BMW X5 E53 (also E60 & E46) common problem, lean misfire at idle and engine rattle: BMTroubleU

The cause of common e53 x5 lean misfire in 6 cylinder petrol engine. Also may present with an engine rattle, especially on start up. PLEASE NOTE I NO LONGER DO REQUESTS AS I DONT WORK FOR BMW ANY MORE BUT IM STILL HAPPY TO ANSWER QUESTIONS

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BMW Misfire/ Rough Idle M54 6 Cylinder Low Compression
Does your M54 BMW engine have a misfire/ low compression ? Don't be quick to replace the engine. Please try this first before that is done. Could save you $1000's !!! Please Read Below !!! How this is done: Remove the Coil then the spark plug. After they are ALL out, we pour 1 ounce of fluid into each cylinder. Then I reinstall the spark plugs and let the car sit overnight. The next day you want to remove all the spark plugs again. Place a heavy towel over the valve cover so that all the spark plugs holes are covered. Proceed to crank the motor over using the key. Do this 4 separate times for 10 secs each time. Reinstall all the spark plugs and torque to spec. Reinstall all the coils and connect harness. If you were planning to replace the spark plugs ( Which I recommend ) I would wait till all the cleaning chemical is burned out of the cylinder. Start the car and vary the rpm for 1 minute between 1000 RPM and 3500 Rpm. if the engine seems like it is not clearing out or running rough after the 1 minute. Turn the engine off and restart. After the 1 minute has been completed, then run the engine @ 3500 rpm for 5 minutes ( Pending that there are no other issues with the engine) After that an extensive test drive on the freeway is recommended ( 15-20 miles). This chemical is strong and not healthy to breath so lots of outdoor space and fans to blow the Exhaust fumes away is recommended. After all is completed then reinstall the cover over valve cover. Depending on the mileage and time car has been driven in this state, it could take multiple tries to resolve issue. Also it is good to have car diagnosed as a low compression issue before performing this repair, since many other issues can mimic this symptom. Hope this helps!!





Misfire Faults and Umetered Air Leaks BMW 3 Series, X3, X5 with M54 engine
This situation could be on any BMW with an unmetered air leak with the M54 engine. This would be the 6 cylinder engine. The vehicle can run rough and misfire.





BMW X5 E53 Common Issues: BMTroubleU
Common issues to look for under a bmw x5 e53, includes a look at the automatic gearbox plug sleeve seal removal and replacement, castor bushes, cv boots, and charge hose seals. PLEASE NOTE I NO LONGER DO REQUESTS AS I DONT WORK FOR BMW ANY MORE BUT IM STILL HAPPY TO ANSWER QUESTIONS. Transcript- G'day guys, welcome back to BMTroubleU. Recently we did a part on resetting E53 service lights. I thought I'd get you in underneath the car today and check out a few other things ive found with this particular car. This is the gearbox, ive had the pan off obviously. You can see all the mechatronic bits and bobs in there. Now the reason ive got the pan off is because a reoccuring theme amongst all these mechatronic gearboxes- that includes E90's, 1 series, 5 series, a whole lot in the BMW range, is the plug sleeve seal up here (0:36) alright, that always leaks (very regularly leaks ok). So ive got it out today. Now the reason ive got the pan off is to get that out the white tab here, usually in this same area on alll gearboxes, just gotta pull that down before you can take that plug sleeve seal out. Ive got the new one here (0:58). Youve gotta have that little locator down the bottom, thats on this model. Im pretty sure thats how it is on the other ones as well, just down the bottom there. Just make sure you note that when you get it out, make sure its down the bottom there. Its got a corresponding locator on the plug just here (1:20). If you can see that. Now a couple of other things while we're under this E53 to look for on your car...just get my flathead. I always look at castor bushes on E53's- always. They're a heavy car and they like to fong out these castor bushes. These are the castor bushes (1:38). Youve got your tie-rods (1:41), your swaybars (1:43) and camber bushes (1:45), they never... hardly ever go. I've barely ever seen any of them bugger up, but these castor bushes.... these ones in particular are fine. If you can see that (1:57) thats fine, theres no splitting in that. Check up the top as well, I cant quite get my camera in there but check top and bottom. These ones are fine, but when they go you'll get brake shudder, you will get a big noise.... especially say youre on a flat surface, just put it in drive, let the brake off and get it up to whatever top speed it is at idle and then just jab on the brakes. And as soon as you jab on the brakes you'll hear the whole body just go BOOM and you'll go 'Oh, yea castor bushes' no problems. No need to get underneath it (most times) order them straight up. You can order just these bushes and press them in with any press youve got in the workshop, or if youre a home fella you can take these out its not too hard... down the end here (2:41) you might need a separator tool, alright. Take the arm out, the complete arm and take it down to where ever they have a press and they'll press them in for you. Other issues you get on these E53's obviously cause its four wheel drive its got front CV shafts. CV boots pretty regularly, i mean we havent had many of them recently, but i have done quite a few of those E53 cv boots. Alright, finally i havent got the belly covering off but turbo oil (you can see a leak there (3:22), that might even be one there) from the charge hoses right through the front bumper here in the Intercooler regularly go the seals in them. Ive been told they blow a bit of oil as per normal so dont about it worry too much. If you get bad leaks check your pcv obviously and your turbo seals, see if theyre blown or not. Thats all i can think about at the present moment, if you have any other questions or comments please feel free and we'll check you on the next update.





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