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The BMW Range
1 Series
BMW E87 N46 Engine and Transmission overhaul
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<blockquote data-quote="astroboy" data-source="post: 739508" data-attributes="member: 4527"><p>U can try just replacing valve seals.. many of us N46 did the job which may set you back circ RM1.5k {parts + labor) just to replace seals that cost about RM70 for 16 pieces.</p><p></p><p>Need to open valve cover and remove both cams with a special bracket-like tool.</p><p></p><p>Mine was +1L every 2 tanks of fuel used. Problem solved after the job.</p><p></p><p>Disclaimer: the job may not solve the problem if leakage is from loose piston rings. But our mileage was about 100k km or less.. So we are betting on piston rings in good order. Otw, top overhaul necessary.. You are looking at RM3k of damage to wallet.. I don't like foreman open pistons.. too many things can go wrong if not reassemble properly i.e. pre-torque header skimming which I don't think workshop will do.. too much work.</p></blockquote><p></p>
[QUOTE="astroboy, post: 739508, member: 4527"] U can try just replacing valve seals.. many of us N46 did the job which may set you back circ RM1.5k {parts + labor) just to replace seals that cost about RM70 for 16 pieces. Need to open valve cover and remove both cams with a special bracket-like tool. Mine was +1L every 2 tanks of fuel used. Problem solved after the job. Disclaimer: the job may not solve the problem if leakage is from loose piston rings. But our mileage was about 100k km or less.. So we are betting on piston rings in good order. Otw, top overhaul necessary.. You are looking at RM3k of damage to wallet.. I don't like foreman open pistons.. too many things can go wrong if not reassemble properly i.e. pre-torque header skimming which I don't think workshop will do.. too much work. [/QUOTE]
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