To Misfire or not?

[270_BMW]

Originally Posted by andrewwynn

Holy crap yes that o-ring. 22x2mm. I think that is the ID (22). You don't have to use a BMW official part of you can find a normal o-ring at a local shop.

Will not cause smell from the o-ring leak it just spills Into the tank.

If you "ran out of gas" more than once at 1/4 tank you definitely have siphon jet leak and almost certainly at that o-ring.

The gas spills from gravity to the right tank down to about 1/3 and people who knew they had the problem have been able to avoid a tow with a sharp left turn which will slosh a gallon of gas into the pump out as they were about to stall. No need to keep more than 1/3 of a tank to avoid the siphon jet issue


Sent from my iPhone using Tapatalk Pro

So.... New O ring and 4 layers of Teflon PTFE rated tape?
And a zip tie placed somewhere?

[andrewwynn]

Originally Posted by 270_BMW

So.... New O ring and 4 layers of Teflon PTFE rated tape?

And a zip tie placed somewhere?

Teflon for the unlisted seal. O-ring just new o-ring. The DIY siphon thread shows where to put the zip tie.

The Teflon might not be needed you can test for leak first like I did.


Sent from my iPhone using Tapatalk Pro

[270_BMW]

Originally Posted by andrewwynn

Teflon for the unlisted seal. O-ring just new o-ring. The DIY siphon thread shows where to put the zip tie.

The Teflon might not be needed you can test for leak first like I did.


Sent from my iPhone using Tapatalk Pro

Oh okay. I’ll have to go back and look at it.

I found a set of metric o rings with a matching size description, should work out. No one seems to have one in stock here locally. I figured I would take the preemptive measure to make sure that seal is good to go in the future.

[oldskewel]

Originally Posted by andrewwynn

Holy crap yes that o-ring. 22x2mm. I think that is the ID (22). ...

Yes, the standard for listing o-ring dimensions means that the ID is 22mm, and the cross section (circular since it's an o-ring) has a diameter of 2mm.

[andrewwynn]

22 mm = 7/8". 2mm = 0.08" very good chance to find a plumbing o-ring at home Depot that size. Also o-ring is stretchy I'm quite sure I used a 19-20mm o-ring and had to stretch it.

Sent from my iPhone using Tapatalk Pro

[270_BMW]

Update.

DISA O-Ring received.
Would PB Blaster Silicon Spray be a sufficient lubricant to make sure the seal doesn't pinch? Or would another petroleum based lubricant be better?

Crankshaft Position Sensor received.
Turns out they forgot the required O-ring... and I don't want to take a chance of the old one falling apart on me... so I've submitted a request to have the O-Ring over nighted... but it's the weekend... so you know. Lol.

Fuel Siphon Jet O-Ring... In the mail.
I had called my local Autozone and they said "Oh yeah we have an assorted metric O-Ring box and the size you need is in there." Turns out the 20x2mm they thought they saw was 20 QTY 2mm x 17... which knowing my luck would snap not having the proper thickness. All that aside... ordered it from BAVAuto and it should be in anytime now.

Useless Gasket repair... waiting to knock out the Fuel System problems at the same time.



Another note...

I've noticed an oil leak thats significant... drive way looks like a ford has been parked there over night. Checked the valve cover and no signs of leaks... Checked the OFH Gasket... and no signs of leaks.

Which leaves either the rear seal... or the dreaded Oil Pan Gasket or CCV, but on the bright side I need to put some new axles in as they've started clicking on a hard turn left or right while accelerating.

Probably going to shotgun the CCV, Oil pan Gasket and axels all at the same time.

[270_BMW]

Oh boy.... so I got the Crankshaft Position Sensor replaced today.

However... while moving everything back into place, the vent from the CCV to VANOS... happened to be dry rot and snapped.

Of course causing me to shut the hood and walk away to keep from shouting obscenities.

@(@&*#^*!&)!*!)@&#*@

[mr_robot]

Did changing the crank position sensor solve anything?

[270_BMW]

Originally Posted by mr_robot

Did changing the crank position sensor solve anything?

I would like to think it will... haven't had a chance to test it.

USPS was supposed to deliver my new CCV system and I waited ALL DAY, stepped out to go get some pumpkins from the market down the road and I swear that they had to be waiting for me to leave. Wasn't gone twenty minutes and they stuck a "Ooops. Sorry we missed you." tag on my door.

*edit

Currently I have the intake manifold taken off the car waiting for my new CCV system. As soon as I get the parts in I plan to get it all together and give it a test run.

[270_BMW]

Originally Posted by mr_robot

Did changing the crank position sensor solve anything?

To answer your question finally... yes I think that is what solved the issue.

I've replaced the intake sensor and quite a few other things as well... but I am confident that was what was causing the issue, of course since I've changed only the intake camshaft position sensor my exhaust one is playing up and giving me codes. Perhaps its better to replace them both in tandem? Thankfully the exhaust sensor isn't difficult to get to. Since I have it all back together with the shotgun method I haven't had a bit of issues from it, even repeating the same test several times.