|
|
SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS! |
Post Reply |
|
Thread Tools | Search this Thread |
07-24-2016, 12:27 PM | #1 |
Brigadier General
2936
Rep 3,286
Posts
Drives: 2002 M5;2007 M Coupe;2020 M2C
Join Date: Jul 2011
Location: Tucson
|
Z4M spark plug replacement interval
I don't drive the M coupe that much so this many years later it has just rolled over 30K miles. I did the valve adjustment and changed all the fluids. Does anyone have an opinion on when to change the spark plugs? I know it is done with the "official" Inspection II, which usually is around 60K. Mike Miller doesn't provide any S54 specific advice in his handbook. Is it a waste of money to replace them now? Car is not tracked.
Thanks in advance.
__________________
2020 F87 M2C Hockenheim Silver/MT
2002 E39 M5 Sterling Gray/Caramel 2007 E86 Z4M Coupe Silver Gray/Black 2021 Kia Telluride (hauler) |
07-24-2016, 03:52 PM | #2 |
Colonel
1133
Rep 2,866
Posts
Drives: Anything
Join Date: Apr 2010
Location: SoCal
|
I had replaced them during each of my valve adjustments simply because they're getting taking out during that time anyway. I just had my inspection II (2nd valve adjustments) done at 45K miles, so the car is on it's 3rd set of spark plugs. It's an overkill, I know; but the extra $50 spent on spark plugs gives me a tiny peace of mind and hopefully will somewhat prevent those pesky coil packs from premature failures.
|
Appreciate
1
|
07-24-2016, 06:04 PM | #3 |
Banned
191
Rep 453
Posts
Drives: 2007 Z4M Coupe
Join Date: Dec 2015
Location: WY
|
You could always pull them out and inspect them yourselves and decide. The condition of the plugs will probably depend on a lot of factors. I'm no mechanic but did mine myself at 50k miles. Really simple and can be done with basic tools and a torque wrench.
|
Appreciate
1
|
07-24-2016, 07:12 PM | #4 | |
Brigadier General
2936
Rep 3,286
Posts
Drives: 2002 M5;2007 M Coupe;2020 M2C
Join Date: Jul 2011
Location: Tucson
|
Quote:
__________________
2020 F87 M2C Hockenheim Silver/MT
2002 E39 M5 Sterling Gray/Caramel 2007 E86 Z4M Coupe Silver Gray/Black 2021 Kia Telluride (hauler) |
|
Appreciate
0
|
07-25-2016, 12:31 PM | #5 |
My other car is on Mars
636
Rep 3,124
Posts |
I replace them at each valve adjustment, since I have to take them out anyways and they use crush washer seals.
I've also switch to the iridiums, which last even longer, and you can get them cheap on Amazon.
__________________
Warning: May contain traces of nuts.
|
Appreciate
1
mrsuper25.50 |
01-14-2020, 08:20 AM | #6 |
Registered
0
Rep 1
Posts |
Misfire, start with plugs?
2013 Z4 e89 47,000 miles. When accelerating hard from 0mph (pedal to floor) I get a misfire around 60mph and the car goes into slow mode. Code reader shows a misfire. I'm thinking that I should start by replacing the spark plugs. If that doesn't take care of it, replace coil packs next?
First post here. Thanks for your help dbz4 |
Appreciate
0
|
01-14-2020, 06:56 PM | #7 | |
Captain
253
Rep 775
Posts |
Quote:
|
|
Appreciate
0
|
01-14-2020, 06:58 PM | #8 |
Captain
253
Rep 775
Posts |
They actually don't unless you're talking about racing plugs. Non-OE and non-racing Iridium plugs still have nickel grounds, so they still wear fairly quickly.
|
Appreciate
0
|
01-14-2020, 08:51 PM | #9 |
///Multiple
2992
Rep 4,243
Posts
Drives: M4 Coupe | M3 | Z4M Roadster
Join Date: Jan 2011
Location: San Diego, CA
iTrader: (1)
Garage List 2006 BMW Z4 M Roadster [8.81]
2016 BMW M4 Coupe ( ... [10.00] 2018 BMW M3 (Euro D ... [0.00] 2011 BMW 335is Coup ... [10.00] |
I wondered that myself. When I bought my 2006 M Roadster in 2012 at ~32,000 miles, the Inspection I hadn't been done so I did it myself, with the help of a friend with an E46 M3 who had a shim kit. I don't recall removing any spark plugs, particularly because if I had I would have had six more holes to block with shop towels.
