Have you seen this crack before ?

nasu · 09-30-2017, 12:46 PM

Hi guys,

Having misfire cylinder 4 so I said ok let's try replacing all plugs and coils. Didn't get to touch them and I see oil, not good... looking a bit more the plastic housing is cracked, not sure how that really happened, I own the car for less than 10,000 KMs and I bought it with 80,000KM. I am guessing a bad mechanic probably was trying to do work on the injector and somehow cracked it or I don't know..

Anyways, not sure how long this is like that for.... I am planning to get the coils and plugs replaced either way and now looking to buy that part new or used.

Have you seen engine valve covers cracked like this ?

Thank you

Welcome to NBA Jam · 09-30-2017, 01:13 PM

Not like this specifically, but I have seen them crack before. It's really unfortunate, and is a good example of why plastic valve covers are no fun. You could probably do a temporary repair with JB weld or similar, but I'd get a new cover soon.

nasu · 09-30-2017, 01:34 PM

I will actually try to see how it lasts with a JB weld or similar products first, as it will be quite some work to remove that cover... thanks a lot

weehe126 · 09-30-2017, 01:38 PM

Just replace it, dont mess with JB weld. It's a 3 hour job and really not that difficult for a beginner DIY.

BB_cuda · 09-30-2017, 01:42 PM

I've had JB weld hold on a higher pressure situation. It was a pin hole on a metal thermostat housing. Different make. Worth a try but it will look ghetto. You will need to sand/prep surface and get oil off area to get it to stick. There is little pressure so it should work. Actually, my M57 diesel is under slight vacuum in this area due to breather feeding into the turbo inlet. Not sure what engine you have in these pics as I'm not familiar with N52,N54 nor N55 engines. Good luck.

Donutz · 09-30-2017, 05:08 PM

Almost everyone with an N54 has seen that crack before

Eddien123 · 09-30-2017, 05:13 PM

It?s definitely annoying but it?s a straight forward job. Took me 4 hours total or something and I

nasu · 09-30-2017, 10:48 PM

will try JB Weld and other solutions first...just for a crack like this I dont feel like working 4 hours plus hundreds on that plastic cover which in the end will crack again I am guessing.

09-30-2017, 12:46 PM	#1
nasu Private 10 Rep 54 Posts Drives: '11 335is Cabrio Join Date: Sep 2016 Location: Toronto iTrader: (0)	Have you seen this crack before ? Hi guys, Having misfire cylinder 4 so I said ok let's try replacing all plugs and coils. Didn't get to touch them and I see oil, not good... looking a bit more the plastic housing is cracked, not sure how that really happened, I own the car for less than 10,000 KMs and I bought it with 80,000KM. I am guessing a bad mechanic probably was trying to do work on the injector and somehow cracked it or I don't know.. Anyways, not sure how long this is like that for.... I am planning to get the coils and plugs replaced either way and now looking to buy that part new or used. Have you seen engine valve covers cracked like this ? Thank you Attached Images
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09-30-2017, 01:13 PM	#2
Welcome to NBA Jam Is it the shoes!? 3884 Rep 5,112 Posts Drives: (Sold) 2011 E92 335i ZMP 6MT Join Date: Mar 2014 Location: USA iTrader: (1)	Not like this specifically, but I have seen them crack before. It's really unfortunate, and is a good example of why plastic valve covers are no fun. You could probably do a temporary repair with JB weld or similar, but I'd get a new cover soon.
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09-30-2017, 01:34 PM	#3
nasu Private 10 Rep 54 Posts Drives: '11 335is Cabrio Join Date: Sep 2016 Location: Toronto iTrader: (0)	I will actually try to see how it lasts with a JB weld or similar products first, as it will be quite some work to remove that cover... thanks a lot
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09-30-2017, 01:38 PM	#4
weehe126 Brigadier General 1161 Rep 3,189 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	Just replace it, dont mess with JB weld. It's a 3 hour job and really not that difficult for a beginner DIY.
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09-30-2017, 01:42 PM	#5
BB_cuda Brigadier General 765 Rep 3,557 Posts Drives: 2011 335D Msport, 2013 X5D Join Date: Nov 2011 Location: Clear Lake, Texas iTrader: (0)	I've had JB weld hold on a higher pressure situation. It was a pin hole on a metal thermostat housing. Different make. Worth a try but it will look ghetto. You will need to sand/prep surface and get oil off area to get it to stick. There is little pressure so it should work. Actually, my M57 diesel is under slight vacuum in this area due to breather feeding into the turbo inlet. Not sure what engine you have in these pics as I'm not familiar with N52,N54 nor N55 engines. Good luck.
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09-30-2017, 05:08 PM	#6
Donutz Lieutenant 140 Rep 476 Posts Drives: 335i Join Date: Sep 2015 Location: Toronto, eh iTrader: (2)	Almost everyone with an N54 has seen that crack before
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09-30-2017, 05:13 PM	#7
Eddien123 Colonel 1858 Rep 2,554 Posts Drives: F30 335 6MT Join Date: May 2013 Location: New Jersey iTrader: (0)	It?s definitely annoying but it?s a straight forward job. Took me 4 hours total or something and I
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09-30-2017, 10:48 PM	#8
nasu Private 10 Rep 54 Posts Drives: '11 335is Cabrio Join Date: Sep 2016 Location: Toronto iTrader: (0)	will try JB Weld and other solutions first...just for a crack like this I dont feel like working 4 hours plus hundreds on that plastic cover which in the end will crack again I am guessing.
	Appreciate 0 Quote