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I have a 1982 9.9hp evinrude it has a ql77jc4 spark plug is it the right plug

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Etc 200 starts and runs great but it seems to me like it is loading up with fuel during takeoff. I have changed fuel filter and plugs and also have ran fuel injector cleaner through the fuel.

Hey Eric,
What is it doing exactly... is the engine missing? ..Does it do this every time you take off? (engine hot and cold?).. Was this one of the engines that require the spark plugs to be oriented with relation to the electrode location? .... (Spark plugs take a beating in a two-cycle engine)..
Johnson Evinrude Manuals 1917 2007

Jun 30, 2017 | Boating

1 Answer

How do I test ignition,points,coils ect.on 68 evinrude 9.5 sportwin?

Same way as you do on a car. You missed the spark plug wires. Look for corrosion on the rotor cap and measure the resistance of all the spark plug wires .
The high resistance ones need changing.

Oct 01, 2014 | Boating

1 Answer

Spark plug gap for 1990 evinrude express v6

The gap is 0.030
Pretty-much the gap for most of the motors in evinrude line-up during that era.

Sep 06, 2014 | Champion Spark Plugs Marine Spark Plugs...

1 Answer

50hp no spark to both plugs

first, do not use the spark plugs to test for spark. They could be fouled. (another lesson) use new plugs or a spark tester, This a HOT (powerful) ignition system so be careful. Test for spark. No then, find the black wire with the yellow tracer is the ignition kill circuit, (or it was, should still be) I would disconnect it from the ignition switch and test for spark. Do not touch this wire during or after testing, it will hurt. if you have spark, ground the wire back to the terminal to discharge. You probably have a bad key switch. more if this does not work

Jun 21, 2014 | Evinrude Johnson OMC Boating

1 Answer

Which spark plugs go in to a 1980 70hp evinrude

The original plug in that motor was a Champion L-76V. The BUHW is an exact cross reference.

Jun 24, 2012 | Boating

1 Answer

1996 Evinrude 9.9hp, 2-stroke power loss.

Checked the vent cap on the fuel tank?
Check if it runs again great after pumping fuel...
Check when it drops power if both spark plugs still sparks...
You can have a bad coil or cdi...

Jul 25, 2017 | Boating

2 Answers

What is the correct fuel/oil mix for evinrude 4hp ?

the proper mix is 50 to 1 or 16 oz to every 6 gallons,in my little boat I put 4 quarts in the 48 gal tank and its been running for 22 years,your running way to rich and your plug is probaly fouled,take it out clean it up/dump your fuel and mix it right,thats a great motor you got,I hunted with it for years,oh yeah when you get started run it till all the smoke is gone or you will have carb problems ,if you dont have them all ready,a little carb cleaner wont hurt but get it running first,or all that trash will foul you out,have a great trip bartriley1

Jan 04, 2009 | Boating

1 Answer

Evinrude 25 pk 2 stroke 2cyl outbord boatmotor

Hello enjoy42. From the information you have provided I would lean to the weak cylinder coil. Unplug the good spark plug wire & test run the engine on the weak cylinder. You could go to swapping the coils on the cylinders. Check your wiring terminals on the coils. Check with a marine dealer for the correct plug. I owned a 35 Evinrude on a Bass boat & it would out run my buddys 40 Mercury. Good Fishing.

Oct 01, 2008 | Boating

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