
An engine cannot be rich and lean at the same time. It’s just not possible.

What engine is it?
How is the pinch? How much fuel has the engine seen (realistically)?
What fuel is being used? (Nitro/oil/fuel brand)?
Glow plug brand and heat range / plug #?
Has the fuel system been checked for leaks thoroughly?

Any bubbles in the fuel feed between tank and carb when tank is half full to full is not good.

Unstable fuel mixture tuning and blowing glow plugs is a classic sign of bad bearings causing a crankcase pressure leak. Post pics of these “blown” glow plugs. As clear of a picture of the element itself as possible. It’s easy to spot.
Again what engine is this? Change all fuel lines, exhaust seals, glow plug, air filter. Make sure carb is not loose either. Set needles to factory and start over.
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