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Author Topic:   Johnson Outboard
Clay posted 09-27-2003 12:34 PM ET (US)   Profile for Clay   Send Email to Clay  
I have a 1992 Johnson motor that will not idle properly. It runs great otherwise. I have changed the spark plugs and the fuel line filter. This did not correct the problem. Could it be the timing. If so, how do you check and set the timing. Any help will be appreciated as I am 50 miles from the nearest boat repair.
mtbadfish posted 09-27-2003 01:38 PM ET (US)     Profile for mtbadfish  Send Email to mtbadfish     
Here are the suggestions I got when experiencing the same problem with my '99 Johnson 175.

In addition to what you've already done.

Make sure the gas is good.
Check/adjust the low speed idle settings on the carbs.
Make sure all bulbs & hoses are in good shape and fittings are secure.
I also ran Techron through the motor per Bigshot's suggestion.

Everyone I talked to stressed the importance that the carbs not be set too lean, which can cause a catastrophic failure of the motor.

There is probably someone here to help with the timing question. I'd also suggest getting a service manual for the motor if you don't already have one.

Good luck.

JBCornwell posted 09-27-2003 04:40 PM ET (US)     Profile for JBCornwell  Send Email to JBCornwell     
Ahoy, Clay.

My first suggestion is that you get a Repair Manual.

It has been said that, "He who works on his outboard without a manual has a fool for a mechanic".

What you should do then depends on what '92 Johnson engine you have, but most of them should have a careful link 'n' synch (carb linkage adjustment and synchronization) procedure.

You can get some excellent advice from some pros at [url][/url]

Red sky at night. . .

gimcrack225 posted 09-27-2003 07:59 PM ET (US)     Profile for gimcrack225    
Check the fuel hoses and OMC fuel connectors ("o" rings) if you have them. Air leaks were the root of my problems.
Sal DiMercurio posted 09-29-2003 12:31 PM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
It would certainly help to know if this 1992 engine is a 2 hp or 250 hp.
I'd run some engine tuner through it before tearing into anything.
Bigshot posted 09-30-2003 03:54 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
DO NOT MESS WITH THE TIMING! Timing rarely if EVER goes out on 2 strokes. It probably needs a good carb cleaning or a synch & link(mechanic needed for that). I would try Techron in the fuel first.

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