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Old 11-12-2014, 01:50 AM   #16
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Fumes coming out the carb is wrong. Something is not right there. If you had fuel spitting out the pipe the engine is running rich initially or has a ton of fuel sitting in it that needs to get cleared. The facf Fumes are coming out suggests some sort of leak or fault in the carb which then doesn't pull fuel efficiently to the engine after a period of time and causes the engine to lean out as the carb is not consistently pulling fuel to the engine. Add the fact that are bubbles in your fuel line and I am worried it's the carb. No amount of tuning is going to solve a faulty leaking carb. The revving up was caused by a leaning out of the engine caused by a leak of some sort for sure. You changed your fuel tank and fuel lines are new. So It not a leak there. You have a problem on the engine side and it's not the tune.
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Old 11-12-2014, 02:24 PM   #17
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Yeah you might want to pull the carb out and needles out to inspect the o rings.
I highly suggest sealing the engine.
http://www.amain.com/Lucky-7-RC-Air-...t-15cc/p199805

A leaking front engine bearing can cause erratic idle problems too. With it being new this shouldnt be the issue though.
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Old 11-13-2014, 11:36 AM   #18
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Sorry , should have read all of this. I'll have my coffee now.
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Old 11-13-2014, 03:06 PM   #19
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Quote:
Originally Posted by spooky 1 View Post
Sorry , should have read all of this. I'll have my coffee now.
Spooky!!! My sayin' is this. "You can 'F' my wife, but don't 'F' with my coffee. lol!

After the last couple of comments, probably got thr49 confused as heck!! We're trying to help the rookie. We'll see how he replies. Step by step I always do.
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Old 11-18-2014, 11:47 AM   #20
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Yeah, I need a cup in each eye just to get going in the mornings. This engine is sucking air somewhere.
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Old 11-21-2014, 08:50 AM   #21
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Only 1 cup per eye!!! Used to drink a whole pot!! Problem was I'd hit the pits every 9-10 minutes!!! lol!!

Air in fuel line. First thing first. New engine, Make sure the carb in tight. Seal fuel lines from Tank to Carb. Use 'o'-rings to cushion fuel tank. Many people don't think about it, but idle speed(Air gap) causes air in line. Too wide 1-1.5mm air gap. will caused it. Good tuning of carb will take care of it. Bubbles small like fish eggs will dissipate with good tune.
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