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Discussion Starter #1
Hi all,

I’m really after some advice please as I have no clue what to do now!
About a month ago my mini started running bad. When sitting idle it misfires badly and runs poorly. The spark plugs and ignition coils were replaced.... but sadly no improvement. Anything over 2000revs seems fine when driving.
I took it to a local garage who had it about two weeks, put it on diagnostics and couldn’t find the cause of the problem. They advised I take it to the local main dealer.

My main dealer has now had it a week. They have done diagnostics investigations and came up with nothing.... but the technician ‘thought’ it was a problem with the timing chain. So they initially tested the chain and said it was ‘way out’ and then quoted £1000 to replace!!! So I went ahead with the job because I was advised that the technician has been working on minis for 30 years and he thought this would be best.
This has NOT fixed the problem or made any difference to the way the mini runs. He said it’s still miss firing across all cylinders.
They now want to replace more parts.... but cannot guarantee this will fix the problem!
I currently have a bill in excess of £1250 .... how much should I be spending on a ‘whim fix’???

Any help or advice would be greatly received!!!
 

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956 Posts
If the chain didn’t fix it they should put it back to how it was and charge you nothing, their mistake, not yours.
 

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Discussion Starter #3
Thank you for your reply!
I am really disappointed with how things have panned out.
After posting the my first message above, the garage called back. They are now suggesting they replace the high pressure fuel pump at another £1000 or I could source a second hand one?! BUT - there is still no fault showing so this is again a risk as they are just suggesting this is the next ‘fix’ based on a technicians advice.....but I’m very dubious because this is again just a ‘whim’ and is not guaranteed to fix the problem! 😐🤧
 

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cristo
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2,827 Posts
If the chain didn’t fix it they should put it back to how it was and charge you nothing, their mistake, not yours.
Actually, if the MINI has about 60K
miles or more and/or has increased
slack (easily measured by removing
the chain tensioner and using the
tool for that), it’s a good idea to
replace the timing chain and tensioner rather than to risk it going south later
at a MUCH higher expense even if the
timing chain wasn’t the cause of your
problem.

Sorry for the run-on sentence.
 

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MINI2 Regular
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14 Posts
{snip} They are now suggesting they replace the high pressure fuel pump at another £1000 {snip}
Fuel pump doesn't make sense to me. Why would a fuel pump work fine at a high flow rate (over 2000 RPM), but fail at low flow rate (idle)?

And I completely disagree with cristo's statement about 60,000 mi on a timing chain. Timing belts, which are a periodic replacement item, typically last 90,000 miles. Barring other issues like running low on oil pressure, a timing chain should last the life of the engine; they are not replaced until an engine is rebuilt.

That said, apparently there was a lawsuit regarding MINI timing chains on some years. Here is a web page about it. I don't see your year model and mileage in your posting, but if it falls under this you may want to pursue it.
 

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Hi all,

I’m really after some advice please as I have no clue what to do now!
About a month ago my mini started running bad. When sitting idle it misfires badly and runs poorly. The spark plugs and ignition coils were replaced.... but sadly no improvement. Anything over 2000revs seems fine when driving.
I took it to a local garage who had it about two weeks, put it on diagnostics and couldn’t find the cause of the problem. They advised I take it to the local main dealer.

My main dealer has now had it a week. They have done diagnostics investigations and came up with nothing.... but the technician ‘thought’ it was a problem with the timing chain. So they initially tested the chain and said it was ‘way out’ and then quoted £1000 to replace!!! So I went ahead with the job because I was advised that the technician has been working on minis for 30 years and he thought this would be best.
This has NOT fixed the problem or made any difference to the way the mini runs. He said it’s still miss firing across all cylinders.
They now want to replace more parts.... but cannot guarantee this will fix the problem!
I currently have a bill in excess of £1250 .... how much should I be spending on a ‘whim fix’???

Any help or advice would be greatly received!!!
So sorry to hear of your issues with your car . So I had watched some timing chain videos for n18 with the duel vanos system. Some thing struck me that this might just be an issue with yours. After the Chain, guides two new solenoids and vanos gears the tech Connected a Diagnostic tool to the Car and "RESET the ECM For the new vanos limits. This corrected a poor idle the car had after the chain was replaced . No codes had been set .You tube video; The Mini Specialist Feb.17 2020 titled Mini r56/r55 timing chain repair . last 2 minutes he explains how to Remove and relearn the vanos limits. GOOD LUCK HOPE IT HELPED. Lou
 

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cristo
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2,827 Posts
And I completely disagree with cristo's statement about 60,000 mi on a timing chain. Timing belts, which are a periodic replacement item, typically last 90,000 miles. Barring other issues like running low on oil pressure, a timing chain should last the life of the engine; they are not replaced until an engine is rebuilt.

That said, apparently there was a lawsuit regarding MINI timing chains on some years. Here is a web page about it. I don't see your year model and mileage in your posting, but if it falls under this you may want to pursue it.
Timing chains should last the lifetime
of the engine, but the MINI N14 ones tend
to stretch and the guides and tensioner
are not designed to be durable.
It should at least be measured for
excessive chain stretch and listened
to carefully after 60K.
 

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1 Posts
I am in HK and heard someone had the same problem then they replaced the battery to fix the problem, you may try to borrow a used battery to see if it works.
 

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TGMoCatKU
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37 Posts
Hi all,

I’m really after some advice please as I have no clue what to do now!
About a month ago my mini started running bad. When sitting idle it misfires badly and runs poorly. The spark plugs and ignition coils were replaced.... but sadly no improvement. Anything over 2000revs seems fine when driving.
I took it to a local garage who had it about two weeks, put it on diagnostics and couldn’t find the cause of the problem. They advised I take it to the local main dealer.

My main dealer has now had it a week. They have done diagnostics investigations and came up with nothing.... but the technician ‘thought’ it was a problem with the timing chain. So they initially tested the chain and said it was ‘way out’ and then quoted £1000 to replace!!! So I went ahead with the job because I was advised that the technician has been working on minis for 30 years and he thought this would be best.
This has NOT fixed the problem or made any difference to the way the mini runs. He said it’s still miss firing across all cylinders.
They now want to replace more parts.... but cannot guarantee this will fix the problem!
I currently have a bill in excess of £1250 .... how much should I be spending on a ‘whim fix’???

Any help or advice would be greatly received!!!
You should ask to meet with the represenative from MINI who periodically visits the dealership. Try to do this through the dealership or, if they do not cooperate, contact MINI customer service UK and compain politely.
 

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I know this may sound silly but it happened to my sister who purchased my mini after i got a new one. It was a 2004 model cooper. Not sure if this applies to you. Her car was missing and i also found it felt like a transmission fault at low speed. ( auto) I rang mini and the person on the line asked me how old it was and straight away he said to me “ you wont believe me but i am telling you its the battery”. I then contacted the local royal automobile club ( they do the breakdown service) and asked him what he thought. He said bullshit. It was a transmission issue. I talked my sister into getting a new battery as it was 5 years old so it would not be a wasted expense as it was due for a new one at anyrate so i suggested go down this path as the mini guy seemed so positive. Guess what, it fixed all the transmission and other issues so I understand where the previous post ROYC is coming from. Might not be your problems as i dont know the year of it. Good luck
 
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