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need valves adjustement haynes page


Bpaccaud

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if someone can send me the Hanes page concerning the valves adjustement procedure, because i don't know which nuts to turn to adjust the play....Never seen model like this system on european car!!!!

furthermore nuts are lock up....

i don't want to make a mistake!

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Ok, see the photo? The top wrench is a 14 mm. it's on the "Stud", witch is threaded into the head and it's height sets the pivot point for the follower.

The lower wrench (17mm) is on the "Lock" witch jams the stud in place.

To adjust, loosen the lock, whilst holding the stud still. Raise or lower the stud to set the clearance between the heel (base circle of the cam and the lash of the follower. Oh, and remove the guide spring on the follower before trying to adjust, as it gets in the way. Needle-Nose pliers does good job at this. (Be sure to put them back when your done!)

Now, here's the trick. As you tighten the lock back down, you'll inadvertently close the gap a little. Learning how to "Feel" the Feeler gauge is beyond my wordsmith skill to describe.

Second problem is, as the engine cools the adjustment changes. If you start with a hot motor, the first few valves end up being far different to the last few you set. I've developed the habit to adjust the valves twice. Once through, then, bring the motor back up to temp, then adjust again in reverse order.

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here we are the tuning is done, not a big probleme finaly, the hardest is to unlock the nuts.

I tune the valve when the engine is cold so no probleme and set 25/100 mm to the exhaust and 20/100 mm to the inlet.

the engine run better now

thanks all

Benoît

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I'm pretty new to working on cars so i'm kinda curious, what is the advantage of adjusting the valves while the engine is hot? If you adjust them to the correct "cold specs" is it going to be as good as a quick job(before the engine cools too much) adjusting them to the "hot specs?"

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Adjusting them while there hot is the best because as you should know metal expands when it gets hot. Since the engine is usually hot when you drive it most it is ideal to adjust to that tempreture to get as close as possible.

I guess it's really a matter of preference but I've always done them while hot.

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