Hot answers tagged

15

While regular maintenance is not required it is advisable to check how much the chain has stretch, say every few 100K. If the chain stretches too much the tensioner may no longer be able to perform its job. There's also the problem of the pins becoming a bit loose in the side plates. The chain should also get a visual check whenever the opportunity presents ...


13

Model number differentiates the power (and usually size of the engine) of the car. You can often expect that car with a larger model number will have better optional equipment (it is valid for BMW 7 series models, perhaps series 3 and 5 have the same tendency). Models with bigger engines usually have different (stronger) suspension and stronger brakes. They ...


13

I believe SE stands for "Special Equipment" on BMW. Basically individual options. The "M" on the steering wheel means it has an M Sport package, mostly prettier design trim - bodykit, M badges, steering wheel, shift knob, exhaust tips, etc. Possibly a harder suspension as well, not sure if all models get that. From the pictures the BMW is an E90. If the car ...


10

Sounds to me like your starter motor is on the way out, as you are getting enough power, as a bump start is working, and sometimes you are able to start normally. This isn't that uncommon - they do take a lot of stress and load, and the internal friction can end up being too high for them to cope with. A temporary fix I have used in the past is to whack ...


10

I think I have an answer But bear in mind that this is my assessment with the limited information at my disposal. I'll walk through my reasoning here. If someone finds a flaw in my logic then I'm all ears. Here is a summary of your data +-------------+-------+-------+-------+-------+ | Condition | LTFT1 | LTFT2 | STFT1 | STFT2 | +-------------+-------...


9

What is a shock absorber? I'm going to answer the basic title question with a carefully selected quote from the great Wikipedia: ... their intended sole purpose is to dampen spring oscillations. Think of how you want your car to ride when driving down a smooth road that has a bump or pothole. You expect to feel a mild jolt when the car travels over ...


9

This be what the internet gives me. I have never owned a BMW but I hope this helps. In the picture look for the red arrow and on your car look on the left rear side of the engine.


8

On most bikes the carb has an overflow port that drains through a tube to the ground. This is important if the float sticks. Usually you can tap the float bowl with a screwdriver and unstick it, but if it happens again, overhaul the carbs. Also, don't smoke around a bike that's dripping gas.


8

Red one is likely to be for a pull hitch. If you get stuck you can insert a screw with the hoop on the end and it will allow someone to pull you out with a chain or winch, putting load in the appropriate place (not the bumper). The screw device is probably in your trunk somewhere. From the owners manual


7

If you are not familiar with the electrical system I would get a referal to a good shop familiar with BMW's. They may have seen it before or at least recognize what caused it. This a case where it must be determined if your melted wires were the cause or the result of another problem. Just installing another harness may result in the same melted wires. The ...


7

I do not understand why the coolant system needs a bleed screw at all Because air pockets. Filling up coolant doesn't necessitate that the entire system will be filled with coolant. There are parts of your cooling system that will trap air when it is refilled. The bleed screw is a means to expel the trapped air from the system. I repeatedly fill the ...


7

If the picture you have attached is similar to the starter on you car, then the power to the starter motor is only delivered if the solenoid operates, so the solenoid must be working. However, the shift lever labelled in the picture, that pushes the pinion forward to engage with the flywheel may be broken, that would explain your problem. Your problem ...


7

If you are hearing the starter turn (typical starter whir), the most probable problem would be the one way clutch has gone out. It's the part of the starter with the teeth on it which engages the starter ring gear. If the solenoid has gone out, the starter motor will not spin, because the solenoid is the part which forces a large copper washer into the posts ...


7

They may not have bled your cooling system properly As a possibility, if you had air trapped in your cooling system it would expand as the engine approached operating temperature. It would eventually, hopefully, make it's way into your radiator where the air would get released into the overflow tank by a valve that opens with higher pressures. As the ...


7

I agree with @JPhi1618 that it is related to the MAF sensor. From the picture you provided in your comment, it appears your (really good looking) MSR intake comes with its own MAF sensor housing. I too am unfamiliar with this car, but the MAF housing on your new intake is likely a different diameter than the OEM housing. This causes problems, as your OEM ...


