R50/53 2003 Mini P0300 - Random Misfire
Thread Starter
|
Neutral
Joined: Sep 2016
Posts: 2
Likes: 0
2003 Mini P0300 - Random Misfire
Hello all,
I need advice from someone out there. In the last year my check engine light has gone on and off. It has always been P0300 - Random Engine Misfire and no other codes show up. I have replaced the Fuel Pump, Belt Tensioner, Spark Plugs, Plug Wires, and the Coil Pack. The idle is rough and the light usually goes on when I'm on the highway and sometimes when I start him it usually is not quick to turn over. Im running out of ideas and patience, does anyone else know what it might be??
I need advice from someone out there. In the last year my check engine light has gone on and off. It has always been P0300 - Random Engine Misfire and no other codes show up. I have replaced the Fuel Pump, Belt Tensioner, Spark Plugs, Plug Wires, and the Coil Pack. The idle is rough and the light usually goes on when I'm on the highway and sometimes when I start him it usually is not quick to turn over. Im running out of ideas and patience, does anyone else know what it might be??
Vendor - Detroit Tuned 15 Years
Joined: Jul 2014
Posts: 1,859
Likes: 34
From: Clawson, MI
What is your fuel pressure at idle?
Compression numbers?
Is the timing cassette in time?
Check for vacuum leaks?
MAP sensor operation?
Crank/cam signals?
Compression numbers?
Is the timing cassette in time?
Check for vacuum leaks?
MAP sensor operation?
Crank/cam signals?
__________________
MINI Specialists * Parts * Performance * Service
Phone:586-792-6464
Info@DetroitTuned.com
Nick@DetroitTuned.com
Some other areas to check: https://www.obd-codes.com/p0300
__________________
Your Trusted Source For DIY and Parts
FREE SHIPPING over $99 click here
MINI Parts | DIY Help | Facebook | Twitter | Instagram | YouTube | Promos
888.280.7799 | 6am - 5pm PST
FREE SHIPPING over $99 click here
MINI Parts | DIY Help | Facebook | Twitter | Instagram | YouTube | Promos
888.280.7799 | 6am - 5pm PST
Neutral
Joined: Oct 2016
Posts: 7
Likes: 0
P0300 code
Hello all,
I need advice from someone out there. In the last year my check engine light has gone on and off. It has always been P0300 - Random Engine Misfire and no other codes show up. I have replaced the Fuel Pump, Belt Tensioner, Spark Plugs, Plug Wires, and the Coil Pack. The idle is rough and the light usually goes on when I'm on the highway and sometimes when I start him it usually is not quick to turn over. Im running out of ideas and patience, does anyone else know what it might be??
I need advice from someone out there. In the last year my check engine light has gone on and off. It has always been P0300 - Random Engine Misfire and no other codes show up. I have replaced the Fuel Pump, Belt Tensioner, Spark Plugs, Plug Wires, and the Coil Pack. The idle is rough and the light usually goes on when I'm on the highway and sometimes when I start him it usually is not quick to turn over. Im running out of ideas and patience, does anyone else know what it might be??
I just dealt with this on my '05 R50. That code is a little vague.
Here's what I did-
1. Replaced my spark plugs, wires, & wiring harness (inexpensive).
Light came back on.
2. Checked my compression, cleaned intake (inexpensive).
Light came back on.
3. Replaced Serpentine belt and Harmonic balancer (not cheap).
Light has not comeback on.
Tuns smoother, quieter, and I'm at 100k miles, so I chalk it up to my 100k tune-up. Hope that helps.
Thread
Thread Starter
Forum
Replies
Last Post
TheBingoBalls
R56 :: Hatch Talk (2007+)
2
Sep 7, 2016 04:37 PM