Kirill

Here's translation from Russian of the article originally written by A.V. Perunov from www.auto.vl.ru Original address of the Russian version is http://enc.auto.vl.ru/6421/ To replace old spare plugs on Neo series Engines (RB20DE or RB25DE or similar that were installed on R34 Skylines and some other vehicles (Stagea, Laurel) you will need: wrenches, screwdrivers, pliers plus a hex-nut wrench. First of all, you should remove the plastic cover that carries Neo6 label and see the following: LARGER PICTURE IS HERE Now, the part noted as "1" in the circle - is our aim - that cover hides coils and spark plugs. Firstly remove nipple 1 by disconnecting clips on both sides of it with pliers. Then disconnect nipples 2 and 3 at the sides indicated by arrows. Important note here - the engine should be cool as these nipples are part of cooling system and if you disconnect them on a warm engine, some amount of cooling fluid may spill. It's better to open the radiator cap before disconnecting the nipples too to alter the pressure. Disconnect connectors marked 4 (you may want to remember them by colors, however, it's rather difficult to confuse them). Disconnect clamp 5 and onscrew bolt 6 - now you can move airduct apart in the direction of green arrow. Diconnect nipples 7 and 8 and two nipples marked 9 - remember that one of them that is closer to firewall has a clamp. Disconnect two sockets marked 10. Thay are different colors. Now, disconnect two more sockets marked 11 on the following two pictures (note that firewall is on the left side of those pictures: Be careful not to brake them - they should be disconnected in the directions marked by arrows. There is no need to remove the metal part that holds the sockeit in place - it will be later removed together with cover. The sign "!" indicates the place where the wire should be disconnected from the cover. Unscrew 6 bolts holding the intake manifold in place (marked 12 on the first picture). Remove manifold carefully in order not to damage the gasket. Put the manifold to the left side. Now it's time to remove the cover. Here you will need a hex-wrench. After unscrewing all bolts holding the cover, move it towards the firewall a bit and then take out. After that, you should see something like this - we're almost there =) Unscrew bolts holding coils in their places, disconnect coils from the wire and - here we are - time to use the spark-plug wrench =) After changing plugs check coils as described here http://www.skylineowners.com/forum/showthread.php?t=43555 and assemble everything back. The whole procedure takes about one hour and a half or so. P.S. Me personally didn't do this yet, going to try on Sunday - perhaps after that there will be some minor changes from my own. P.P.S. My technical English is not very good - if you have some corrections regarding the terms - please tell me. P.P.P.S. Neither me nor original author bears any responsibility for any concequencies of following the proceduredescribed above. This is for informational purposes only. Whatever you do, do it at your own risk.

Could you plese mail me the Word doc to [email protected] ? ;-)

I got the same "Error 21" yesterday. the engine sounds as usual and but for the "Check engine" light I wouldn't have noticed any difference. I'm going to run power balance check one of these days - hope it will help to find out whether the prob is in one of coils and in which one. BTW, how to get to the coils and spark plugs on R34? I'm affraid that I won't fix the problem without getting to them, but I absolutely have no clue on how to remove part of intake manifold (and what exact part shall I remove to get there).

Hi there. How can I get to the spark plugs on Neo6 (R34 RB25DE). It looks like there are loads of parts to remove first. What exactly and in which order shall I unscrew in order to get plugs without destroying the engine? I saw the manual for RB25DET, however in Neo6 case there are much more things to do...