1974 60hp johnson outboard won't run on full throttle under load , max 10%. New fuel and filters ect. The motor is old but has very low hours.

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1957 johnson outboard 10 hp fuel mixture ratio

https://www.google.com/search?q=1957+johnson+outboard+10+hp+fuel+oil+ratio

What is the mix ratio for a Johnson outboard motor?

Any Johnson outboard motor built since 1964 requires a 50/1 fuel ratio. Motors built prior to that date require a 32/1 ratio, with the exception of a few fishing motors built prior to 1955 that use a 16/1 ratio.

Feb. 22, 2021

What is the mixing ratio for a Johnson outboard motor? - Mvorganizing.org

Aug 30, 2018 • Johnson Boating

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I have a 50hp johnson outboard at full throttle it lags in power will not plan out but if I restrict or pinch fuel line between motor and the inline bulb it plans out nice runs perfect.

The fuel line from the tank to the engine may be collapsing as the pump demands more pressure! If you know someone with a fuel line with the same ends, ask to borrow it! If the problems goes away, invest in a new fuel line. When this engine was built ethanol was NOT being mixed into gasoline. Ethanol will melt some of the older fuel hoses (including those under the engine cover). Good luck!

Aug 20, 2017 • Johnson Boating

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1973 Johnson 65 hp outboard. It runs smooth, but won't accelerate at full throttle.

have the carby professionally overhauled
replace all rubber hoses from the tank , including having the fuel pump overhauled
the rubber parts break down and deposit small bits rubber in all of the jets in the carby

Jul 20, 2017 • Johnson Boating

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1993 Johnson outboard while running good will go from full throttle to barely running sometimes 5500 to 2500rpm. Carburetors rebuild gas lines good and good spark.

If your boat has a inboard tank check the Anti Siphon valve. Try to run the outboard on a separate fuel tank to isolate the fuel source to see if it is the boat or the engine. A clogged vent line will also do that.

Mar 30, 2016 • Boating

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What will make a johnsonew 50 hp out board motor bog when under load

Evinrude 50 HP Bogs at WOT - MarineEngine

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clean the carb jets etc and check fuel pump diaphrams not hard or perished ! balance the carbs also !

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My 1988 johnson outboard 50 hp motor dies off when given full throttle

Any fuel filters? If the fuel line is old I would replace it due to the ethanol in gas. If not that then clean the carburater, high speed jet may be clogged.

Aug 23, 2010 • Raymarine Linear Feedback Unit For...

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30HP JOHNSON OUTBOARD RUNS FAST ONLY WHEN IT WANTS TO!

is it one coil for each cyl or a double ht ? if single coils swop over and see if problem moves ! if double ht then swop leads over if you unbolt the coil and fit an earth wire to the coil body and try in a dustbin of water ! sometimes the ht are too short to swop ! check connections and earths !

Jun 11, 2010 • Light Outboard Motor Boat Bass Fishing...

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35hp Johnson evinrude outboard not running at full potential

Hi, did you buy your engine used? Sounds like your gonna have to get the carb or carbs cleaned. Its possible you could have a stopped up fuel filter, or not enough spark but i am guessing its gonna be the carbs. They got some gunk in em i bet. Probably old fuel turned to gunk from setting up. I had the same problem on my 40 horse.

Aug 22, 2009 • Boating

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Need to know how to set up carb on 1985 johnson outboard. front adj on the carb got moved looking for starting point to get me close to running.

try disconnecting the throttle cable, loosen carb linkages, assure that both carbs are FULL closed....tighten linkage - and cable ...check for FULL open and close with the throttle....this will be your starting point, advise to get a service manual for your outboard model to correctly adjust the carbs for max performance....GL hope this helps..

Jul 04, 2009 • Sport & Outdoor - Others

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Posted on Apr 13, 2009

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Carbs probably need to be cleaned and re-built. Common problem in outboards that havent been run in a while

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Posted on Dec 13, 2011

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Capt Jeff has the most common problem. I have also found the flexable wire coming from under the fly wheel has caused this same symptom. Hook up a timing light to the ignition wires at the spark plug and spin the motor while advancing the throttle. If the ig faulters during the spark advance- thats the problem.

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1974 60hp johnson outboard won't run on full throttle under load , max 10%. New fuel and filters ect. The motor is old but has very low hours.

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Related Questions:

1957 johnson outboard 10 hp fuel mixture ratio

What is the mixing ratio for a Johnson outboard motor? - Mvorganizing.org

I have a 50hp johnson outboard at full throttle it lags in power will not plan out but if I restrict or pinch fuel line between motor and the inline bulb it plans out nice runs perfect.

1973 Johnson 65 hp outboard. It runs smooth, but won't accelerate at full throttle.

1993 Johnson outboard while running good will go from full throttle to barely running sometimes 5500 to 2500rpm. Carburetors rebuild gas lines good and good spark.

What will make a johnsonew 50 hp out board motor bog when under load

Evinrude 50 HP Bogs at WOT - MarineEngine

motor bogs down at full throttle Page: 1 - iboats Boating Forums ..

Evinrude motor problems

My 1988 johnson outboard 50 hp motor dies off when given full throttle

30HP JOHNSON OUTBOARD RUNS FAST ONLY WHEN IT WANTS TO!

35hp Johnson evinrude outboard not running at full potential

Need to know how to set up carb on 1985 johnson outboard. front adj on the carb got moved looking for starting point to get me close to running.

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1974 60hp johnson outboard won't run on full throttle under load , max 10%. New fuel and filters ect. The motor is old but has very low hours.

2 Answers

Anonymous

Anonymous

Add Your Answer

Attachments: Added items

Related Questions:

1957 johnson outboard 10 hp fuel mixture ratio

What is the mixing ratio for a Johnson outboard motor? - Mvorganizing.org

I have a 50hp johnson outboard at full throttle it lags in power will not plan out but if I restrict or pinch fuel line between motor and the inline bulb it plans out nice runs perfect.

1973 Johnson 65 hp outboard. It runs smooth, but won't accelerate at full throttle.

1993 Johnson outboard while running good will go from full throttle to barely running sometimes 5500 to 2500rpm. Carburetors rebuild gas lines good and good spark.

What will make a johnsonew 50 hp out board motor bog when under load

Evinrude 50 HP Bogs at WOT - MarineEngine

motor bogs down at full throttle Page: 1 - iboats Boating Forums ..

Evinrude motor problems

My 1988 johnson outboard 50 hp motor dies off when given full throttle

30HP JOHNSON OUTBOARD RUNS FAST ONLY WHEN IT WANTS TO!

35hp Johnson evinrude outboard not running at full potential

Need to know how to set up carb on 1985 johnson outboard. front adj on the carb got moved looking for starting point to get me close to running.

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1957 johnson outboard 10 hp fuel mixture ratio

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