samauty 0 Posted January 10, 2008 Anyone know the procedure for setting the valve clearances on a 1.6 8v xu? Ive lost my haynes manual What are tolerances when hot? When the engine is warm I cant help but think my engine sound like a bag of spanners......... thanks! Share this post Link to post Share on other sites
Tom Fenton 1,526 Posted January 10, 2008 Measure clearances, take cam out, measure shims, calculate new size of shims needed, order from Peugeot, wait a few weeks probably if my local dealer is anything to go buy, pick up new shims, fit to head, put cam back. Not that difficult but not like a TU where you can just adjust the tappets. Usually if the valve clearances are not right they sound worse when cold? Share this post Link to post Share on other sites
samauty 0 Posted January 10, 2008 yeah i thought the same.... but its sounds very tappety when hot..... Share this post Link to post Share on other sites
pug_ham 241 3 Cars Posted January 10, 2008 Check its not the exhaust manifold thats cracked which sounds tappetty when it blows. I had my valve clearances done thinking these were the cause & it was just the same when they were set correctly. If you have a decent Pug dealer they can get the shims next day, mine did. A new exhaust manifold (with pug gaskets) fixed it. BTW, always check the valve clearances on a cold engine. Graham. Share this post Link to post Share on other sites
ifcho 0 Posted January 10, 2008 If the noise gets worse when the engine is hot, you may need an oil change. Share this post Link to post Share on other sites
samauty 0 Posted January 10, 2008 i checked today that the oil spray bar was not blocked and it wasnt. Also had a good luck at the manifold and couldnt see any cracks. And theres no blowing from the exhaust when the engine is cold. Ill try an oil change next. What is the recommended oil? I am currently using 10w40. Maybe 15w40 could be slightly thicker and hence stop my tapping noise? Share this post Link to post Share on other sites
pug_ham 241 3 Cars Posted January 12, 2008 Have you checked around the mainfold & downpipe when the engine is warm / hot? Either oil is fine for use on your car so shouldn't make any difference to the tappet noise imo. Best get the feeler guages out & check your valve clearances. Grasham. Share this post Link to post Share on other sites
samauty 0 Posted January 12, 2008 Yep checked when the engine was hot after a run and iam sure its the valve clearances. It sounds very tappety from the rocker cover area. Exhaust manifold looks fine and gaskets do too. I did put a later manifold on with the strengthening bits in when my old one was cracked Whats the preceedure for adjusting. Starts on valve 1, check valve 8 etc. What too are the clearances for a 1.6? Sam Share this post Link to post Share on other sites
Richie-Van-GTi 70 2 Cars Posted January 12, 2008 .2 and .4 seem to ring a bell with me but I dont have a manual to confirm this. Sure its not the injectors or exhaust manifold gaskets. Easy test for gaskets is to hang a bit of toilet tissue near them, any blows will soon show. Share this post Link to post Share on other sites
carbers205 1 Posted January 12, 2008 Clearances on cold engine are 0.15 to 0.25mm inlet and 0.35 to 0.45 exhaust. Share this post Link to post Share on other sites
Mattsav 1 Posted January 12, 2008 Set the clearances at 0.2mm inlet and 0.3mm exhaust. The std specs for the exhaust clearance are very large which always makes them tappety Share this post Link to post Share on other sites
samauty 0 Posted January 12, 2008 haha! cheers mate for the tip. It is sometimes hard to tell whether or not there is a leak - will double check now though. Thanks for the clearances too. This forum is so helpful - i wish id only found out about it earlier! Share this post Link to post Share on other sites
samauty 0 Posted January 13, 2008 i am still having this starting problem when the car is left for more than 10 mins when hot. Its also getting hard to start when its cold too. Do you rekon incorrect valve clearances could be related? Share this post Link to post Share on other sites
pug_ham 241 3 Cars Posted January 14, 2008 Do you rekon incorrect valve clearances could be related? Yes, valve clearances can make the car harder to start at all times, hot or cold. Graham. Share this post Link to post Share on other sites
ifcho 0 Posted January 14, 2008 Measure clearances, take cam out, measure shims, calculate new size of shims needed, order from Peugeot, wait a few weeks probably if my local dealer is anything to go buy, pick up new shims, fit to head, put cam back. Not that difficult but not like a TU where you can just adjust the tappets. Usually if the valve clearances are not right they sound worse when cold? Don't you re-use the old shims? When we changed the shims, we took all out, measured them, then calculated the needed shims for the correct valve clearances and took some of the old ones, that would do the job. The rest were ordered. Share this post Link to post Share on other sites
pug_ham 241 3 Cars Posted January 14, 2008 Don't you re-use the old shims? When we changed the shims, we took all out, measured them, then calculated the needed shims for the correct valve clearances and took some of the old ones, that would do the job. The rest were ordered. Yes you can do this, I swapped positions for some when I did the valve clearances on my STDT recently. Changed from needing seven shims to just the three. Graham. Share this post Link to post Share on other sites
