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-   -   Which cylinder is number 5? Engine misfire (http://www.bimmerfest.com/forums/showthread.php?t=524993)

codog2 03-07-2011 10:45 AM

Which cylinder is number 5? Engine misfire
 
About a month ago I pulled my car from the driveway into the garage. The next morning when I started the car it the engine was shaking like crazy and the check engine light came on.

I read/reset the code with my cheapie code reader and it was "cylinder 5 misfire". The next time I started the car it ran fine.

Last night I pulled the car in from the driveway and into the garage. My wife started it this morning and she said it was running rough/shaking again. This time it corrected itself after a few seconds and no check engine light came on.

I'm assuming I probably either have a bad plug, bad coil, or leaky gasket that is fouling the plug. I tempted to pull the plug and take a peak. Would number 5 cylinder be the second from the front of the car, or the rear (firewall side)?

szee1 03-07-2011 10:56 AM

Number 5 would be second from the back. Number one almost always is closest to the radiator. I would almost risk saying this is always the case but no doubt there is an exception out there somewhere.

Supercourse 03-07-2011 11:48 AM

Quote:

Originally Posted by codog2 (Post 5899320)
I'm assuming I probably either have a bad plug, bad coil, or leaky gasket that is fouling the plug.

I wouldn't bother about pulling that #5 plug.

Starting a car up to just move it in or out of your garage can cause the engine management computer to get confused.
It's more likely that plug got wet with gas, not oil, which is why it can clear itself quite quickly.

Even if you are in the habit of doing that driveway shuffle, this can happen randomly.
Dealerships are familiar with it from having to start cars up to just move them a few feet.
Happens even to the reliable Japanese brands.
Some makes and models are completely immune to it, but I have heard that BMW is somewhat susceptible.

See:
http://bmwauto.ottawa.on.ca/bmw-m5/b...de-806716.html

(I don't think the wash itself has anything to do with it - just the very short run cycle.)

http://www.bmwland.co.uk/forums/view...hp?f=5&t=85150

See how it goes over the next while, especially if you are able to avoid those short run cycles.

bluskye 03-07-2011 12:41 PM

When I do that with my BMWs, they all do the same thing. Its normal. They dont like to be started and shut off in a short span of time.

codog2 03-07-2011 08:42 PM

thanks for the responses. Both times I had pulled the car in after doing some maintenance work on my Acura MDX in the garage. I was thinking the X3 was getting jealous of the extra attention the MDX was getting

Supercourse 03-07-2011 09:01 PM

Maybe the X3 is feeling awkward wearing those new Yokohama tires.

Even though those Envigors are made in a U.S. plant. (Don't forget to give us an updated review on them sometime.)

codog2 03-08-2011 04:13 AM

The envigor's are great - I like them a lot. They handle just as well as the scorpians and are extremely quit on the highway. The only negative is that they can be a little tricky in the snow/ice

Ishniknork 03-08-2011 06:41 PM

On the original topic, I always let my engine come off high idle and settle down before moving/driving.

OMNI-Potent 03-09-2011 07:26 AM

My E36 had this problem. Actually, if you turned it on and shut it off quickly it would not start. You had to crank it and keep feathering the throttle to get it to start. It would run like crap for a few minutes. This only happened a couple times before I stopped doing that.

My friend who is a BMW indie said it was a "cold start lock". I don't know if such terminology exists.

However, after my experience with the E36, I don't start any car, run it for a few moments and then shut it off.


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