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Change coils along with spark plugs
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08-30-2013, 08:40 PM | #1 |
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Change coils along with spark plugs
Think its time to change my spark plugs even though I haven't noticed any stumbling of the engine. I have 36K miles and been modded with Tune/DCI since 5k miles. What is everyone's general take on changing the coils as well? Should I be changing them along with the spark plugs or wait? I guess if coils will go shortly after the plugs, I might as well change them as well while I'm at it?
Sorry if this topic has been beaten to death, just looking for some help. Also where is the cheapest place I can get coils for the n54? Thanks in advance. |
08-30-2013, 08:44 PM | #2 |
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2007 E92 6MT SGM: MusicarNW Level 2, Procede Rev 2.5, FFTEC/Vishnu LPFP with Flexfuel Sensor and Flash, M3 Offset V701's, WaveTrac LSD, Michelin PSS, Downpipes, M3 Control Arms, TCKline D/A Suspension, LCI Tail lights, Lux AE's, ER Charge Pipe, DCI's, Mtech Front and Rear, M3 Sideskirts, HPF Stage 1 Clutch
Last edited by joec500; 08-30-2013 at 09:06 PM.. |
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08-31-2013, 12:04 PM | #3 | |
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08-31-2013, 01:13 PM | #4 |
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I would leave them unless you get a misfire. And when you get a misfire, it'll tell you which cylinder is was so you can just replace that specific one.
I've found the coils at most car part stores. Got my last one at Carquest for about 25 |
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08-31-2013, 01:18 PM | #5 |
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Thanks. Also I have a torque wrench that can't measure torque settings. How important is it that I follow the exact torque setting of 20-23nm when tightening the spark plugs? Can I just use a torque wrench to tighten it?
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08-31-2013, 02:11 PM | #6 |
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No reason to replace coils unless they are bad. A worn coil wont have any inpact on the car its just when the coil goes you need to replace it. Good idea changing the plugs at your mileage with the tune. I tuned my cat at 35k miles and had two misfires, one plug and one coil. I chaned all the plugs and just the one coil. I have a soare coil at my house so if one goes i will put that in.
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08-31-2013, 02:43 PM | #7 |
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I had one failed coil, but I also had about 65k miles on my original coils. So I figured when one went, the others were probably going to follow suite soon, so rather than get stuck on the side of the road and/or needing to limp home I opted to change all six. The inconvenience of one stranded car was not worth the 200 dollars to replace all six.
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2007 E92 6MT SGM: MusicarNW Level 2, Procede Rev 2.5, FFTEC/Vishnu LPFP with Flexfuel Sensor and Flash, M3 Offset V701's, WaveTrac LSD, Michelin PSS, Downpipes, M3 Control Arms, TCKline D/A Suspension, LCI Tail lights, Lux AE's, ER Charge Pipe, DCI's, Mtech Front and Rear, M3 Sideskirts, HPF Stage 1 Clutch
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08-31-2013, 03:22 PM | #8 |
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Thanks for all the feedback. Did you guys change the spark plug yourselves? If so, how important is it to torque it to their spec of 20-23nm? I have a torque wrench but no way of measuring how much I am torquing it.
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08-31-2013, 03:41 PM | #9 | |
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2007 E92 6MT SGM: MusicarNW Level 2, Procede Rev 2.5, FFTEC/Vishnu LPFP with Flexfuel Sensor and Flash, M3 Offset V701's, WaveTrac LSD, Michelin PSS, Downpipes, M3 Control Arms, TCKline D/A Suspension, LCI Tail lights, Lux AE's, ER Charge Pipe, DCI's, Mtech Front and Rear, M3 Sideskirts, HPF Stage 1 Clutch
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08-31-2013, 04:58 PM | #10 |
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No need to change coils unless there is a failed one. Plugs, I personally don't use a torque wrench. I put two fingers on the ratchet and make them snug. Be sure to get a sparking socket, we have the BMS ones if you need it.
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08-31-2013, 05:15 PM | #11 |
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Sorry I'm not mechanically savy, you mean you try to tighten the spark plug by using two fingers and turning the socket correct?
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08-31-2013, 05:23 PM | #12 |
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As I mentioned in my response. As tight as you can get them with only two finders on the wrench.
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2007 E92 6MT SGM: MusicarNW Level 2, Procede Rev 2.5, FFTEC/Vishnu LPFP with Flexfuel Sensor and Flash, M3 Offset V701's, WaveTrac LSD, Michelin PSS, Downpipes, M3 Control Arms, TCKline D/A Suspension, LCI Tail lights, Lux AE's, ER Charge Pipe, DCI's, Mtech Front and Rear, M3 Sideskirts, HPF Stage 1 Clutch
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08-31-2013, 05:28 PM | #13 | |
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Funny I didn't even notice your response. Great minds think a like lol |
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08-31-2013, 05:37 PM | #14 |
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Something I learned from Rigging boats. People would crank on the bolts which would then crack the fiberglass/carbon hulls.
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2007 E92 6MT SGM: MusicarNW Level 2, Procede Rev 2.5, FFTEC/Vishnu LPFP with Flexfuel Sensor and Flash, M3 Offset V701's, WaveTrac LSD, Michelin PSS, Downpipes, M3 Control Arms, TCKline D/A Suspension, LCI Tail lights, Lux AE's, ER Charge Pipe, DCI's, Mtech Front and Rear, M3 Sideskirts, HPF Stage 1 Clutch
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08-31-2013, 10:41 PM | #15 |
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I would not think you would need to change the coils unless you get a misfire or perhaps you get to the 125-150k mark and you change them proactively along with a spark plug change.
Bav auto claims to have coils that will give you better MPG and more horse power. They run over $300.00. You can get an OEM set of Bosch on eBay for around 235.00. As far as plugs go, you want to use anti seize paste and torque them down to spec. This way in 45k you can get them out with no issues. |
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09-01-2013, 09:55 AM | #16 | ||
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09-07-2013, 12:04 PM | #17 |
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Is anti-seize a must do when installing spark plugs? I heard you have to apply spark plug grease so the coil doesn't get stuck on the spark plug. Does anti-seize do the samething or its for something else?
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09-07-2013, 12:20 PM | #19 | |
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What does this even mean - you have a torque wrench that can't measure torque - that can only mean 1 of 2 things, you don't have a torque wrench or you have a broken torque wrench!
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09-07-2013, 04:43 PM | #20 | |
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Sorry, I have a ratchet no torque wrench. Thinking about using the 2 finger rule |
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09-14-2013, 12:08 PM | #22 |
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I have 64k on my car and I believe the plugs were never changed since I dont see it in my service records from the previous owners. My car has started to hiccup and misfire more and more often, I guess it is time to do plugs!
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