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[Kneepad]

Nobody Loves Me! 

Of course we love you. we are all working on the problem,
sometimes it just takes a little longer.

Your misfire started 2 weeks after changing the dispack,
which was also 1 week after changing the exhaust manifold gasket. Engine continues to run when strangling the ICV.


Possibly dodgy new dispack fitted.
Possibly Lambda sensor, due to gasket sealant poisoning.
Possibly vacuum leak, but 2 cans carb cleaner should have found that.

My money is on the dispack.   

[Marks DTM Calib]

Idle air looks a little low, I normaly expect around 12 kg/h.

So I suspect an air leak.

[Broomies Mate]

Idle air looks a little low, I normaly expect around 12 kg/h.

So I suspect an air leak.

Thanks 

Where are the places I should be looking?  I have used a couple of tins of carb-cleaner under the bonnet and cant get the engine to suck it in. 

All hoses and little pipes are connected, all T-Pieces are in-tact, no splits, no abrasions.

[Marks DTM Calib]

I start by disconnecting boits and blanking them off e.g. brake servo pipe, breathers etc.

Thta cna rule a few culprits out.

You then into inlet and egr areas.

Has it always done this or was it following some work?

Is the brake servo pipe ok, no signs of chaffing near where its rubbed against the aircon pipe?

[Broomies Mate]

I start by disconnecting boits and blanking them off e.g. brake servo pipe, breathers etc.

Thta cna rule a few culprits out.

You then into inlet and egr areas.

Has it always done this or was it following some work?

Is the brake servo pipe ok, no signs of chaffing near where its rubbed against the aircon pipe?

This has occured since (but not immediately after);

DISPack / Leads / Plugs

Thorough Clean of Plenum, Breathers, Throttle Bodies and ICV.

I happen to know the EGR is leaking very slightly, but that was detected when I bought the car, many months before this problem began..... and the leak isn't any worse.  Whats the best plan for blanking it off?  Does it need to be blanked off Plenum and Manifold side, or just one side?

Servo vacuum pipe looks new to be honest.  :-/

[Marks DTM Calib]

Do check it.

When doing the breathers did you use new seals on the breather bridge?

Did you disconnect the EGR at the plenum or the flexi pipe and bracket?

[Broomies Mate]

Do check it.

When doing the breathers did you use new seals on the breather bridge?

Did you disconnect the EGR at the plenum or the flexi pipe and bracket?

Yup, new seals.

EGR was disconnected by the three torx bits on the plenum.  Soapy water shows this joint to be well sealed.  The leak on the EGR is where the brass part sits on the 'rusty' part. 

[Marks DTM Calib]

Do check it.

When doing the breathers did you use new seals on the breather bridge?

Did you disconnect the EGR at the plenum or the flexi pipe and bracket?

Yup, new seals.

EGR was disconnected by the three torx bits on the plenum.  Soapy water shows this joint to be well sealed.  The leak on the EGR is where the brass part sits on the 'rusty' part. 

As a imple check, blank the breathers off (at the rear of the breather bridge) and the brake servo feed (at the plenum joint).

[Broomies Mate]

Do check it.

When doing the breathers did you use new seals on the breather bridge?

Did you disconnect the EGR at the plenum or the flexi pipe and bracket?

Yup, new seals.

EGR was disconnected by the three torx bits on the plenum.  Soapy water shows this joint to be well sealed.  The leak on the EGR is where the brass part sits on the 'rusty' part. 

As a imple check, blank the breathers off (at the rear of the breather bridge) and the brake servo feed (at the plenum joint).

Thank You Mark.  You dont realise how grateful I am for your continuing help on this irritating problem.  I sincerely appreciate it (that goes to others too) 

This I shall do tomorrow and arrive with suitable feedback. 

[2woody]

I a in Bristol on Thursday, but need to be home on Thursday night.

If you're about in the middle of the day, I can have a quick look for you.

[Broomies Mate]

I a in Bristol on Thursday, but need to be home on Thursday night.

If you're about in the middle of the day, I can have a quick look for you.

I am so appreciative of the offer Woody, but I cant guarantee the car will be with me Thursday daytime.  It's in the paint-shop having a few alterations and touch-ups done and I've been promised it back at end-of-play Thursday.  The Guy doing the work is a good mate, so I could 'probably' have it back, but that would then involve sorting time off work etc.  Looks like just an unfortunate turn of circumstances.

Once again though, your kind offer is very much appreciated. 

[2woody]

next week might be an option, too

[Broomies Mate]

next week might be an option, too

Any help would be awesome.  I personally believe I have tried every avenue, from both directions, but sometimes a fresh pair of eyes is all that is required to make a speedy diagnoses!