335 Fuel Smell

stelvio

Lurker
Nov 5, 2016
18
6
0
Arizona
Hi guys,

I recently bought a 335 n54 and while I was changing the brakes I smelled fuel from the rear left wheel well. I took the liner off and found the smell coming from up top from a little hole where some wires go into and there's also some sort of sensor there. Anyone have any experience with this?

Also, fun fact, car misfires/stutters at WOT at higher rpm which triggers CEL and will continue to sound like a subaru until turned off.
 
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stelvio

Lurker
Nov 5, 2016
18
6
0
Arizona
UPDATE:
Removed rear bench & opened the access to fuel tank and found the fuel filter cracked.
18699946_212723555906063_7783574695930959366_n.jpg

It seems the source of the fuel smell has been found. I tried wiping it but it continues to leak even after car is off. Haven't tried running car while looking at this though.

Suggestions?
 
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Bmac

Specialist
Nov 8, 2016
78
34
0
Great White North
That's the top of the low pressure fuel pump and it looks like the lock ring that seals the fuel pump is not seated correctly, but it might just be the photo. You may need to borrow, buy or make a lock ring removal tool to take that off and re-seat it correctly.
 

stelvio

Lurker
Nov 5, 2016
18
6
0
Arizona
That's the top of the low pressure fuel pump and it looks like the lock ring that seals the fuel pump is not seated correctly, but it might just be the photo. You may need to borrow, buy or make a lock ring removal tool to take that off and re-seat it correctly.

Here is a DIY for the lock ring tool if that is what you needed:

https://bmw.spoolstreet.com/documents/fuel-pump-lock-ring-tool-diy.27/

Thanks to you both! ordered fuel filter & have new sparkplugs. We'll see what happens!
 

doublespaces

Administrator
Oct 18, 2016
9,248
4,259
0
AZ
Ride
2009 E93 335i
Yeah the alarm retrofit is really easy for the convertible since its basically just a hood switch and the siren in that wheel well. For coupes and sedans there is also an ultrasonic sensor in the rear(?) overhead cabin light. There was a very short window where the alarm was optional and also prewired, ended with early build 2009 cars I believe. I did a write up here:

https://bmw.spoolstreet.com/threads/e93-alarm-retrofit.1445/

I love having the accoustic beeps. No more wondering if my car locked or not.
 

stelvio

Lurker
Nov 5, 2016
18
6
0
Arizona
Yeah the alarm retrofit is really easy for the convertible since its basically just a hood switch and the siren in that wheel well. For coupes and sedans there is also an ultrasonic sensor in the rear(?) overhead cabin light. There was a very short window where the alarm was optional and also prewired, ended with early build 2009 cars I believe. I did a write up here:

https://bmw.spoolstreet.com/threads/e93-alarm-retrofit.1445/

I love having the accoustic beeps. No more wondering if my car locked or not.

I read this, very interesting.

Also, UPDATE:

So I decided to change the sparkplugs w/ the proper Bosch ZGR6STE2 ones.
When I pulled the coils I saw that the sparkplugs in place were not 12-point, but NGK PLZKAR6A-11 hex plugs [usually used on nissan sentras? LOL]...so I automatically knew I had to find my funderwear because this was going to be a fun day.

For some reason I just couldn't find a socket to grab and undo these plugs so I bought a bunch [I have a stack of sockets I have to return tomorrow to Autozone] but they did have a 14mm 12-point thinwall sparkplug socket w/ rubber insert for like $6.99 or so [I removed the rubber insert otherwise it was glued to the plug]. As I was trying to remove the plug from cylinder #1 I noticed the coil couldn't be pushed completely down and when I removed the coil I saw that the sparkplug was loose. My heart dropped a little.

Sure enough, one of the threads in the head seemed to be cross threaded or something. Back to autozone to see if they have helicoil for 12x1.25...they obviously didn't. Got home and ordered the Time-Serts sparkplug kit from Amazon along w/ 22mm inserts.

I then went back outside and decided to inspect the other 5 plugs and change them, which went smooth. Then I got an idea: I took my drill and with an adapter I put it on the slowest speed and attempted to tighten the plug while pushing on it gently and holding the drill very still. It spun a little aimlessly but it ended up catching on the threads!! Once it caught a little I hand-tightened it accordingly [17ftlbs according to the box the plugs came in] and went out for a test drive.

No more sputtering, stuttering, misfires, etc etc. Car runs smooth at WOT throughout the rev-range. I would like to take a moment now and thank Jesus for not letting this become an expense in the thousands
biggrin.gif
Also, the clown who previously owned the car...
 

doublespaces

Administrator
Oct 18, 2016
9,248
4,259
0
AZ
Ride
2009 E93 335i
So it sounds like the head is stripped out a bit? That sucks. Just hope you never have to change the plugs :D
 

stelvio

Lurker
Nov 5, 2016
18
6
0
Arizona
So it sounds like the head is stripped out a bit? That sucks. Just hope you never have to change the plugs :D

Yeah I guess the clown before didn't have the proper socket and threaded at an angle with the force of Hercules until something snapped. Worst case I would put in time-serts. Not that big of a deal compared to removing head
 

Jsherry20

Sergeant
Dec 21, 2016
313
47
0
I'm looking to install a wally 450 into my car, I'm definitely going to look into this on my vehicle. the car throws a DTML code and I really don't know why maybe this is related.