0586323 coil specifications

[DoubleDot]

Hello everyone !
Recently got an 1998 25hp 3 cylinder J25RMECA and i think I'm having spark issues
in the service manual says that the coil P/N 584826 primary resistance should be 0.28 +- 0.05 ohm and secondary resistance my meter should show 2300 +-300 ohm.
the engine came with P/N 056323 (since P/N 584826 was replaces P/N 056323) and each coil shows primary resistance at 0.9 ohm and secondary at 253 ohm.
Ive look everywhere for 0586323 coil specifications but can cant find it anywhere .
My question for you good people at Iiboats.net is should 056323 coil read same values as 584826 coil from my service manual? or what the 0586323 coil reading should be ?
Any help will be appreciated !!!
Thank you .

 

[saltchuckmatt]

I'm sure your probably fine...have you tried other test like a spark gap measuring tool?

Has the vro been deleted on that model? If not it needs to be.

 

[DoubleDot]

Hi
Thanks for the response about the coils and yes Ive remove the oil mixing chamber - it failed at the 1st ride .
Since then the engine runs fine with lots of power but it struggle to idle -it shakes a lot and look like is running on one cylinder with no deference if I'm applying throttle or not , only kill switch stops it lol. Spark tester shows uneven spark when engine is in the shaking stage .
Ive rebuilt the carbs and fuel pumps,vac and fuel lines cheeked for leaks.
Compression around 100 on each cylinder .
Any ideas?
Ps My worries are that i need new power pack

 

[saltchuckmatt]

Hi
Thanks for the response about the coils and yes Ive remove the oil mixing chamber - it failed at the 1st ride .
Since then the engine runs fine with lots of power but it struggle to idle -it shakes a lot and look like is running on one cylinder with no deference if I'm applying throttle or not , only kill switch stops it lol. Spark tester shows uneven spark when engine is in the shaking stage .
Ive rebuilt the carbs and fuel pumps,vac and fuel lines cheeked for leaks.
Compression around 100 on each cylinder .
Any ideas?
Ps My worries are that i need new power pack

Get a spark GAP tester. Check spark for 3/8. If you still think it's spark, have you observed the timer plate while it's running? I'd pull the flywheel and examine all the components and linkages.

 

[DoubleDot]

I'm back from the camp
All spark plugs have 3/8 gap
Engine runs / idle when cold but when warm up to opt temp wont idle and the shaking occur
It seams i have week spark on top and middle cylinder . When i pull of the wire from the spark plug on those 2 cylinders( one at the time lol) engine keeps running) but when the wire is off the bottom plug engine dies .(again engine runs fine over + - 800 rpm and up when worm .
I did try switching coils around witch didn't make any deference.
Spark plug tester shows that top and middle cylinder are getting spark randomly (is not consistent) when engine is shaking .
All linkages look and work good
Flywheel off and notes that the sensor plate have some play

and i have no idea is that acceptable.
Did the stator test: did pass all the ground test
power coil test - got 26 volts (manual says 100 volts ) ohms are good,
charge coil test - got around 156 volts (manual says 300 volts) ohms are in range good.
Is it possible that engine don't get enough justice from the stator ?
Also was told by my neighbor that friend had same engine and at some point had similar problem , after changing the power pack problem was gone ...
Help please !!!

 

[DoubleDot]

I wonder if i should make another post about my engine ..maybe that would give me more response ?...

 

[racerone]

Post the actual compression values on this motor here.----How / where are the low speed mixture screws set?----Have you replaced the water pump impeller?----Tested for overheat and S.L.O.W. being activated?----Note----I own numerous of these 3 cylinder motors.

 

[DoubleDot]

Hi there
Engine have equal 100 psi on 3 cylinders ( i was told this is low compression engine ) ,it dose not over heat and SLOW is no activated.
I've changed thermostat (pn#0436195) and didn't touch impeller yet since have strong pressure from telltale.
When i got bought the engine some one before me was playing with the carbs , was running to rich - lot of oil i the lake .
I end up rebuilding the carbs and i set the mixture to what my service manual is saying witch is 9mm .
I'm able to set the idle with the carbs to just over little 1000 rpm ,anything below this number it starts missing on top and middle cylinder witch i describe in my post above . Took the engine numerous times on the lake have lost of power and no issues when cursing in defend speed .
Idle like a charm when cold but when warms up it wont idle at the lowest throttle position .