Why does my engine rattle on cold start?
Dear Tim: It is not unusual to hear some engine when first starting on a cold start. The sound can either be from a hydraulic valve lifter, or piston-to-cylinder wall clearance. As the engine warms, the clearances change and get tighter and noises will usually disappear. The noise may not occur again for weeks.
Is the BMW N42 engine reliable?
Summing up N42 is rather technological and economic engine. At the same time it can be rather demanding. The level of its reliability is the same as in M40-M43 series and it calls for regular examination and control as well as high quality maintenance.
What is the difference between BMW N42 and N46?
Compared with its N42 predecessor, the N46 features a revised crankshaft, intake manifold and valvetrain. Changes included the intake manifold, exhaust camshaft and the engine control unit was changed from Bosch Motronic version ME9.
What are the most unreliable BMWS?
5 Most Unreliable BMW
- The BMW N54 engine. the N54 usually came with the 35i model was popular for tuning and it’s reliability issue.
- BMW 318i E46 (facelift)/N42 engine.
- BMW M3 E46.
- BMW M3 E9X.
- BMW M5 E60.
What does a rattling engine sound like?
The most common engine rattling at idle isn’t an engine problem at all. What you’ll hear is a clattering, tinny metal noise when you idle. The catalytic converter is an emissions control component in your exhaust system. Its honeycomb-style core superheats unburned gases in the exhaust before it leaves the tailpipe.
Can too much oil cause engine rattle?
Too much oil can cause problems like foaming and possibly the piston skirts contacting the top of the oil level in the pan, which would cause some strange sounds and possible (but unlikely) damage. Usually extra oil will eventually be blown out the valve cover vent.
How do I stop my engine from rattling?
9 Best Oil Additives to Stop Engine Knocking (and Lifter Noise)
- 1) Sea Foam SF16.
- 2) Archoil AR9100.
- 3) Liqui Moly Cera Tec Friction Modifier.
- 4) Lucas Heavy Duty Oil Stabilizer.
- 5) Red Line Break-In Oil.
- 6) BG MOA Oil Supplement.
- 7) Rev X Fix Oil Treatment.
- 8) Lucas Engine Oil Stop Leak.
Does N46 engine have vanos?
Premium Member. both have vanos and valvetronic eccentric cam technology which works in conjunction with each other…
Is BMW N46 direct injection?
However, the direct-injected N43 was not sold in countries with high-sulfur fuel, so the N46 continued to be produced alongside the N43….BMW N46.
| BMW N46 engine | |
|---|---|
| Fuel type | Petrol |
| Chronology | |
| Predecessor | BMW N42 |
| Successor | BMW N43 |
Why does MY BMW n42b20 engine use so much oil?
Look after radiator condition of the cooling system. After a small overheating the engine will start to consume oil. The reason is susceptible valve stem seals. Also, you should know that the N42B20 engine has high demands on the quality of the oil. Use engine oil recommended by the manufacturer.
Is it possible to tune a BMW N42 engine?
N42 engines are not the best choice for tuning. You may face difficulties in finding necessary dimensions and performance parts on the market. That is why you will hardly be able to implement serious upgrading project. The only way to increase the level of HP is to proceed with chip tuning.
What kind of cylinder block does BMW n42b20 use?
Heavy iron-cast cylinder block was replaced by lighter aluminum alternative with iron-cast sleeves. N42B20 uses new long crankshaft with 90 mm stroke as well as new pistons and connecting rods. Balance shafts are the same as in M43TU.
Is the n42b20 engine the same as the m43tu?
That makes the engine much lighter than previous inline-four engines from BMW. There are new 90 mm stroke crankshaft, pistons and connecting rods inside the cylinder block. The N42B20 engine still has balancing shafts, and they are the same as in the M43TU engine. Engineers made some small changes just to fit them into the new cylinder block.