Hey all,
My names Ryan and I'm new to Mini and have had a R53 (06) for about 7 months now. So let's start off with the codes.
P0301 cylinder number 1 misfire detected
P2096 post catalyst fuel trim system too lean bank 1
P0313 misfire detected with low fuel
**note the P2096 was thrown about a week before the car started to misfire but saw no mechanical / running issues.

What I've done so far is change the coil pack, changed the spark plug wires and spark plugs. The old plugs smelled rich to me which is strange with the codes I'm getting. It is a constant misfire as soon as the car is started sounds like a Subaru and smells rich also.
Anyone have any ideas what this could be. I was leaning towards doing a compression test next along with fuel pressure I'm assuming there is a test port on the fuel rail but I'm not sure because everything is under the supercharger intercooler. But wanted to get the opinion of the forum to see if there were common issues around this problem. I appreciate your help.

Thanks,
​​​​​​​Ryan

 

Welcome to NAM, sorry about your problems.

Going to move this to the Stock Problems/Issues section. Should get some responses.

How many miles on the car? P0301 sometimes points to a burnt exhaust valve. Try the dollar bill test. Start the car, take a; bill, paper towel, etc and place it in front of the tail pipe. A good engine and you will have a constant force coming out of the pipe and the paper/towel will extend out from the forcewith no fluttering. If there is fluttering, then the exhaust valve is most likely burnt.

A compression test will reflect a problem but necessarily define whether it is a valve or a piston issue.

 

Thanks for moving the post to the correct thread. The car is just about to hit 80k. It seems like carbon build up on the valves is a problem I see with these causing them to either be stuck open / closed.

 

The carbon issue is with the Gen2 Prince engine, not the Gen1 Tritec. Try the dollar bill test and let us know what you find.

And, no thanks required, we Mini folks need to stick together.

 

Im confused on how the placement is so I just take a paper towel and behind it the bill and hold it flush up against the exhaust and listen for flutter, correct?

 

Picture holding a handkerchief out your car window when it is moving. Hold the paper by one corner and put it down by the muffler, you will see the flutter if the valve is shot. Try this video:

 

Here it is tell me what you think.

 

Fluttering for sure, unless you have an old tractor.

 

Well then I guess it's time to do a compression test to what cylinder then after that to the leak down test to see if it actually is the valve would you agree

 

Cannot argue with your logic.

 

Damn was crossing my fingers for a cheap easy fix now it looks like a valve job decking the head and all that ughhh. Will probably spend around 5 600 I'm guessing