mts Posted June 4, 2006 Report Share Posted June 4, 2006 The Mazda Millenia S 2.3L is not a difficult to repair car. By that I mean that service or repair of the Millenia 2.3L does not require any special tools or knowledge beyond that which a good mechanic will already possess. It is; however, a very time consuming car to repair, that along with sky high parts prices, makes it a very expensive car to repair. This valve adjustment will set you back almost $900 and take 2 to 4 days. What's this a picture of? It a jumbled mess! You can't tell what's going on. There are connectors and hoses and solenoids and brackets and harnesses in a big heap. All of this stuff blocks access to the valve covers and must be removed before doing a valve adjustment. Next the pipes and valves for the supercharger must be removed. 41 seals, gaskets and o-rings are required to do a valve adjust. With all of that out of the way we can now see the supercharger and, of course, the valve shims and cams. The valve clearance is the distance between the cam lobe and the valve shim when the tip of the valve lobe is pointing away from the shim. The clearance is measured using feeler gauges, which are thin strips of metal marked with their thickness in thousandths of an inch. The feeler gauges are tried one at a time until one is found that matches the gap between the lobe and the shim. If the clearance is found to be wrong, the shim is removed and measured. If the clearance is too great, desired clearance is subtracted from the actual clearance and added to the current shim thickness to calculate the correct thickness. If the clearance is too small, the current clearance is subtracted from the desired clearance and subtracted from the current shim size. For most cars we have a supply of shims on hand, but for the Millenia, the correct shim must be ordered from the dealer, which means the engine will have to sit apart for 2 days while we wait for the shims to arrive. These are two of the ignition coils. The one on the left was wet with motor oil from a leak from the spark tube seal. The coil was still working OK and the leak that had been soaking it was being fixed. We cleaned the oil up to prevent any further damage and moved it to the front bank where it would be easier to replace if it did develop a problem. Link to comment Share on other sites More sharing options...
mohamedeladawy@hotmail.com Posted June 4, 2006 Report Share Posted June 4, 2006 wow! very helpful mts! Link to comment Share on other sites More sharing options...
///BHRpowered Posted June 5, 2006 Report Share Posted June 5, 2006 indeed, an excellent guide, but why would you do this? the valve adjustment that is, required, maintaince, or upgrade Link to comment Share on other sites More sharing options...
mohamedeladawy@hotmail.com Posted June 5, 2006 Report Share Posted June 5, 2006 info is info. should be pinned. or rather in the technical guides. Link to comment Share on other sites More sharing options...
mts Posted June 5, 2006 Author Report Share Posted June 5, 2006 MOVED. Regular maintenance, upgrade, or required maintenance is often taken on by our readers. Not limping into the stealership to be hooped by the Service Department at Mazda. Link to comment Share on other sites More sharing options...
///BHRpowered Posted June 5, 2006 Report Share Posted June 5, 2006 so if required maintance, how often should this be done? Link to comment Share on other sites More sharing options...
Renboy Posted June 12, 2006 Report Share Posted June 12, 2006 On the milly, next to never. On your M3, every 25K. Link to comment Share on other sites More sharing options...
mts Posted June 12, 2006 Author Report Share Posted June 12, 2006 Exactly Link to comment Share on other sites More sharing options...
///BHRpowered Posted June 15, 2006 Report Share Posted June 15, 2006 On the milly, next to never. On your M3, every 25K. Since I'm now at 24,583 I hope your joking Link to comment Share on other sites More sharing options...
mts Posted June 15, 2006 Author Report Share Posted June 15, 2006 Not likely, Ren does not quibble when it comes to cars Link to comment Share on other sites More sharing options...
Renboy Posted June 15, 2006 Report Share Posted June 15, 2006 On the milly, next to never. On your M3, every 25K. Since I'm now at 24,583 I hope your joking Not joking about the mileage, or the $1700 price tag. It should be covered under warranty though. If it isn't, the mechanic at BMW is going to latinize you. Link to comment Share on other sites More sharing options...
mts Posted June 15, 2006 Author Report Share Posted June 15, 2006 Link to comment Share on other sites More sharing options...
///BHRpowered Posted June 16, 2006 Report Share Posted June 16, 2006 I shall call in the morning Link to comment Share on other sites More sharing options...
latinopikachu Posted January 4, 2007 Report Share Posted January 4, 2007 If it isn't, the mechanic at BMW is going to latinize you. very good description renboy, although i'm not usually THAT aggressive unless bitten anyway, I shall be posting an official mazda instruction guide tomorrow on how to adjust valve lash Link to comment Share on other sites More sharing options...
Recommended Posts