Learn how to diagnose & repair BMW problems:
BMPdesign will help you recognize BMW problems & issues before it is too late. The following tech tips and videos will teach you how to diagnose, and repair your BMW's damaged or worn components.
With over 30 years experience, our videos will give you helpful tips on weaknesses that your specific model may have. Knowing this information in the beginning will save you hundreds of dollars by aiming you in the right direction before you purchase unnecessary parts. Send us a repair request!
With electronic ignition and fuel injection computers that control the engine settings, Performing a (Tune-Up) is nearly non-existent today. Early BMW models allowed for this, but today's modern engines require advanced equipment and training.
The replacement of normal maintenance parts and aftermarket parts will still increase the performance and reduce major problems:
BMW Ignition Parts
Spark Plugs: Removing and inspecting spark plugs tell you a lot about how well the engine is running and what may be causing problems. All spark plugs should be removed and checked every 30,000 miles - This prevents the plugs from seizing in the block.
Distributor Cap & Rotor: Both plastic and deteriorate over time. Cracks may develop, allowing moisture in. The metal contacts on both can then corrode, causing misfiring. These parts should be replaced at recommended intervals or if showing any excessive wear.
Spark Plug Wire Sets: New materials and sizing have reduced failures, but older BMW models will need at least an OEM replacement wires or better, and should be tested for proper resistance before replacement, not necessarily replaced along with the cap, rotor and plugs.
BMW Replacement Filters
Your BMW's longevity is directly related to changing filters on a regular basis.
Oil Filter: An oil filter is to removes soot, rust particles and other solid contaminants from the oil, and are easy installed to help prevent unnecessary engine wear. Oil filters should be replaced with engine oil every 3,000 miles.
Air Filter: An air filter traps dirt through the filtering material. They protect fuel injectors in newer models, and protect the carburetor in older models by preventing dirt from clogging the air bleeds and metering jets. Air filters should be replaced every 20,000 miles but more often if you live or drive in dusty areas.
PCV Breather Filter: The Positive Crank-case Ventilation breather (pcv) filter assures only clean, filtered air is drawn in through the PCV breather. A clogged breather filter prevents the PCV from siphoning away the blowby gases and moisture created by engine combustion, resulting in oil breakdown and sludge buildup. The PCV breather filter should be replaced every 30,000 miles.
Fuel Filter: Fuel contaminants can get into your fuel system and if not trapped by the fuel filter, damaging the injector. In older cars, dirt can plug-up the carburetor. The fuel filter should be replaced every 30,000 miles; however, we recommend a yearly fuel filter change and a change whenever other fuel system parts are replaced.
Automatic Transmission Filter: Filtered transmission fluid transmits energy, plus it cools and lubricates the moving parts of the transmission. A clogged transmission filter can produce transmission slippage, engagement problems and hesitation. Recommended filter be changed every 12,000-15,000 miles to extend the life of your automatic transmission.
BMW Maintenance Parts
These parts have become essential - if you want your BMW to pass emissions the first time around.
Oxygen Sensor (O2 Sensor)
Points to improve your BMW's overall performance, gas mileage, and emissions:
General overall cleanliness of your engine
Regular routine replacement of all filters, lubricants, coolant and the other parts.
General knowledge of BMW Systems before attempting to fix a problem. Be sure to check out our general repair tips for each topic listed.
Your BMW's computer is designed to learn and adjust. The computer may need time to see various parameters before making any permanent setting changes under driving conditions.
BMW Maintenance Tips
Parts you should consider when working on BMW tune up issues:
BMP Design Repair Tech Tips are added regularly. Come back often to check for new BMW Repair topics. These repair tips are designed only as a starting point. Please seek the assistance of a professional BMW mechanic for all repair problems beyond your capabilities.
BMP Design (Bavarian Motor Parts) has been the BMW Auto Parts Headquarters since 1983. Our extensive BMW auto parts online catalog consists of BMW Parts, BMW OEM Replacement Parts, BMW Performance Parts, BMW Accessories, and BMW Tools. Free Shipping on most orders over $150. Please select your BMW below to get started shopping!