Spark Plug install help? MD

Virge · 09-30-2014, 02:10 PM

Hi all,

My 135i has been idling very rough when cold starting the engine. Seems to run fine after its a little warm. I thought maybe the JB4 was causing the issue, but its the same when I turn it off.

After doing some research people have suggested that maybe the spark plugs are the issue. I have about 54k on the engine and so far have never had them replaced, so I'm assuming that's the problem?

Anyone have any ideas? And if they do need to be replaced is anyone in the MD area willing to help me out in replacing it?

I haven't bought replacement spark plugs yet. Any recommendations on what works best for a tuned engine?

Thanks!

Dackelone · 09-30-2014, 02:41 PM

USE spark plugs bought from a BMW dealer. Not afermarket Bosch ones.

Replacing them is easy...

135i Spark Plug replacement DIY...
http://www.1addicts.com/forums/showthread.php?t=602804

Siddy · 10-02-2014, 01:42 PM

I'm trying to replace Spark plugs on my 2009 BMW135I (60K miles). I came cross these different types & brands. Please post your reviews on the list below. I'm looking for a good balance between Performance & durability

brands: Bosch, Continental, Pulstar, E3, NGK

Type:
Platinum
Dual Platinum
Iridium
plasmacore( Pulstar)
Diamond tip ( E3)

Thanks a lot

Siddy.

Virge · 10-08-2014, 08:08 AM

So I swapped out my injectors yesterday with BMW OE ones I got from Silver Spring BMW. Two of the spark plugs (#4 and #6) had oil on the plug and the threads. Which made me think there is something more wrong than just worn out spark plugs. Either way the engine ran smooth as silk while I was driving home. So I thought all was good...

Then this morning it was beginning to have a semi-rough idle again, which disappeared after the engine warmed up. It hasn't thrown codes yet, and no hesitation in acceleration. But I'm wondering if I need walnut shell blasting or a new valve cover gasket?

I'll try and post pictures of the spark plugs when I get a chance.

mechavore884 · 10-08-2014, 11:00 AM

did you replace the ignition coils also?

Virge · 10-08-2014, 11:39 AM

No I did not, I was hoping the spark plugs would be sufficient. Is there any way I can check if its the coils?

mechavore884 · 10-08-2014, 05:31 PM

check the codes whenever you have a chance, u can check with any other coil that works really....is it dumping fuel?

Brake_L8 · 10-09-2014, 01:43 PM

Oil on the plug tips/threads is likely the valve cover gasket.

harryn · 03-18-2015, 12:49 PM

When servicing the 135i, make sure to get the 18 pack: Plugs, Coils, and Injectors for OPTIMUM performance. You really don't need to replace the injectors all the time if you send em off to Dr Injector for matching and cleaning, but usually per the shop manual, every 60K, got to do the plugs, coils, and injectors.

MightyMouseTech · 03-18-2015, 12:51 PM

If there is oil in the spark plug tubes, I would be fixing that before anything else. Fix what you know is wrong!!!! I would probably replace the coil packs that got oil damaged as well.

May be a cracked valve cover.

And I would ONLY use the plugs from the dealer. Just make sure they give you the correct ones.

Replacing the plugs is pretty straight forward. Takes me about a half hour, but I have done them now several times.

