S2R and Newer 2V Air Cooled Ignition Coil Testing Specs

[EEL]

Part number is 380.015.1.1A for the ignition coils

These coils are used in everything from S2R's to 696s, 796 and 1100 Evo's

My bike is an 1100 EVO and I'm having a stuttering issue at a specific RPM. I'm addressing the fueling by replacing the fuel filter and ultrasonically cleaning the injectors but I am also looking to test the coils and spark plug wires while I'm in there.

The primary resistance across the primary coil is about 1 OHM for both coils on the bike however the secondary resistance measured from the pins to the other end where the spark plug wire attaches to the coil is SUPER high. It also differs significantly between the horizontal cylinder coil and the vertical cylinder coil. This difference is what I'm worried about the most.

Anyone know what the value should be? The factory service manual just states to plug into a DDS. This is a useless answer that server the home mechanic no purpose.

Hoping the  brain trust can shed some light. Both coils were tested off the bike with a multimeter and at the same temperature.

[BK_856er]

Sorry, can't offer any experience/advice on the coil, but how high is super high and what meter are you using?  Low and high ohms will challenge handheld meters, especially cheaper ones.

Does the 1100 EVO have an inductive pickup and is the airgap correct and sensor good?

BK

[EEL]

Its a bluepoint multimeter so its not too bad. I'm cant remember if it was kilo ohms or mega ohms that I got across the primary and secondary sides. I will have to recheck but i was getting 15.5 on one and about 11 on the other coil.

Its autocalibrating but I will check if its kiloohms

I cant comment on the inductive pickup or air gap but the issue is only happening between 4 & 5k rpm at maintenance throttle. And it seems like it happens more when its warmer.

My goal was to address fuel and spark both at the same time so I dont have to strip the bike down again to get at the components.

[Howie]

Ducati doesn't publish a spec, so best bet is measure a known good coil.  Actually, best bet if you can get your hands on an oscilloscope, is to test them dynamically increasing load on a dyno and monitoring spark output.  No dyno?  Me neither.  Pull plug wire and gradually increase gap on running bike.  Both are stress tests and more reliable than ohming the coils.  If you have a dual spark 1000 I will measure one of my coils. 

[EEL]

Unfortunately the EVO is not a dual spark. I bit the bullet and bought 2 coils on fleabay from a supposed 1100 EVo with 4k miles. Hoping I can use them as reference.

I'm trying to understand this statement better:

"Pull plug wire and gradually increase gap on running bike."

Do you mean increase the sparkplug gap? How would you do that on a running bike? Wouldnt I need to shut off the fuel? If thats the case, how would it run?

No oscilliscope here or dyno.

[koko64]

Remember the old gap testing tool? It lets you wind out the gap to gauge the moment of spark failure. They fit in line to the plug and lead.

[EEL]

Ah...I'll have to buy new cheapo plugs then. Not a big deal. I run iridium tipped NGK so you cant use the gap tool. The tips are too fragile.

I'll wait to see what the 2 coils I bought come in at for resistance. Hopefully I can weed out the rotten apple that way.

[BK_856er]

High tension spark plug wire resistance is good and no sign of cracking/damage?  Unlikely, but easy/free to test.  In the car world I've heard of folks finding pesky spark plug wire issues with at night with water misted near the wires - visual electrical show = insulation problem.  Known good spark plugs at correct gap?  Sounds like you've already been over the obvious stuff....

BK

[Howie]

What i mean by increasing gap is loosen spark plug wire gradually pull wire further (hold with insulated pliers) away, creating a gap, but not far enough so spark fails to cross gap since that can cause damage...ummm...cancel that method could cause damage.    Koko's idea is better.

High tension spark plug wire resistance is good and no sign of cracking/damage?  Unlikely, but easy/free to test.  In the car world I've heard of folks finding pesky spark plug wire issues with at night with water misted near the wires - visual electrical show = insulation problem.  Known good spark plugs at correct gap?  Sounds like you've already been over the obvious stuff....

BK

Do read here  http://www.ducatimonsterforum.org/index.php?topic=76214.0 about iridium spark plugs in your Monster.