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Coil Pack gone out da windy

RYanR31

By RYanR31,
in Engines & Forced Induction

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RYanR31 Enthusiast

RYanR31

Posted
Posted

ok, im fairly sure one of my coil packs is failing causing a random missfire on idle and on cruising throttle. now the missfire is a little too random to just pull the plug off and see which one is causing it so i was just wondering whether like the rb20det coils you can sus out which one is screwed by taking an ohm reading on each one and if anyone has an idea on the specs. Also, are the rb20det/rb25det coils the same?

cheers

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Roy Grand Master

Roy

Posted
Posted

RB20 &c RB25 coils are interchangeable, im running 5 x rb20 with 1 x rb25 coil.

It may pay to check the resistance with a bit of temp in them, as mine when cold at room temperature all measured the same resistance...it was only after a drive and quickly ripping them out was i able to find the culprit coil

  • 1 month later...
rb25 Grand Master

rb25

Posted
Posted

just to revive an old thread, i just got my Splitfire Di coil packs today from jp. Now on the box it says for RB Series engines: RB26DETT, RB25DE, RB20DET & RB20DE. Will these be ok for my series 1 RB25DET? i rekon they will be. any help appreciated :D

-rb25

rb25 Grand Master

rb25

Posted
Posted
its not always the coils.. everybody just blames the coils when they're not sure :) its a favourite tuners response: "I don't really know what is going on so I'll just tell you its coils"

if i find out that this is the case, i will do all of my own work from that day forward. And its too late, i already own the new coils and I found out that the ones i was given are ok to use on RB25DET.

-rb25

benm Grand Master

benm

Posted
Posted
its not always the coils.. everybody just blames the coils when they're not sure :) its a favourite tuners response: "I don't really know what is going on so I'll just tell you its coils"
That's a lame excuse considering its about a 30min job to replace the coils and test.
predator Grand Master

predator

Posted
Posted

:) true, it just seems a lot seems to be about coils lately as the root of all evils. a few people have wasted a bit of money to find out its hasn't been - then again some have found it is.. so *shrug*

Guess you can only one thing at a time to eliminate things - I have an rb25 s1 igniter if you want to quickly test that sometime, although again thats only part of the whole system.

rb25 Grand Master

rb25

Posted
Posted

timing is perfect, the problem was discovered during tuning.

ok, i just put them in and went for a drive, using the old platinum plugs that would make it miss. Didn't miss a beat all the way to 7000 on 0.92bar. Very happy, fixed my problem. Also, after looking at the old coil packs, 5 of them have big white spots on both sides indicating spark blow-out if im right? Time for a re-tune with some more timing now....

-rb25

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