There are a few issues that can lead up to a cylinder 2 misfire code. Report back and let us know if the coil fixes your issue. Otherwise, I'd check your fuel injector (swap cylinder 2 with a different cylinder and see if it follows) and possibly do a compression/leak down test. Here are some other options to diagnose below:

https://www.obd-codes.com/p0302

https://www.northamericanmotoring.co...2-misfire.html

 

For all of you having this issue I found out after months and months what was causing my issue and it was the fuel pump. The fuel pump seemed to be going bad and not powerful enough so it was throwing codes, check engine lights, and causing a cold start issue. Replaced the fuel pump and fuse and no issues since!!!

 

Did you also have the DSC, SES lights, and P0302 code with your issue? Funny enough, I just did the fuel pump and filter about a month ago when it failed. I bought a Delphi brand pump, and it seemed to have cleared the issue.
My buddy came over last night with an Autologic diagnostic tool, and we noticed that the swapping of wires, coils, etc, didnt make a difference. The diagnostic tool showed issues with cyl 4, not with cyl 2...go figure. It also showed the O2s working hard to regulate the A/F mixture. We'll be tearing it apart this weekend and checking out the valves, springs, etc. Then, if that fixes the issue, Im selling this thing.

 

So after some time of simply sitting in the garage, I started tinkering with the Mini again. A compression test showed 150, 145, 150, and 155, respectively. I replaced two of the fuel injectors, two plugs, and then cleared the P0302 code. The car ran rough for a few minutes and then the DSC light popped on. I revved it up a bit and it hesitated once again at the lower RPMs. It corrected itself by a bit, and then the SES light came on.

Could it possibly be a computer issue? or maybe a Cam sensor? Arghhhh Im lost.

 

Did you scan for the code and it is throwing P0302 again?

 

Yes sir, after clearing it, the DSC light comes on, followed by the SES. I didnt see any noticeable cracks in the injector connections.

 

Wonder if there might be a great issue at foot here. Some additional info in this NAM thread by the last poster, but most of which you have already covered. https://www.northamericanmotoring.co...checklist.html

I also recommend going to our article here: http://www.pelicanparts.com/techarti...eplacement.htm. Go to the bottom where it says comments & suggestions. Leave a comment with detailed information on what you've done already and how the DSC/SES and P0302 code are still present. Our MINI guru may have some additional input for you.

 

I think I found it! After pulling off the valve cover again, we checked the springs, rollers, rockers, etc., a bit more in detail. The roller on the exhaust side barely moved, so we turned it a bit more and finally noticed that there were heavy grooves in it. The rest of the cam and components had spotty areas where it looked like the metal had been beat against concrete. So I'll be searching for a set of rockers, and cam assembly. Should I stick with oem or jump up to a decent increase? JCW? I have a son in the dorms, so the pricey ones are most likely out of the question...

 

All 1st gen used same cam and rocker arms;therefore,there is no such thing jcw/gp cam/rocker arms and no gain in power.The only difference is that early years rocker arms came with nylon/plastic tips whereas some 06 and up came with metal tips. That's about it. Have the cam sent to a machine shop to "buff" it out instead of buying another one. Also make sure to torque all rocker arms down in sequence and 22ft lbs. And have you done a leak down test?

 

Oh ok, I would've expected the JCW or GP to come a bit more aggressive. I may just buy an extra OEM cam. I haven't done a leak down, just a compression test.

 

i have a low miles cam from my r53 06 when I upgraded to a bigger cam. I can sell it to you for 100 shipped if you ever need it

 

Im actually looking to buy immediately, if youre ready to sell it. Any defects, chips, scratches, etc? Im currently looking for the rockers as well.

 

Its perfectly in shape. I can ship it on Tuesday if you can wait,for rockers arms. They come with head,or i also have a cylinder head as well that is already machined

 

I can wait until Tuesday. Are you saying that youll have the camshaft and the rockers? Im at 92592

 

I can get the rocker arms for you. But usually they come with the head,i will do cam and rocker arms for 250 shipped to you. Let me know

 

That sounds good. Im pretty sure the axle (the bar that holds the rocker assembly; not sure if that's the actual name) can be re-used. Are the rocker arm rollers in good shape? Sorry, I just want to make sure I know the actual names of the parts needed. If you have pictures of the entire unit, that would be great. Also, 250 shipped works for me. Paypal ok?

 

Yes,PayPal ok. The cam, 2 bars that rolling the intake and exhaust rocker arms are in good shape (come all together). Price is shipped as pls help me to cover the PayPal fee,my number is 2406434715,i will be at work from 6pm tonight till 6am tomorrow. So i will have pics sent to you as soon as i get home

 

Ok, that'll work perfectly. My number is 760-521-6322.

 

Thank you for the reply and the symptoms are exactly what I am experiencing here. The car won’t rev past 1500 rpms, is idling terribly, and stalls after 10-15 seconds. This thread has given me a place to start!

 

I just had the same issues on my R50. It was fuse F3 in the engine compartment fuse block. It had corroded a bit and had poor contact. Caused cam position sensor code as well as O2 sensors and evap code. DSC light wouldn’t turn off with toggle switch either. Check engine light was on and car running like crap! Codes P0445, P0031, P0037, P0340. Hope this helps you figure it out!

 

Hopefully, it helps. I tried to provide a few pics for when I went through this issue in case it helps. Lots of feedback on the topic which greatly helped me.

Good luck. Report back when you have this settled or figured out.

 

check your purge valve, it will cause other issues if it’s clogged.