Karlos28

Well-Known Member

• Mar 11, 2011

• #1

hi there, need to adjust the clearance on in the valves in my 19j.

just wanted to kno if i need to get different sized spacers to fit in? or are they adjustable?
cheers
karl

 

bevhelee

Well-Known Member

• Mar 11, 2011

• #2

Adjustable, 20 thou I believe when cold.

 

Karlos28

Well-Known Member

• Mar 11, 2011

• #3

perfect cheers, dont need any fancy tools do i?

 

bevhelee

Well-Known Member

• Mar 11, 2011

• #4

No, lift off the rocker cover and then you'll need a screwdriver and a 7/16 ring spanner if I remember correctly

 

Karlos28

Well-Known Member

• Mar 11, 2011

• #5

ta la! il go and get meself another rocker gasket. cheers fella.

 

Karlos28

Well-Known Member

• Mar 11, 2011

• #6

20 thou is about .5mm isnt it?

 

bevhelee

Well-Known Member

• Mar 11, 2011

• #7

Do you know how to adjust them?

 

Karlos28

Well-Known Member

• Mar 11, 2011

• #8

not really, rough idea. move the cam so the valve is shut ans the cam is furthest away from the valve, then slide the old feeler gauge in there?

 

bevhelee

Well-Known Member

• Mar 11, 2011

• #9

Karlos28 said:

20 thou is about .5mm isnt it?

Click to expand...

Not sure, ask google

 

Karlos28

Well-Known Member

• Mar 11, 2011

• #10

yehh it is 0.507. is that about the right method for adjusting them?

 

bevhelee

Well-Known Member

• Mar 11, 2011

• #11

If you call the front ones 1&2 and back 7&8, when front are rocking, adjust back, 3&4 rocking adjust 5&6 etc

 

Karlos28

Well-Known Member

• Mar 11, 2011

• #12

ahh youv lost me abit there. i get ther 1&2, 3&4.. ect.. by rocking you mean both valves shut and the cam not touching the tappets? do you mean do a cylinder at a time? sorry if im just being stupid!

 

jamesmartin

Well-Known Member

• Mar 11, 2011

• #13

the gap is 10 thou you adjust by number nine method 1 front 8 rear when rocker fully down ie 3 adjust 6 4 adjust 5 8 adjust1 etc

 

Karlos28

Well-Known Member

• Mar 11, 2011

• #14

still confused! so it is sposed to be 10 or 20 thou??

do i check the clearances when the cylinder is at TDS?

 

L

lynall

Well-Known Member

Full Member

• Mar 11, 2011

• #15

Google rule of nine
Always adds up to 9 so when valve one fully open adjust 9, 4 fully open adjust 5 etc etc.
General rule most engines number 1 valve is the cam chain/belt end
Roughly 4o thou to the millimetre so yes 20thou is 0.5 mm
Sounds like quite a large clearance is that what the manual says?
The trucks i service at work are mainly 0.50mm and thats quite a large gap for a small engine like yours.
you sure its not 0.20mm ie 8ish thou?


Lynall

 

Last edited: Mar 11, 2011

jamesmartin

Well-Known Member

• Mar 11, 2011

• #16

its 10 thou red block tdi 8 thou allways has been .25mm forthose that use metric

 

Karlos28

Well-Known Member

• Mar 11, 2011

• #17

ahh i get it! nice one fellas. il go for .25 mm then ;-)

cheers again!

 

Karlos28

Well-Known Member

• Mar 27, 2011

• #18

Well I went to adjust them today and the timing must be well out sOme how!? When valve 1 was fully open I expected to be able to check valve 8, but it was slightly open?? I think it was valve 6 that way right at the top!? Any ideas?

 

Lowlight

Active Member

• Mar 27, 2011

• #19

When valve 8 is fully open (spring fully compressed) check cylinder 1 - clearance should be 0.25mm.

You then do the same for the following valves:
No 6 closed = Check No 3
No 4 = No 5
No 7 = No 2
No 1 = No 8
No 3 = No 6
No 5 = No 4
No 2 = No 7

I did mine yesterday, they were well out and it made quite a difference

 

Karlos28

Well-Known Member

• Mar 27, 2011

• #20

Yeh thats dosent work for mine.. Spring fully compressed on number 1 number 8 is still slightly compressed...