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Old 03-26-2004, 03:14 AM   #1
squeeks
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Default Problems with Magnecor Ignition Cables??

I just installed a set of KV85 ignition cables on my 01RS EJ25, and I like them... for the first day.

Then, today, all of the sudden when Im on the freeway my engine starts to stutter when I push the throttle.
I pull over and pop the hood... Cylinder #2 and #4 cables have popped OFF of the spark plugs!! They're just laying there loose in the plug inlets! So, I pop them back in, making absolute sure they are as snug as possible, but no luck, they come off again in like 5 minutes! (and again 2 MORE times on the way home)

Anyone else had this problem? Or, can you tell me what it is?

Is it the cables?
Is it the plugs?

So, I waited for the car to cool down and put the stock wires back in. That was $100 well spent

Any help would be appreciated.

Thanks
-greg
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Old 03-26-2004, 03:51 AM   #2
eagle98ak
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I have them two but have never had a problem like that. I am running denso iridiums.
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Old 03-26-2004, 04:06 AM   #3
speed_freak27
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I have read quite a few posts about this happening. I just put some on 2 weeks ago and havne't had a problem with them yet. There is also another local guy with them and hasn't had a problem either. I've got ngk plugs in my car.
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Old 03-26-2004, 11:23 AM   #4
Subie Gal
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yep i have read about this occurring a LOT.


I run OE and am

Jamie
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Old 03-26-2004, 12:04 PM   #5
Machine Age Victim
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http://forums.nasioc.com/forums/show...ht=popping+off

I switched to Iridiums too, and hasn't happened since

make sure your plugs are in tight, this will also cause them to pop off

(btw I had to switch my ignition wires because my OE broke at the boot as was arching around the outside to the head)
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Old 03-26-2004, 12:05 PM   #6
jeffg
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This thread seems to pop up every spring.

The problem is when Magnecor molded their spark plug boots they used a JDM Denso spark plug in the engine. These plugs are just slightly longer than the actual spec should be. When you run a regular plug the boots dont fit far enough into the spark plug well, and therefore pop off.

What you can do is trim the spark plug boot right at the top. There is a section shaped like a cone that is supposed to seal the spark plug well fro water. If you take a bit off the cone, it will move further into the well and click onto the spark plug correctly.

Hope that helps.

J
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Old 03-26-2004, 03:27 PM   #7
squeeks
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Wow, thanks for the help guys, I didn't know this was such a common problem. I'll try to get in there after work tonight and fix the wires. I also read, in the thread that Machine Age Victim left a link to, that you could take a pair of needle nose pliers and pull on the terminal connector.
Will that work also, or would I be better off just trimming the boot to avoid breaking the connection to the terminal?

BTW: I am running NGK Copper plugs

Thanks!
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Old 03-26-2004, 05:26 PM   #8
00RScoupe
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Had them on my RS for about 4 months and no problems yet. I installed NGK coppers at the same time. Mine fit well and the boot fit well over the spark plug hole.

If it were me I would just trim the boot and not mess with pulling the connector. It seems easy to pull it too far and maybe pull the connector off the wire.
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Old 03-26-2004, 06:13 PM   #9
Machine Age Victim
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yes trim, pull out a plug and use it as a template
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Old 03-26-2004, 06:35 PM   #10
sidewayz
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or use the correct plug

check this post that I made a loong time ago about these
http://forums.nasioc.com/forums/show...hreadid=311058
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Old 03-26-2004, 10:24 PM   #11
obyone
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Quote:
Originally posted by jeffg
This thread seems to pop up every spring.

The problem is when Magnecor molded their spark plug boots they used a JDM Denso spark plug in the engine. These plugs are just slightly longer than the actual spec should be. When you run a regular plug the boots dont fit far enough into the spark plug well, and therefore pop off.

What you can do is trim the spark plug boot right at the top. There is a section shaped like a cone that is supposed to seal the spark plug well fro water. If you take a bit off the cone, it will move further into the well and click onto the spark plug correctly.

Hope that helps.

J

That cant be right as the Magnecors use STOCK boots.
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Old 03-27-2004, 05:57 AM   #12
squeeks
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Quote:
Originally posted by obyone
That cant be right as the Magnecors use STOCK boots.
Yeah I noticed that also, the same Delphi boots as the stock wires.

But they can't be EXACTLY the same or ther wouldn't be a problem, cuz my stock wires work fine.

Where's a good place to get Denso Iridiums? How long do they last? Do they fire as well as NGK V-Powers?

Thanks again!
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Old 03-27-2004, 09:12 AM   #13
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Quote:
Originally posted by squeeks
Yeah I noticed that also, the same Delphi boots as the stock wires.

But they can't be EXACTLY the same or ther wouldn't be a problem, cuz my stock wires work fine.

Where's a good place to get Denso Iridiums? How long do they last? Do they fire as well as NGK V-Powers?

Thanks again!
In either case, something funky's going on with them. I know my Magnecores poped out at first but stayed put after a few weeks of meddling.

BTW...I feel Iridium's are a waste of money. They may last longer than Copper's but they are like what....8 times more expensive? Just buy NGK V-powAs and change them more often. Copper is a better conductor of electricity anyhow.
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Old 03-27-2004, 09:21 AM   #14
sidewayz
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ok. I'll post this again.

Ok fellas..I figured out the "falling off" problem, bear with me, this is gonna get confusing.
Well.the over all length of a normal "stock" spark plug, wether it be a Champion, Denso, NGK, Autolite etc... from the taper seat to the top nut tip of the spark plug is just about 53mm.
with the stock wires these plugs fit with no problems.
A Magnecor wire is actually shorter from the clip that plugs onto the spark plug to the water seal that meets with the top of the valve cover , compared to the stock wire. Therefore the stock "short" plugs can't engage properly with the "shorter" Magnecors. The water seal is stopping the wire from engaging with the plug. You could "trim" the water seal a bit to fit inside the valve cover BUT, you run the risk of exposing the plug to moisture.
A Denso Iridium plug has a 55mm length from the taper seat to the top nut tip. With this design the Magnecor wires will fit correctly.
Now, here it gets confusing.stay with me.
Before 1989 most Japanese vehicles have plugs that which exceeded ISO length standards (55mm plugs)
after 1989 Japanese manufacturers installed plugs conform to ISO length standards (53mm plugs)
Bosch supplies there plugs (to certain applications) with a longer top nut. 12.5mm compared to 10mm.
It seems that the Magnecor wires do not conform to ISO standards and that they are using the "old" measurement.
so.................in order to use the Magnecor wires correctly. You need a plug that has a longer length top nut than 10mm.
Well, my solution to this stupid problem is taking a Bosch 12.5mm top nut and mounting it onto a plug of your choice , providing that the top nut on YOUR plug is removable.Or use a plug (such as a Denso Iridium) with a length of 55mm. With that done, my wires seat properly and engage properly. Understand ?? Good
Thanks for your time and I hope this helps some people.
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Old 03-27-2004, 11:26 AM   #15
moogoob
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never once ran into this problem with my set
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Old 03-29-2004, 04:47 PM   #16
obyone
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Still odd...My magnecors are properly seated (the don't pop anymore) but they stick out about a quarter of an inch.
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Old 03-29-2004, 04:57 PM   #17
Machine Age Victim
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Quote:
Originally posted by obyone
Still odd...My magnecors are properly seated (the don't pop anymore) but they stick out about a quarter of an inch.
a couple of mine do too, as long as the seal is made then it shouldn't be a problem, might want to use electrical tape around the inside of the water seal

I still think this should be fixed from Magnecore's end
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