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Hi everyone,
I purchased a 2014 M5 with Compitition Package from a BMW dealer back in Sept that had 30k on it. I drove it home 800 miles, Virginia to Chicago. I went to bed and the next day while on the highway I had a catastrophic engine failure. Upon inspection the rod blew apart and put a golf ball size hole in my block. BMW replaced the entire block under warranty. When I questioned what the root cause was, all they could tell from ISTA was a fuel injector stuck open and flooded the cylinder. They replaced the injectors on the cylinder which showed errors 4 & 7. Since then I’ve put 5k on the new motor with a Dinan Stage II Piggyback and have had no issues.
A couple of questions:
1.) Is it common for these injectors to get stuck open and if they do how likely is it to cause a locking situation which would result in the rod bending and blowing through the block?
2.) Should BMW of replaced all of the injectors?
3.) How likely is it one of the remaining injector suffer from the same failure?
4.) Are there any tests I can run to identify possible injector failure?
Post failure, I have a copy of the failures from ITSA if anyone is interested.
Sorry for all the questions.
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