So I've looked over the link from another thread.

http://www.audi-sport.net/xf/threads/how-to-guide-pd-tdi-injector-adjustment-clearance-lash.183040/

But I'm still a little bit unsure, so just wanting to confirm...

Turn the engine over until the rocker for the injector I'm adjusting is at its highest point, So not pressing down very much on the injector?

Crack off the 18mm locking nut

Put the Allen key into the hole and unwind it all the way, then start winding it down by hand lightly until it touches and stops basically only using my fingers.

Wind it back 180° (so basically isn't touching?!) and tighten up the locking nut?

It doesn't seem right so wanting to check with people that have done it before.

Thanks

That's exactly what I did. still unsure if they're perfect though. But that's the method I used.

Thanks, will see what other people say also

You want it so the cam lobe for the injector is at full lift meaning it will be fully open once adjusted correctly.

You can wind the screw in with the end of an allen key as you will feel a noticeable difference when it goes tight at the bottom. Back it off 180° and tighten the lock nut up.

You want it so the cam lobe for the injector is at full lift

So the rocket arm needs to be fully down when adjusting it?

The instructions are confusing, however I got to the bottom of it.

Turn the crankshaft clockwise and bring the lobe of the camshaft to its highest point, check this out by using a DTI gauge as per the link, the adjuster screw at the front of the engine is now at its lowest, with the nut undone, use an Allen key and turn the adjuster clockwise, this is now compressing the spring, keep turning until you can feel it tightening up and stop when you feel an imminent definite stop, using a protractor gauge, undo the adjuster by 180' degrees, then tighten up the lock nut to 30nm.

Then do an ECU reset.

As well as making the engine perform better it gives better mpg.

DB.

Ah interesting, so your method is different to how I thought and how gfwc done his then, with the adjuster at its highest point and adjusting it loosely onto the injector, rather than the rocker at its lowest point and turning the Allen key until it stops basically...

rocker fully off. So not touching the the cam lobe at its highest point

Edited 5 June, 201511 yr by k666sdb

Hutchy, think of it like this, the unit injector is a syringe with a spring, when the cam turns it pushes down the plunger via a big roller rocker to inject fuel at VERY high pressure, all you're doing is making sure that the plunger in the syringe isn't hitting the bottom of the syringe body and binding forcing the cam to try and bend the rocker, it really isn't that complicated, you adjust the screw until you can feel the plunger hit the bottom, then you back it off half a turn. This adjustment simply ensures that the cam isn't binding while making certain you get a full shot of fuel, you don't need a protractor, that's over-egging the omelette.

I think I get it now, I just think a lot of other people don't understand it either.

Some say adjust it with the injector being squashed to its lowest point, then adjust.

Others say do it when the injector is at its least squashed point.

On reading the VAG literature about the lash adjustment it clearly states to replace the Adjuster Ball End (ABE) screw and the Pins which go between the ABE and the Injector, luckily for me I took notice, on comparing the old with the new, mine were half worn away (95,000 miles), however by the time you buy 6 stretch bolts, 3 adjusters & 3 pins they totaled up to £130 ! But it's money well spent, I am now back to my old MPG figures.

 

Hutchy, this is correct - Some say adjust it with the injector being squashed to its lowest point, then adjust.

 

DB.

Some say adjust it with the injector being squashed to its lowest point, then adjust.

Others say do it when the injector is at its least squashed point.

 

I get that, how can we know how much to adjust the lash unless we compress the plunger? We can't is the simple answer.

 

This is nothing like adjusting valve lash which is done to ensure that the valve stays firmly shut until the cam lifts it, in fact it's the total opposite.

How does this sound.

So with the injector fully squashed, crack off the 18mm locking nut, wind down the Allen key stud until it stops completely, wind back 180° and tighten 18mm nut.

Another question, obviously squashing the injector to much will damage it. Can I damage it with just my hands and an Allen key?

People say you will know when it's compressed, which I might... But I haven't done it before so don't know!

You can't damage it with your hands, there is a possibility that it is already too tight, so try loosening it first then wind it in until it touches bottom before backing it out half a turn.

It goes noticeably harder to turn when you reach the the bottom of the adjustment, so unless you are very heavy handed you're unlikely to wind it too far.

Will do, thanks.

I'll take pictures and make a how to guide for briskoda, needs to be done once and for all... That link seems good but I know for a fact people are doing it wrong.

...oh the irony..

...oh the irony..

 

Will do, thanks.

I'll take pictures and make a how to guide for briskoda, needs to be done once and for all... That link seems good but I know for a fact people are doing it wrong.

...oh the irony..

And don't forget to include that certain parts need replacing, otherwise as I experienced it's useless resetting the injection lash.

 

DB

I will do mate, everyone will have an input I'm sure, I'd be a hypocrite not to.

I know what you mean about the price of bolts you stated earlier, cost me over £100 for bolts the other day!

Think I'll try this

Then do an ECU reset.

DB.

ECU is not self learning on the PD130, so reset not needed.

I'm definitely going to do this one day! Is it worth getting a dial gauge to set the highest point or is it really obvious?

Through at least five years in total owning various pd engines,I keep learning little tweaks like this and it does surprise me how many things need to be done!

I'll explain some good tips in my how to guide so extra tools arnt needed.

Make sure it's the inlet cam lobe that's at its highest point I use this guide and it's works perfectly lost count of how many sets of PD injectors I've fitted and adjusted now

http://forums.tdiclub.com/showthread.php?t=306911

On and remove the glow plugs it's makes turning the engine over easier

Make sure it's the inlet cam lobe that's at its highest point I use this guide and it's works perfectly lost count of how many sets of PD injectors I've fitted and adjusted now

http://forums.tdiclub.com/showthread.php?t=306911

What benefits/differences have you noticed after setting them?