09-30-2014, 02:10 PM	#1
Virge Enlisted Member 13 Rep 40 Posts Drives: Tesla Model S Join Date: May 2008 Location: Maryland iTrader: (0)	Spark Plug install help? MD Hi all, My 135i has been idling very rough when cold starting the engine. Seems to run fine after its a little warm. I thought maybe the JB4 was causing the issue, but its the same when I turn it off. After doing some research people have suggested that maybe the spark plugs are the issue. I have about 54k on the engine and so far have never had them replaced, so I'm assuming that's the problem? Anyone have any ideas? And if they do need to be replaced is anyone in the MD area willing to help me out in replacing it? I haven't bought replacement spark plugs yet. Any recommendations on what works best for a tuned engine? Thanks! __________________ 2009 135i Blk/Blk (Sold 2020 )
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09-30-2014, 02:41 PM	#2
Dackelone European Editor 10528 Rep 22,992 Posts Drives: N54 e82 Join Date: Feb 2010 Location: Bayern, Germany iTrader: (1)	USE spark plugs bought from a BMW dealer. Not afermarket Bosch ones. Replacing them is easy... 135i Spark Plug replacement DIY... http://www.1addicts.com/forums/showthread.php?t=602804 __________________ Dackel's European Delivery Museum Guide
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10-02-2014, 01:42 PM	#3
Siddy New Member 0 Rep 6 Posts Drives: 2009 BMW 135I Join Date: Jun 2014 Location: Michigan iTrader: (0)	Replacement Spark plugs I'm trying to replace Spark plugs on my 2009 BMW135I (60K miles). I came cross these different types & brands. Please post your reviews on the list below. I'm looking for a good balance between Performance & durability brands: Bosch, Continental, Pulstar, E3, NGK Type: Platinum Dual Platinum Iridium plasmacore( Pulstar) Diamond tip ( E3) Thanks a lot Siddy. __________________ 2009-BMW135i-Manual, M package.
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10-08-2014, 08:08 AM	#4
Virge Enlisted Member 13 Rep 40 Posts Drives: Tesla Model S Join Date: May 2008 Location: Maryland iTrader: (0)	So I swapped out my injectors yesterday with BMW OE ones I got from Silver Spring BMW. Two of the spark plugs (#4 and #6) had oil on the plug and the threads. Which made me think there is something more wrong than just worn out spark plugs. Either way the engine ran smooth as silk while I was driving home. So I thought all was good... Then this morning it was beginning to have a semi-rough idle again, which disappeared after the engine warmed up. It hasn't thrown codes yet, and no hesitation in acceleration. But I'm wondering if I need walnut shell blasting or a new valve cover gasket? I'll try and post pictures of the spark plugs when I get a chance. __________________ 2009 135i Blk/Blk (Sold 2020 )
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10-08-2014, 11:00 AM	#5
mechavore884 Lieutenant 35 Rep 528 Posts Drives: the fat mobile Join Date: May 2013 Location: NOVA iTrader: (3)	did you replace the ignition coils also?
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10-08-2014, 11:39 AM	#6
Virge Enlisted Member 13 Rep 40 Posts Drives: Tesla Model S Join Date: May 2008 Location: Maryland iTrader: (0)	No I did not, I was hoping the spark plugs would be sufficient. Is there any way I can check if its the coils? __________________ 2009 135i Blk/Blk (Sold 2020 )
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10-08-2014, 05:31 PM	#7
mechavore884 Lieutenant 35 Rep 528 Posts Drives: the fat mobile Join Date: May 2013 Location: NOVA iTrader: (3)	check the codes whenever you have a chance, u can check with any other coil that works really....is it dumping fuel?
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10-09-2014, 01:43 PM	#8
Brake_L8 Ambitious But Rubbish 6 Rep 95 Posts Drives: '09 128i \| '97 M3 Join Date: Dec 2013 Location: Northern VA iTrader: (0)	Oil on the plug tips/threads is likely the valve cover gasket. __________________ Now: '09 128i/6 Sport/Premium/Cold Weather \| '97 M3/4/5 #404 TTD Then: '95 Miata \| '91 535i \| '96 328i \| '95 325i \| '13 Focus ST
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03-18-2015, 12:49 PM	#9
harryn New Member 3 Rep 10 Posts Drives: 128i M Sp, 95 M3, 94 M-Technic Join Date: Sep 2014 Location: Communist Republic of Maryland iTrader: (0)	When servicing the 135i, make sure to get the 18 pack: Plugs, Coils, and Injectors for OPTIMUM performance. You really don't need to replace the injectors all the time if you send em off to Dr Injector for matching and cleaning, but usually per the shop manual, every 60K, got to do the plugs, coils, and injectors.
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03-18-2015, 12:51 PM	#10
MightyMouseTech Major General 4338 Rep 6,196 Posts Drives: 13 135i 6MT LeMans Blue MSport Join Date: Feb 2013 Location: Ottawa, Canada iTrader: (0)	If there is oil in the spark plug tubes, I would be fixing that before anything else. Fix what you know is wrong!!!! I would probably replace the coil packs that got oil damaged as well. May be a cracked valve cover. And I would ONLY use the plugs from the dealer. Just make sure they give you the correct ones. Replacing the plugs is pretty straight forward. Takes me about a half hour, but I have done them now several times.
	Appreciate 0 Quote