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97 Johnson 130 bogging after 2k rpm

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pspagna

Member
Hey Everyone,

So I recently purchased a 17ft Seaswirl with a Johnson 130 on it. Motor idles fine but when increasing throttle past 2k rpm it seems to rev sporadically and bog down even in neutral. I have deleted the VRO and have a Johnson fuel pump on it. It also has a primer solenoid and I have a primer ball on it. New plugs as well. Could this be a carb issue and the carbs need to be redone? Everything I search also talks about power head and trigger. I am new to all this to I apologize if this should be obvious. Motor starts and runs well at idle and up to 2k rpm. Thanks so much for the help!
 
Post the actual values of a compression test.-----Does spark jump a gap of 3/8" ( 1 cm ) on each lead ?------Are wires from powerpack going to the correct coils ?---Red lever on electric primer valve in the correct position ?-----What happens when you push the key in at 2000 RPM when running boat on the water?
 
Compression - Around 120 on each cylinder
Spark - Not sure if it jumps 3/8 but put spark plug against head and have spark on all cylinders.
Wires - I will have to check on this
Red lever on primer is in the correct location. I will have to try the push key method.

Do you think carbs can play into this at all? Motor was sitting for awhile I believe.

Thanks so much!
 
Carburetor jets plug up when they have fuel in them for long periods of time.------Remove bowl drain plugs.----Any green residue on them?
 
pspagna said:
Compression - Around 120 on each cylinder
Spark - Not sure if it jumps 3/8 but put spark plug against head and have spark on all cylinders.
Wires - I will have to check on this
Red lever on primer is in the correct location. I will have to try the push key method.

Do you think carbs can play into this at all? Motor was sitting for awhile I believe.

Thanks so much!
Click to expand...
A spark plug against the block doesn't tell the whole story. You need an adjustable air-gap spark tester so you can create a 3/8" wide gap. Pull all the plugs and observe each plug lead one at a time with the gap tester while cranking. This method has been the go-to test for spark on Johnson/Evinrude outboards for decades.

Yes, if an engine sets for a long time, especially with ethanol containing fuel, you can sludgy gunk that forms in the bowl. Do as Racer said and check the fuel chambers for deposits. If you find any deposits you'll want to run through all the carburetors to clean them well and be sure to check each chamber for flatness on the gasket surface. These plastic fuel chambers are bad about warping and the only permanent solution is to replace them.

Also, do not believe anything the previous owner told you and confirm everything for yourself. Step #1 is to replace the water pump with an OEM kit, not one of those cheap deals off Ebay. Water pump kit part #5001594 will do the trick. A weak or failed water pump is one of the quickest ways to kill a newly purchased outboard.
 
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