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The BMW Range
5 Series
Loss Power
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<blockquote data-quote="525iBoy" data-source="post: 139980" data-attributes="member: 1183"><p>best advise, take it to a good bmw mech who is familiar with your model.</p><p></p><p>He should check the simple stuff first (filter, fuel pump, compression). a good mechanic will know how to do simple test on these and not change parts unnecessarily.</p><p></p><p>Imho: my 1st bet its something electronic since you engine is smooth at idle. Most likely with high few consumption and smooth idle you may be running way too rich. This would be due to the AFM, or Os2 sensor or computer malfunction. my 2nd bet its a fuel problem. </p><p></p><p>Basically its mech, fuel, ignition or electronics. Mech tend to wear gradually and acutally last for ages w/oil changes. elect "go" more suddenly. Fuel (essentially pressure & injector clean) & ignition (essential spark & timing) are quite easily checked. A good mech will diagnose systematically. </p><p></p><p>best wishes!! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="525iBoy, post: 139980, member: 1183"] best advise, take it to a good bmw mech who is familiar with your model. He should check the simple stuff first (filter, fuel pump, compression). a good mechanic will know how to do simple test on these and not change parts unnecessarily. Imho: my 1st bet its something electronic since you engine is smooth at idle. Most likely with high few consumption and smooth idle you may be running way too rich. This would be due to the AFM, or Os2 sensor or computer malfunction. my 2nd bet its a fuel problem. Basically its mech, fuel, ignition or electronics. Mech tend to wear gradually and acutally last for ages w/oil changes. elect "go" more suddenly. Fuel (essentially pressure & injector clean) & ignition (essential spark & timing) are quite easily checked. A good mech will diagnose systematically. best wishes!! :) [/QUOTE]
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