7

Are you referring to the Driveshaft FlexDisc?


6

As other people have already pointed out, the warning light is the oil pressure warning light so you really need to get to the bottom of this, especially if the light comes on at any other engine speed than idle. I think the culprits - especially if the problem started shortly after an oil change - could be (in decreasing order of likelyhood): Oil ...


6

The very first thing that you should check is whether you actually made a mistake and, if so, which one. A cap that says "ATF oil only" is for automatic transmission fluid. If you're adding engine oil to the transmission, that's going to make your transmission very unhappy. It is fixable: you'll need to drain the transmission fluid and replace it. If ...


6

Your problem is caused by decompression valve problem in 650 engines prior June 2012. Only way to get rid of it permanently is to replace decompression valve, which fortunately is not a huge job. BMW bulletin about the issue: http://www.gravesurrounds.com/bike/hotstart.pdf Chances of having hot start problems due decompression valve are higher when your ...


6

I believe that what @JPhi1618 stated is a major factor in your rich condition: Could the different air flow path cause issues for the MAF which would have been tuned specifically for the stock intake? And that this statement that you made to counter I believe not to be true: BMW uses the same Bosch `MAF` sensor on all turbo cars. I highly doubt they ...


6

I know nothing about BMW, but this might help. My VW Jetta had a "La Cucaracha" warning buzzer that was plugged into the fuse box and looked like a relay with a speaker on it. Rather than unplugging it, I covered the speaker part with several layers of electrical tape. The tone could still be heard, but it was very quiet and not nearly as annoying. So, ...


6

It will most certainly be more expensive if you get a professional to repair this bumper for you. However, it will be a safe investment on your trade-in if it is restored professionally. We cannot discuss price on this platform, but, the cost to do this yourself versus taking it to reputable shop will be substantial. If you decide to do this on your own, it ...


6

I'm afraid the only way to resolve this is to get matching width wheels plus matching sized tyres across the back axle. Even with the same sized tyres on different width wheels, the effective surface and sidewall profile shown to the road will be different. You may have success trying to find a second hand set of wheels cheaply or even buy an incomplete ...


6

Sounds like it's possibly involved with the transmission and/or clutch. But first, I would check all the heat shielding on the car to make sure that's not a factor. When the transmission is engaged (when the clutch is not depressed) it can cause some NVH (noise, vibration, harshness) that will cause nearby heat shields to rattle and make it sound like a ...


6

A knocking noise when braking (or during less noticeable maneuvers) can be attributed to worn front suspension parts - especially control arm bushings. The image below is from some random heavily worn lower control arm bushings. As you can see, the rubber wears out and the connector in the middle is free to wiggle and knock around. Using your brakes puts ...


5

The e46 has a central jack point in the middle/front of the car, between the front wheels (red circle). Just make sure you use a block of wood between the jack and jack pad to help distribute the force a little.


5

A lot of BMWs have a noise, but it might be a pump going bad. If I remember right, the lines are right under the reservoir. Check them for softness, and if they are soft/chewy I guess you can replace them. If it's a pump, run until it pops, as they are like $400. As far as the lines from the rack, those are hard lines, and unless clearly pinched not sure if ...


5

I'm used to timing chains on American V8's, but they will "stretch" over time (think 200k miles) and sometimes on high mileage engines they could "jump" a tooth if they are too stretched out. But they do not require any maintenance.


5

You probably have a wheel out of balance and it's difficult to determine that without putting the tires on a balancer. One thing you could try would be to jack up the car and put pencil on a stationary object like a brick or a board move the pencil so it almost touches the wheel, spin the tire and look for the rim moving in and out in reference with the ...


5

Yes but as of present there are no US based tuners that provide a DPF delete kit or engine tuning (reprogramming) to allow the safe removal of this device. They exist overseas in the UK and Europe but I would hold off until someone in the US provides a product specific to the US car. Also the US spec 335d uses a DEF (diesel exhaust fluid, adblue, urea ...



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