Wobble when idling (faulty injectors) Now Sorted!

[jasper5]

I second what puggy said....I hope they come out very easy and we all wonder what the fuss was about

After the first lot of WD40, try removing the holding bolts and tapping the injector sideways backward and forward before the next lot of WD40.

[OdinEidolon]

my 2.2 HDi wobbles a lot when started cold (<10°C) but not when started with hotter weather (>15°C). I guess this is normal, my gf's car does that even more and has a 1.9 liter 2007 multijet in it. Right?

After some minutes (2-3) it calms down.
However I have noise and vibrations if I push the car too much, and a small loss of power. Scaring stuff, probably due to my dead-then-resurrected and probably-to-be-replaced-since-i-hope-that-it-is-the-problem-and-not-the-high-pressure-pump lift pump.

[plod]

I second what puggy said....I hope they come out very easy and we all wonder what the fuss was about

After the first lot of WD40, try removing the holding bolts and tapping the injector sideways backward and forward before the next lot of WD40.

+1

It's the only thing putting me off getting a 2.2HDi
I'd of had that 407 SW XS Sport 2.2 Bi-turbo regardless and chanced it, but it's putting me off a 406 2.2
Shame, as there are a few cheap ones popping up on the bay lately

[Doggy]

After the first lot of WD40, try removing the holding bolts and tapping the injector sideways backward and forward before the next lot of WD40.

I'll give it a try, but note the little black plastic bush around the top of the stem, (just below the clamping collar), which I guess is there to stop the injector stem rubbing on the bore of the hole it sits in. Don't care about the ones in there as I have four on the replacement injectors, but I'd rather not break them up and have the debris introduce itslef to M. le Piston et les quatre petits soupage.

Right now, Doggy workshops are constructing, 'TMOASH', (The Mother Of All Slide Hammers).

Odin, mine didn't always 'wobble', I first noticed it early in 2010 and it has gradually deteriorated since.

[puggy]

Well you will screw the arse off it doggy !!

[DiscoPol]

Well you will screw the arse off it doggy !!

i think sometimes you guys just tease me to see what makes it in to the sig


* must resist, must resist, must resist*

[OdinEidolon]

Odin, mine didn't always 'wobble', I first noticed it early in 2010 and it has gradually deteriorated since.

Uhm, even in cold weather it wasn't noisier when just turned on?

[Doggy]

Well you will screw the arse off it doggy !!

You're a fine one to talk, after crash landing your beast recently.

i think sometimes you guys just tease me to see what makes it in to the sig

Perish the thought Disco, as if we would....

Right! back to TMOASH......

[puggy]

Well you will screw the arse off it doggy !!

i think sometimes you guys just tease me to see what makes it in to the sig


* must resist, must resist, must resist*

Not teasing you anymore since you went with doggy !!

You're a fine one to talk, after crash landing your beast recently.

Can't argue with that , think it's done the spring and abs ring in as well

[Doggy]

Well, I've got some bad news and just maybe.....

First the bad. Stopped on to complete some very amateurish turning etc. to complete TMOASH, thus incurring the wrath of Mrs Doggy.
(You're dinner is the dog), well, both of them really as we sadly lost our eldest cavalier last week), sob.

Then, after the delights of our customary Thurs evening trip to Asda, (sorry if tales of the high life are upsetting anyone), methinks I'll give it another dose of WD40 & check the slide hammer fits.....

The trouble with a grand plan like this is you need to check your facts first, which sadly, Doggy had failed to do.
Intended attaching TMOASH via 2 lengths of 8mm studding with nuts under the clamping yoke previously pictured on the replacement injectors, I somehow managed to overlook the blindingly obvious fact that there are already two 7 mm studs screwed into the head to clamp said yoke & hence injector in place.

In a fleeting moment of optimism, I decided to unscrew one of the studs - surely it must pass through the yoke? They wouldn't design something you couldn't get out with the injector in place, would they?

Now the studs are helpfully not threaded all the way to the top - the last 5 mm or so is splined, so you can easily insert / remove them, yes?

No. Cos I don't happen to have any inside-out torx sockets. Maybe a 5 mm hexagon socket? Non! All this suceeded in doing was rounding the splines off a bit. 3/16 socket? Nope, now it's properly rogered. Not having the common sense to give up & drink beer, I set about the stud on the other side of No. 4 injector, giving it a firm tap before trying to turn it and mugger be, it moved!
I unscrewed it a but further, and sure enough Peugeot in their wisdom have fashioned the studs with a 10 mm or so diameter 'bulge' in the middle to ensure even their techies cant actually tighten it all the way into the combustion chamber.

Needless to say, there is no chance this'll pass through the 8.5 mm hole in the yoke..... Ah well, in for a penny.... Unscrewed it until the 'bulge' made contact with the yoke & started to lift it, (no real surprise, the yoke can 'float' up down the casing by a mm. or two), went a tad further and the injector moved!

A bit more, yes! it's definitely sliding virtually effortlessly out of the head. Piccy below shows one of the injectors, 'extracted' by about 3 mm. by the stud to the left of the injector, the one on the right shows the 'bulge' halfway between head & yoke.



I tried all 4 - they all started to slide out with litte effort, just turning the stud, with a 1/4 drive socket extension, the kind with a screwdriver-like handle on it.

I only lifted each one a few mm. as it was too late at night to contemplate finishing the job, (nearly 11:00 pm). But I'm now cautiously optimistic they'll come out easily.

The dogmobile's done 154k and I have most of it's history - these injectors haven't seen the light of day in the last 100k / 5 years - I strongly suspect they've never been out. Bit early to count chickens, but I hope that since they've all moved a bit without much force, getting them all he way out should be straightforward. I reckon the multiple doses of WD40, combined with the temperature cycles caused by driving are the answer.

Bet the problems not the injectors now.

[puggy]

Good news there doggy , will be a very good result if you finally
manage to cure the problem .

[DiscoPol]

it is all sounding far too easy
hope it goes well Doggy, Im hoping i dont have this to look forward to in another 150k or so

[Doggy]

All done. and it wobbleth no more!

Changed No. 2 and immediatley cured the problem.

As these come in three 'grades' and mine were '2's and the replacements '3''s, I decided to swap them all.

They all came out dead easily, only No. 1 put up anything of a fight - I jacked it out by unscrewing one of the studs, (pictured below), all the way, then manage to pull & twist it out by hand.



They looked a bit grotty, (see below), but nothing obviously amiss.



No.1 & No.4 ,(pictured above), had some slight rusting of the anodised outer shell as you can see, 2 & 3 looked like new. The gunge at the tip is a mixture of WD40 & carbon deposits.

I hadn't realised just how lumpy it was becoming, I stalled it about 5 times in the last week, you could feel continual chugging when cruising and my last tankful was gobbled at a rate of 36.7 mpg. Now it's all good.

I'm going to hook it up to PP2000 & reset the injector class to match the new ones, refit the acoustic cover and the Dogmobile will hopefully be match-fit again.

Didn't turn out to be much hassle in the end, but I'm still grateful for the warnings that it could be really difficult, as this led me to soak them in WD40 for a week before trying removal. This may well have made all the difference, I'll never know, but it certainly didn't hurt.

Thanks for everyone's input as always.

[plod]

Result Doggy

I'm pleased it worked out for you, and makes the owning of a 16v HDi a bit more appealing

[jasper5]

Excellent result

I was hoping they would come out easy and all the fuss had been for nothing....happens a lot with potentially difficult jobs....it's the easy ones that cause more stress, you think they ought to be easy but prove to be completely opposite.