Hi all,
I'm not sure if this is detonation or not but I'd like to check with you guys. Firstly, for future reading of this thread to describe the conditions, my car hadn't been driven for 24 hours with very cold weather (between 0'C and -10'C depending on time of day).
I went to start my car this morning and *slaps head* forgot I had a manual, I turned the key with the car in reverse and naturally you can imagine the car didn't start
I took it out of gear and she started normally, I whack the heater on full and the rear de-mist and start de-icing the car, as I'm prancing around the car like a homo in the cold the car slowly goes from the cold/fast idle norm to something quite lumpy and rough.
I finish de-icing the car and jump into the car and blip the throttle and it was running so rough that the car was shaking and I think to myself "it's just been stood in the cold too long, it'll clear up as I drive to work", as I back her off the drive in this state there was a noticeable bang / clang, almost as if someone had loudly tapped a spanner on something metal under the engine.
At this point I've stopped in the middle of the road and a cars coming down the hill pretty quick, so I set off rather sharpish and the car really didn't wanna move, running like a bag of bolts accompanied by another clang.. so I back off the throttle completely and coast down the road which she seemed happy to do.
As I continued my journey to work the problem seemed to disappear, I had one more clang trying to climb a road (was a bit on boost at this point) but then as I near the end of my 30 minute journey the problem had completely disappeared and I could boost without any issues.
Anyone know what this was and what could have been the cause? The car is having a major service this weekend so hopefully that might resolve it, but if it's something more sinister I'd rather be prepared to fix it now whilst I've got a few quid in my pocket than in a month when I'm back to normal.
Thanks in advance