landyman247 Posted February 4, 2012 Share Posted February 4, 2012 Hi all, fairly new to world of mechanics so sorry if wrong terms used So i have new rocker arms and currently none of them are touching the valves or tops of pushrods (they can be rocked from side to side) i know about the rule of 9 but how do i know where to start the procces as currenly i cant see if a vavle should be closed. hope someone can help want to get out in the snow lol Quote Link to comment Share on other sites More sharing options...
Boydie Posted February 4, 2012 Share Posted February 4, 2012 Yes the rule of 9 applies however there is a correct sequence to carry this out. Valve fully open Valve to be adjusted 6 3 4 5 7 2 1 8 3 6 5 4 2 7 8 1 A dial guage is a good idea to ensure that the "valve fully open" push rod is actually at the top of its stroke. another good idea is to replace the 8 small valve caps at teh same time as they take a hell of a hammering and have been known to disintegrate Tappet gap is 0.2mm Quote Link to comment Share on other sites More sharing options...
elbekko Posted February 5, 2012 Share Posted February 5, 2012 A dial guage is a good idea to ensure that the "valve fully open" push rod is actually at the top of its stroke. That's not at all necessary. The sequence is designed so that the rocker to be adjusted is on a low spot on the cam, thus remaining free for quite a while. Just keep an eye on the valve that should be open, and when it starts going back up you start the adjustment. Quote Link to comment Share on other sites More sharing options...
sirjames0_1 Posted February 5, 2012 Share Posted February 5, 2012 Sorry to jump in, but should the clearances be checked with the engine hot, or cold? I've just done mine, but the engine now sounds more 'clattery' than it did before! Quote Link to comment Share on other sites More sharing options...
western Posted February 5, 2012 Share Posted February 5, 2012 Sorry to jump in, but should the clearances be checked with the engine hot, or cold? I've just done mine, but the engine now sounds more 'clattery' than it did before! Cold, you cannot burn yourself then & workshop manual says cold, Quote Link to comment Share on other sites More sharing options...
Jim1 Posted February 5, 2012 Share Posted February 5, 2012 Do they need to be done in that order? I did mine from back to front 8 open Adjusted 1 does it make a difference Quote Link to comment Share on other sites More sharing options...
western Posted February 5, 2012 Share Posted February 5, 2012 start at number 1 forward most valve & work toward the rear valve numer 8. easy to keep track off which valve has been reset then. Quote Link to comment Share on other sites More sharing options...
mmgemini Posted February 5, 2012 Share Posted February 5, 2012 I don't use the nine rule. Turn engine to TDC. Are the valves rocking on No 4 or No1 ? Which ever they rock on set the other two...Then turn the engine until another pair of valves rock, setting the opposite pair of valves. Set hot or cold I believe the book says. Quote Link to comment Share on other sites More sharing options...
western Posted February 5, 2012 Share Posted February 5, 2012 as I posted above LR workshop manual for both Tdi engines says set valves with engine cold. Quote Link to comment Share on other sites More sharing options...
sirjames0_1 Posted February 5, 2012 Share Posted February 5, 2012 Thanks Western Quote Link to comment Share on other sites More sharing options...
landyman247 Posted February 5, 2012 Author Share Posted February 5, 2012 ok thanks for all the advise, put all back together today and though all was good. ran up to temp and stayed there nicley then started to run lumpy and now seems to run like it all the time. starts and stops ok. no creamy liquid or smoke. could it be head gasket or badly adjusted valves ??? Quote Link to comment Share on other sites More sharing options...
rick Posted February 5, 2012 Share Posted February 5, 2012 I don't use the nine rule. Turn engine to TDC. Are the valves rocking on No 4 or No1 ? Which ever they rock on set the other two...Then turn the engine until another pair of valves rock, setting the opposite pair of valves. Set hot or cold I believe the book says. Yes, the easiest way IMO Quote Link to comment Share on other sites More sharing options...
Briarston Posted February 5, 2012 Share Posted February 5, 2012 Both methods of adjusting are fine, probably a matter of preference. If using the "rule of 9" you can start anywhere, and adjust the appropriate valve whenever it's mate is open, as they open. Otherwise, going in strict order, 1,2,3, etc involves a lot of engine turning. Do write out the full list on paper and mark them off as you adjust them, whichever way you go. It's easy to get lost! Quote Link to comment Share on other sites More sharing options...
Boydie Posted February 6, 2012 Share Posted February 6, 2012 If you start at number 6 as per the sequence above and adjust valve 3 then the next valve to come up for adjustment is valve 5 then 2 etc. You can start at any valve you want to using the "9" rule but you end up having to turn the engine over more than is ofherwise nessersary. Its far simpler to start at valve 3 fully down, adjust valve 6 gap etc. Quote Link to comment Share on other sites More sharing options...
landyman247 Posted February 6, 2012 Author Share Posted February 6, 2012 so has anyone got any ideas as to why it could be running so lumpy after new head ?? Quote Link to comment Share on other sites More sharing options...
mmgemini Posted February 6, 2012 Share Posted February 6, 2012 Plese don't try the "nine" ruls on a 5, 6, or 8 cylinder engine. I learnt to set tappets on a 5 cylinder WITHOUT feeler gauges, never got them wrong. As for running lumpy. Have you re-checked the tappets ? You could have one tight or slack. Have you cracked each injector pipe in turn to see what it's doing. Which head gasket did you use ? Quote Link to comment Share on other sites More sharing options...
landyman247 Posted February 6, 2012 Author Share Posted February 6, 2012 not tried anything as yet think the bad weather has killed me off man flu is the worst. oh and is a three dot one supplies by turner engineering Quote Link to comment Share on other sites More sharing options...
landyman247 Posted February 7, 2012 Author Share Posted February 7, 2012 Ok so managed to get out to landy this evening. found one loose rocker and an injector not getting fuel (put down toair lock as now working) but still not running rite sounds a bit rough and lumpy and slightly tiny does seem to smoke a bit when you let go of throttle but was still cold and not anymore than i remember. Quote Link to comment Share on other sites More sharing options...
Boydie Posted February 9, 2012 Share Posted February 9, 2012 Are you sure that the timing is right? One cog out on the FIP or the camshaft -- or both and you will have a very lumpy engine, take it for a decent run then check the timing and once its cooled down re-check the valve clearances. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.