Miss firing

Started by Ren-dog, Feb 25 2012 02:53 PM

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18 replies to this topic

#1 Ren-dog

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Posted 25 February 2012 - 02:53 PM

My Gen2 RX (EJ25D) is miss firing, mostly noticeable <3000rpm.

I suspect its the spark plugs or leads because i can smell un-burnt fuel heating up in the exhaust...

Anyway my question is what type of plugs should i get, and what part number/model etc? (cant trust the stores in this town)

Also any leads that are worth buying?

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#2 alexGT

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Posted 25 February 2012 - 03:17 PM

top gun leads
NGK platinum plugs - PFR6B-11

MY07 GT spec B

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#3 Adam

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Posted 25 February 2012 - 03:19 PM

On a budget.

Buy standard leads. And buy normal spark plugs

You will be looking at $200+ for what Alex has suggested. (I know because I've got them)

You can also test the leads and coil with a multimeter.

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#4 alexGT

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Posted 25 February 2012 - 04:19 PM

NGK Laser Platinum Spark Plugs x 4 - PFR6B-11
Performance spark plug lead set Subaru Impreza WRX Libe...

easy done

MY07 GT spec B

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#5 Adam

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Posted 25 February 2012 - 04:21 PM

Shit I got ripped!

And schooled by alexxxxxxxxx!

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#6 alexGT

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Posted 25 February 2012 - 04:24 PM

and that was only quick ebay searching. part numbers are your friend, use these and google / ebay / other online stores and end up with easy bargains.

i always go to manufacturers catalogues first rather than trying keyword/year models etc.

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#7 Adam

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Posted 25 February 2012 - 04:26 PM

Thanks for the tips mate!

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#8 Xon

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Posted 25 February 2012 - 09:09 PM

Personally I used regular spark plugs on the EJ25D. Sure, you have to change them more often, but I really don't feel like that motor deserves platinum.

I would have gone to the kitchen, collected a brown bag, dropped my dacks, pinched off a loaf in said bag, done up dacks, stickytaped bag, placed bag in envelope, and mailed it right to your face for being such a tool.

It's ok, sometimes when we herp, we also derp.

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#9 B4TT

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Posted 25 February 2012 - 09:51 PM

Either or haha.. nothing wrong with What Xon has suggested, Personally for me I would go with exactly what Alex has suggested but yeah do what the budget allows.

Hope this is the issue and it is sorted quickly for you Renny Dawg.

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#10 Ren-dog

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Posted 26 February 2012 - 01:39 AM

Cheers guys! will order them next pay. Thanks for links Alex!

Anything i replace on the car will be with quality parts, so i know its good for a while.

It will be ok for a few weeks, just got the nack of driving without massive missing, seams ok as long as i dont try to climb a hill in 4th at 50 lol.
Fairly intermittent.

Thanks!

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#11 RX25SE

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Posted 26 February 2012 - 08:48 AM

Ignition breakdown under load is usually faulty leads or coils.

h.t.helps

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#12 Ren-dog

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Posted 26 February 2012 - 10:52 AM

Well i found the problem...
Posted Image

The

'ing connector has snapped off inside the coil pack.

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#13 B4TT

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Posted 26 February 2012 - 11:04 AM

Dr Jase diagnoses correctly again!

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#14 Ren-dog

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Posted 26 February 2012 - 11:10 AM

I suspected the ignition system in general lol.

Glad i know what it is tho. I actually couldn't get the spark plug out...

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#15 12.SLOW

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Posted 26 February 2012 - 01:42 PM

its hard to pull the plugs out on subarus due to way engine is layed out stupid spot

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#16 B4TT

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Posted 26 February 2012 - 04:32 PM

Yeah on the DOHC models... I just remove the washer bottle on one side and the air filter box on the other, gives way more room to move (I am talking on the TT's)