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Old 02-24-2007, 06:05 PM
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Default 2000 Johnson 115 ocean pro, How should it idle?

I posted a question about the carbded Johnson. I went ahead and bought it. but when I let it idle,using the muffs, it will sort of ramp up and down and puff a little smoke, Not sure if it has bad gas from setting, or if it just needs some tuning, could it be that it is putting a little much oil when it puffs. It appears to have new plugs, How should the motor Idle? will it ramp up and down and puff a little almost like a burp of smoke. Other than that it seems to be great.
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Old 02-24-2007, 07:23 PM
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Default Re: 2000 Johnson 115 ocean pro, How should it idle?

Not on this one. It does run good, and the price was good on the boat, One owner, and looked well taken care of. I am going to have it checked out for spring anyway, just wanted to know a little information to make sure the boat service mech, does not steer me wrong. I know they replaced the VRO last year. Would this have any affect. I will get fresh gas for it. I think that may be part of it. any other information would be great.
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Old 02-26-2007, 06:29 PM
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Default Re: 2000 Johnson 115 ocean pro, How should it idle?

How would the gap on spark plugs affect the idle. I removed the plugs and replaced them, I checked the old ones and they were 020 the specs call for 030. Just wondering would this cause any issues, There is not a lot of difference in the gap, but not to spec.
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Old 03-01-2007, 10:37 PM
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Default Re: 2000 Johnson 115 ocean pro, How should it idle?

You cannot judge the idle quality while the motor is run on a hose flusher. There is no exhaust backpressure that is present when the motor is in the water and the carburetors are calibrated for that backpressure. On a hose, the motor runs leaner and at a higher rpm. Stale fuel can also affect the drivabillity of the engine

The correct sparkplug for that motor is Champion QL78YC gapped at .030". Too narrow a gap can affect the idle and acceleration on your outboard.

Mr. Bee
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Old 03-11-2007, 08:36 PM
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Default Re: 2000 Johnson 115 ocean pro, How should it idle?

A1, I pulled the plugs on my Johnson and noticed that the left lower one looked like it had not sparked and the other above it was bit darker, then I pulled the Right side and they looked very dark like they had been sparking alot. I posted a thread about fluff coming out of the prop, and people suggested I check the plug wires, they were good so I pulled the plugs, I think I may have two cylinders not firing. This may explain the unusal idle. shouldnt the plugs look uniform? If I change my power pack is there adjusting like timing or something I well need to do?
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Old 03-12-2007, 07:22 AM
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Default Re: 2000 Johnson 115 ocean pro, How should it idle?

Normally the plugs will look diferent in the various cylinders when run a low speeds.

If you were to replace a powerpack, checkng the timing is recommended
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Old 03-12-2007, 08:54 PM
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Default Re: 2000 Johnson 115 ocean pro, How should it idle?

A1 decided to drop it off at the shop, I want to make sure it is in good shape for the season, I really thank you for answering questions! I am sure you get a lot of dumb ones like mine.
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