Question about 2006 BMW 545i

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12 cylinder 8 series. 3rd motor. Put a motor in runs good 2 days. Then start it a lod knock that vibrates he car and after that a valve tap. What do you think that is? 1997 model.

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Your piston arm probably broke.

Posted on May 12, 2009

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2001 kia sephia if the knock sensor is bad will it make the engine tap ?


It sounds like valve clatter. If you are also noticing black smoke from the exhaust, diminished engine response, etc then it has a faulty valve. I have to be honest. The Kia you have is not known as a good car. It was made before Hyundai took over for quality control. I would seriously consider selling the car while it still runs. I am sorry for this answer, but I own a 2012 Kia Optima and have heard service writer horror stories on the Sephia. Again, I apologize for my recommendation.

Jun 13, 2015 | 2001 Kia Sephia

1 Answer

How to find codes for check engine light on


Check Engine Light Codes and Meanings
Long blinks Short blinks Problem
1 1 Camshaft position sensor
1 2 Mass air flow sensor
1 3 Engine coolant temperature sensor
1 4 Speed sensor
1 11 EVAP control system (flow)
1 14 Fuel injection system right bank (too rich)
1 15 Fuel injection system right bank (too lean)
2 1 Ignition circuit
2 3 Closed throttle position switch
2 5 Idle speed control
2 9 Fuel Injection system left bank (too rich)
2 10 Fuel Injection system left bank (too lean)
3 1 ECU
3 2 Exhaust gas recirculation system flow problem
3 3 Front left O2 sensor
3 4 Knock sensor
3 5 Exhaust gas recirculation temperature sensor
3 6 EGRC-BPT valve
3 7 Closed loop control
3 8 Closed loop control
4 1 Air intake temperature sensor
4 2 Fuel tank temperature sensor
4 3 Throttle position sensor
4 7 Crankshaft position sensor
5 3 Front right O2 sensor
5 4 Automatic transmission control unit
6 3 Cylinder #6 misfire
6 4 Cylinder #5 misfire
6 5 Cylinder #4 misfire
6 6 Cylinder #3 misfire
6 7 Cylinder #2 misfire
6 8 Cylinder #1 misfire
7 1 Multiple cylinder misfire
7 2 Three way catalytic converter (right side)
7 3 Three way catalytic converter (left side)
7 4 Evaporative emission control system pressure sensor
7 5 Evaporative emission control system
7 7 Rear O2 sensor
8 1 Vacuum cut valve bypass valve
8 2 Crank position sensor
8 3 Absolute pressure sensor
8 4 Automatic transmission control unit
8 6 Evaporative emission canister purge control solenoid valve
8 7 Evaporative emission Canister purge control solenoid valve circuit
9 1 Front Right O2 sensor
9 3 Evaporative emission Canister vent control valve
9 5 Crankshaft position sensor
9 8 Engine coolant temperature sensor
10 1 Front left O2 sensor
10 3 Park and Neutral position switch
10 5 EGRC solenoid valve
10 8 Evaporative emission canister purge volume control valve
11 1 Inhibitor switch
11 2 Revolution sensor
11 3 Improper shifting to first gear (Automatic transmission)
11 4 Improper shifting to second gear (Automatic transmission)
11 5 Improper shifting to third gear (Automatic transmission)
11 6 Improper shifting to fourth gear (Automatic transmission)
11 7 Solenoid valve lock up function
12 1 Shift solenoid B (Automatic transmission)
12 3 Overrun clutch solenoid valve (Automatic transmission)
12 4 Torque converter clutch solenoid valve (Automatic transmission)
12 5 Line pressure solenoid valve (Automatic transmission)
12 6 Throttle position sensor (Automatic transmission)
12 7 Engine speed signal
12 8 Fluid temperature sensor
13 2 MAP/BARO Switch Solenoid Valve
13 5 Fuel pump control module
13 8 Cooling fan

Dec 12, 2011 | 1995 Nissan Maxima

1 Answer

My Chrysler 300m is vibrating (minor shaking because it's more than a vibrate) when i'm idling and drinking gas like crazy. About 8-9 months ago the timming belt went out and I got it and the water pump...


