Rough cold starts and a hint of fuel smell in the oil
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Alright so I've got a 2013 135i with the N55 and lately it's been taking a few extra cranks to fire up in the morning, and when it does start there's a strong fuel smell for maybe ten seconds then it clears out. I checked the oil dipstick and honestly it smells a bit like gas too, which has me worried. A friend who knows these cars said it could be leaking injectors dumping fuel into the cylinders overnight. I know the index 12 injectors are expensive but I don't wanna just replace all six if it's actually a seal or a fuel pressure issue. I'm trying to find a place that does a proper leak down test on the injectors and can tell me exactly which ones are bad. I've been looking for a Professional Injector Service that actually cleans and flow tests them instead of just saying "replace everything." Has anyone been through this on the N55 and found that just one or two injectors were the problem? Also wondering if driving it like this is dangerous or if I can still use the car while I figure this out. Really don't want fuel washing the cylinder walls and killing the engine. Any recommendations for a shop in Abu Dhabi that won't charge me an arm and a leg for diagnosis would be amazing. Thanks a lot.