__________________
The Coupe: 2016 M4 | Sakhir Orange | Black Full Merino Leather | CF Trim | M-DCT | More | ED 5/13/16
The Sedan: 2018 M3 | San Marino Blue | Black Full Merino Leather | CF Trim | M-DCT | ZCP | ED 7/18/18 The Roadster: 2006 Z4 | Interlagos Blue | Black Extended Nappa Leather | Carbon Leather Trim | Purchased 7/19/12 |
Appreciate
0
|
01-15-2020, 01:21 PM | #10 |
Colonel
1133
Rep 2,866
Posts
Drives: Anything
Join Date: Apr 2010
Location: SoCal
|
Removing the spark plugs makes it easier to rotate the crankshaft as you move through the cylinders (no compression).
Last edited by XMetal; 01-15-2020 at 01:27 PM.. |
Appreciate
0
|
01-15-2020, 04:47 PM | #11 |
Captain
253
Rep 775
Posts |
|
Appreciate
0
|
01-16-2020, 06:12 AM | #12 |
Private First Class
16
Rep 134
Posts |
I had my inspection one done at 30000 miles in the dealer said that I did not need a valve adjustment. I looked in the manual and could not find the requirements for the interval. I see some evidence that this is really needed until 60,000 miles.
I never track my car and rarely drive it hard. How do I know when I need a valve adjustment? |
Appreciate
0
|
01-16-2020, 08:38 AM | #13 |
Colonel
187
Rep 2,138
Posts
Drives: Me
Join Date: Oct 2007
Location: Virginia Beach
|
Your dealer is wrong about not needing a valve adjustment. He has no way to tell.
You have to go through the process of measuring each valve shim (clearance) to determine if you need to replace/substitute for a new shim. The dealer can say no valve shims needed changed after doing the 'valve adjustment', but you have to go through the process. |
Appreciate
0
|
01-18-2020, 06:46 AM | #14 | |
Colonel
886
Rep 2,720
Posts |
Quote:
My bmw mechanic friend (dealership 25+ years exp) told me by hearing the engine sound that I don't need it. I also have a local Bmw shop with very experienced owner/mechanic...he told hearing the engine sound at 30k miles that I don't need it. I tracked my car for few times and it's been good. Now I will get it checked at 40k miles oil change in spring. |
|
Appreciate
0
|
01-18-2020, 11:33 AM | #15 | |
Captain
253
Rep 775
Posts |
Quote:
Best is to just get a set of feeler gauges and check yourself. |
|
Appreciate
0
|
01-18-2020, 04:48 PM | #16 | ||
Colonel
886
Rep 2,720
Posts |
Quote:
Thanks |
||
Appreciate
0
|
01-18-2020, 07:05 PM | #17 | |||
Colonel
1133
Rep 2,866
Posts
Drives: Anything
Join Date: Apr 2010
Location: SoCal
|
Quote:
__________________
|
|||
Appreciate
1
gds52886.00 |
01-20-2020, 04:59 PM | #18 |
Captain
253
Rep 775
Posts |
It's a little tedious, but not technically difficult IMO. I've done the last 100k miles' worth of valve adjusments on my car and never found the job to be particularly difficult. Changing the 6th cylinder exhaust shims can be a bit annoying, but I don't think that's as bad on the Z4M vs the E46 M3.
|
Appreciate
1
gds52886.00 |
Post Reply |
Bookmarks |
|
|