Please use a different shop in the future. The fact is if that timing belt broke while the motor was running you most definitely bent a valve or two if not all of them. The 300M didn't use no contact or lock up valves which would have locked them up out of the way when the belt broke. The mechanic that did the repair should have had the head pressure tested and inspected all of the valves. It is possible the problem you are having is a few valves not operating properly however a more likely source is going to be a Crank position sensor or Cam position sensor that is damaged or the internal anti-knock assembly isn't in time with the rest of the motor. There is a slim possibility that when he did the repair he removed the motor and then failed to get it positioned correctly in the motor mounts or possibly didn't get the base cross connecting plate put up correctly as far as being tightened and torqued in. Do a compression check and leak down test on the cylinders to make sure you don't have a leaking valve then start looking at the other items. I seriously recommend you use a different shop than the one that did the timing belt because at this point there should be no question about the valves or rings in that motor. Since the motor was opened up they should have replaced the rings and checked the valves before they ever put it back together.

Apr 12, 2011 | 1999 Chrysler 300M

1 Answer

BMW 1993 320i deep high engine knocking problem.


If its knocking its cylinder related, if its tapping its valve top end related.

Apr 17, 2010 | 1993 BMW 3 Series

1 Answer

I need the firing orderfor a 1941 series 61 cadi. flat head v 8


Another Alternate Method For In-Line Engines An alternate and perhaps somewhat quicker method is to follow the accompanying diagram which is arranged so that any piston can be at top center to start.

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On Straight 8 Cars

Start with the cylinder in the firing position (piston up, both valve lifters down) and work around the diagram in the direction of the arrow. Count the cylinder in firing position as the first cylinder.
1st—Both.
2nd—Exhaust.
3rd—Inlet.
4th—Inlet.
5th—Exhaust valve.
6th—Exhaust valve.
7th—Inlet.
8th—None.
Rotate the engine one full turn to bring the same pair of pistons to top center, but now the opposite cylinder will be in firing position. Again start with the cylinder in the firing position and again work around the chart in the direction of the arrow.

Nov 13, 2009 | Cadillac V-Series Cars & Trucks

2 Answers

Engine has knocking noise. Oil is good. Started


Engine knock Huh? In order to qualify the term "Knock", Let me get you to perform some simple task/observation. Typically, if you hear a noise on top of your motor that can be described as a light knock, usually going tap, tap, tap, tapping along at double the tempo, of your motor spinning, Your oil pump may be having trouble getting oil to the top where the valve's and rocker arms are. If you hear a "Knock" by bending over or kneeling beside one of your "front wheel well's"and stick your head up to the well, providing a vantage point to "hear" whats going on at the lower part of the engine. A knock from here will/can indicate a potentially overheated, under lubricated, rod or crank bearing that could seize the motor. This (theretical) crank bearing would be sounding off at half the tempo of the rocker arms above., with a deep, dark klunk that would defintly present itself as the sort of noise that damages metal parts. Now, that being said.....common sense goes a long way, people....1.) Most people are aware of the maintenance that has been performed on a particular engine, the quality and quantity of that maint. and when the last time it was ran out of oil or water. For those who fall into the " lack of maintenence" catagory, you probably already know why your engine or driveline sound as it does. If you happen to take particulary good care of your car, there is a good chance that whatever noise or "happening" might be going on, it'll be much easier to remedy. There are always exceptions to every rule. Remember, its not what will happen, it's what can happen. Take care of your car, and it will take care of you. Theroad

Jul 16, 2009 | 1997 Geo Metro

1 Answer

3.3L engine jumped timing


sound like compression ring gone pressure goes in oil if noise i dont think it worth to fix that motor a good second hand one there gone engine normally hope it FIXYA our problem thanks pierre

Jul 04, 2008 | 1999 Dodge Grand Caravan

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