April 5th, 2024, 12:47 PM | #1 |
ninjette.org member
Name: rudy
Location: north carolina
Join Date: Mar 2024 Motorcycle(s): ninja ex250f Posts: 27
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sparks sometimes and has weak spark (solved)
so i fixed the issue regarding it not having any spark at all, replaced the pulsar coil but now its pointed out another issue both plugs and ignition coils will spark but only sometimes and it appears to be pretty weak, does this point towards faulty ignition coils or something else i should be looking for?
editproblem solved by replacing the ignition coils) Last futzed with by unionjack; April 20th, 2024 at 07:17 AM. |
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April 5th, 2024, 01:52 PM | #2 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
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What is the battery voltage while you're cranking? My guess is it's dropping a lot under load.
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April 5th, 2024, 02:16 PM | #3 |
ninjette.org member
Name: rudy
Location: north carolina
Join Date: Mar 2024 Motorcycle(s): ninja ex250f Posts: 27
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i charged it up to about 12.3 volts but wouldn t be suprised if it was dropping after some cranks its a fairly new battery
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April 5th, 2024, 07:32 PM | #4 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
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I'm asking what the battery voltage is during cranking. That can tell us if your weak spark is due to low voltage.
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April 6th, 2024, 04:49 AM | #5 |
ninjette.org member
Name: rudy
Location: north carolina
Join Date: Mar 2024 Motorcycle(s): ninja ex250f Posts: 27
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i can absolutely check that I haven't actually tried that yet, I took off the ignition coils and found that the "intermittent" ness possibly could be because the contacts in the wire is pretty messed up and would only read with a multimeter in certain positions and on top of that the resistance of the primary windings was way off, ordered 2 oem replacements off ebay, ill check the voltage while cranking today though
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April 6th, 2024, 12:44 PM | #6 |
ninjette.org member
Name: rudy
Location: north carolina
Join Date: Mar 2024 Motorcycle(s): ninja ex250f Posts: 27
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April 6th, 2024, 02:17 PM | #7 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
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Edit: deleted wrong information!
Last futzed with by Triple Jim; April 6th, 2024 at 03:43 PM. |
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April 6th, 2024, 03:06 PM | #8 |
ninjette.org member
Name: rudy
Location: north carolina
Join Date: Mar 2024 Motorcycle(s): ninja ex250f Posts: 27
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as far as I got in the manual I was sent on this forum my primaries read 5.5 as in the two standoff posts being connected by a multimeter not to the actual spark cable
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April 6th, 2024, 03:44 PM | #9 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
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Sorry, I had a brain fart! You're right. I'll fix the post for future searchers. I had tube amplifier output transformers on my mind.
I was the one who posted the manual supplement for you. |
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April 6th, 2024, 05:36 PM | #10 | |
ninjette.org member
Name: rudy
Location: north carolina
Join Date: Mar 2024 Motorcycle(s): ninja ex250f Posts: 27
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Quote:
your all good lol I was super confused, it was out of wack as far as the manual readings so I have two oem ones getting here Tuesday but have just continued testing and working on this big puzzle regardless |
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April 8th, 2024, 01:05 PM | #11 |
ninjette.org member
Name: rudy
Location: north carolina
Join Date: Mar 2024 Motorcycle(s): ninja ex250f Posts: 27
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just replaced the ignition coils, solved the issue have strong spark all the way up to the actual plugs now
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April 8th, 2024, 01:12 PM | #12 |
Guy Who Enjoys Riding
Name: Jim
Location: North Carolina
Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
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April 8th, 2024, 04:03 PM | #13 |
ninjette.org member
Name: rudy
Location: north carolina
Join Date: Mar 2024 Motorcycle(s): ninja ex250f Posts: 27
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so the actual coils themselves looked identical same branding and all HOWEVER the actual spark plug wire looked like a replacement, even the rubber gasket piece that covers up the head didn't really fit or cover right and could be popped off of the wire very easily, so my guess is probably stock coil, ghetto repair job on the actual wires
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