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The BMW Range
3 Series
E46
Engine Virating
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<blockquote data-quote="jarance" data-source="post: 408262" data-attributes="member: 21"><p>Engine vibrating at at RPM is due to misfiring. Misfiring can be cause by the following problem.</p><p></p><p></p><p>1. Spark plug worn out.</p><p>2. Fuel injector choked</p><p>3. Ignition coil malfunction.</p><p>4. insulation breakdown in the HT connector to spark plug</p><p>5. Loose connection to the spark plug</p><p></p><p>To check the and isolate the problem, do the following:-</p><p>1. Remove cover and access the spark plug and the HT cable.</p><p>2. Start engine.</p><p>3. Remove connector mark "7" from the 1st spark plug. </p><p>4. Check whether there is any change in engine vibration.</p><p>5. do step 3 until find the port that did not have any changes.</p><p></p><p>Note: If there is no change in the rpm or vibration, that is the one that is faulty. Once, you identify the port that is faulty, open it up and check from there.</p><p></p><p>Spark plug and ignition coil. It is individual.</p><p><a href="http://bmwfans.info/parts/catalog/E46/Sedan/Malaysia/328i-M52/RHD/N/1999/september/browse/engine_electrical_system/ignition_coil_spark_plug/" target="_blank"><img src="http://static.bmwfans.info/images/epc/MTIyMzlfcA==.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p><a href="http://bmwfans.info/parts/catalog/E46/Sedan/Malaysia/328i-M52/RHD/N/1999/september/browse/engine_electrical_system/ignition_coil_spark_plug/" target="_blank">Ignition coil/spark plug</a> - <a href="http://bmwfans.info/parts/catalog/" target="_blank">BMW parts catalog</a></p><p></p><p>Fuel injectors</p><p><a href="http://bmwfans.info/parts/catalog/E46/Sedan/Malaysia/328i-M52/RHD/N/1999/september/browse/fuel_preparation_system/valves_pipes_of_fuel_injection_system/" target="_blank"><img src="http://static.bmwfans.info/images/epc/MTg4MzlfcA==.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p><a href="http://bmwfans.info/parts/catalog/E46/Sedan/Malaysia/328i-M52/RHD/N/1999/september/browse/fuel_preparation_system/valves_pipes_of_fuel_injection_system/" target="_blank">Valves/pipes of fuel injection system</a> - <a href="http://bmwfans.info/parts/catalog/" target="_blank">BMW parts catalog</a></p></blockquote><p></p>
[QUOTE="jarance, post: 408262, member: 21"] Engine vibrating at at RPM is due to misfiring. Misfiring can be cause by the following problem. 1. Spark plug worn out. 2. Fuel injector choked 3. Ignition coil malfunction. 4. insulation breakdown in the HT connector to spark plug 5. Loose connection to the spark plug To check the and isolate the problem, do the following:- 1. Remove cover and access the spark plug and the HT cable. 2. Start engine. 3. Remove connector mark "7" from the 1st spark plug. 4. Check whether there is any change in engine vibration. 5. do step 3 until find the port that did not have any changes. Note: If there is no change in the rpm or vibration, that is the one that is faulty. Once, you identify the port that is faulty, open it up and check from there. Spark plug and ignition coil. It is individual. [url=http://bmwfans.info/parts/catalog/E46/Sedan/Malaysia/328i-M52/RHD/N/1999/september/browse/engine_electrical_system/ignition_coil_spark_plug/][img]http://static.bmwfans.info/images/epc/MTIyMzlfcA==.png[/img][/url] [url=http://bmwfans.info/parts/catalog/E46/Sedan/Malaysia/328i-M52/RHD/N/1999/september/browse/engine_electrical_system/ignition_coil_spark_plug/]Ignition coil/spark plug[/url] - [url=http://bmwfans.info/parts/catalog/]BMW parts catalog[/url] Fuel injectors [url=http://bmwfans.info/parts/catalog/E46/Sedan/Malaysia/328i-M52/RHD/N/1999/september/browse/fuel_preparation_system/valves_pipes_of_fuel_injection_system/][img]http://static.bmwfans.info/images/epc/MTg4MzlfcA==.png[/img][/url] [url=http://bmwfans.info/parts/catalog/E46/Sedan/Malaysia/328i-M52/RHD/N/1999/september/browse/fuel_preparation_system/valves_pipes_of_fuel_injection_system/]Valves/pipes of fuel injection system[/url] - [url=http://bmwfans.info/parts/catalog/]BMW parts catalog[/url] [/QUOTE]
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