One year on..... Here we go again .....

[Dragrad]

She's Back on original MAF and no S2.. Still the engine sounds better than she did before..... Ahh! Comfort

Pockets' a lot lighter though

[JohnDotCom]

Great news, glad finally sorted.
Perhaps show it off now at National Meet.

[BigRuss]

Brilliant news, glad you're back on the road again.

Russ

[Roverron]

I received these comments from Alan Darby of Lynx Diesels in response to my canvassing his opinion on the finger pointing aimed at the Synergy being to blame.

"I think your right, to get enough fuel into the chamber through a nozzle
to cause such a fault seems highly unlikely if not impossible.
I have seen engines running with nozzles slit, misfiring and smoking a
lot, but none the less running. The tip off a nozzle causing engine
failure (not running), but runs OK when new injector is fitted.

I don't think the fitting of a synergy unit in it,s self can cause this
failure either, but running any engine with an improve performance will
increase the possibility of such a problem if there is an area of
weakness in any mechanical part, other wise non modified engines would
never fail.

I'm not sure why nozzles split or tips blow off, other than normal
fatigue or blocked holes. Although i have seen tips burnt off when run
on petrol, but this did not result in broken crankshaft or bent con
rods.

Water in through the air intake does a good job of this type of
fault.(was it a wet day when this happened)

I won't tolerate any further insinuations that the Synergy is implicated and will resort to a hih court writ for "malicious falsehood" if these persist.

Ron

[GreyGhost]

That kind of fits nicely with my gut feeling in post 176.

http://www.the75andztclub.co.uk/foru...&postcount=176

[Roverron]

Originally Posted by Grey Ghost

That kind of fits nicely with my gut feeling in post 176.

http://www.the75andztclub.co.uk/foru...&postcount=176

Common rail tuning boxes have been around for 10years so if it was possible to overfuel to such an extent, other engines, some probably not as strong as the M47r would have suffered a similar fate.
But I trust I have demonstrated that its impossible for it to happen with or without a tuning box fitted.
It is not as if the Synergy is turning up the pressure by an enormous amount in any case. That can't happen because the ecu will simply stop the engine when the pressure cannot reach that which the tuning box is trying to demand. (about 20% more than standard)

Ron

PS if the engine seized whilst the car was in motion the torque converter and possibly the gearbox would likely be damaged.

[Dragrad]

Originally Posted by Roverron

I received these comments from Alan Darby of Lynx Diesels in response to my canvassing his opinion on the finger pointing aimed at the Synergy being to blame.

"I think your right, to get enough fuel into the chamber through a nozzle
to cause such a fault seems highly unlikely if not impossible.
I have seen engines running with nozzles slit, misfiring and smoking a
lot, but none the less running. The tip off a nozzle causing engine
failure (not running), but runs OK when new injector is fitted.

I don't think the fitting of a synergy unit in it,s self can cause this
failure either, but running any engine with an improve performance will
increase the possibility of such a problem if there is an area of
weakness in any mechanical part, other wise non modified engines would
never fail.

I'm not sure why nozzles split or tips blow off, other than normal
fatigue or blocked holes. Although i have seen tips burnt off when run
on petrol, but this did not result in broken crankshaft or bent con
rods.

Water in through the air intake does a good job of this type of
fault.(was it a wet day when this happened)

I won't tolerate any further insinuations that the Synergy is implicated and will resort to a hih court writ for "malicious falsehood" if these persist.

Ron

Firstly Ron, I don't think I implied any of the sort, I was however throwing ideas around and asking the questions. I think I did reply in that vein at the time.

Nor did I believe that the S2 could cause such damage. However when one is at a total loss as to why such a catastrophic thing can occur, all sorts of questions, and avenues of exploration spring to mind.

So to rest your mind the S2 (& PB MAF) will be fitted back as soon as I have driven a few miles to ascertain that the garage has done a proper job.

I would also like to thank you, (and others) for the ideas that have been put forward in my attempt to understand the situation that arose.

As for the water intake - the air intake mod 2 has been done and it was a dry day (for a change)

Originally Posted by Roverron

Common rail tuning boxes have been around for 10years so if it was possible to overfuel to such an extent, other engines, some probably not as strong as the M47r would have suffered a similar fate.
But I trust I have demonstrated that its impossible for it to happen with or without a tuning box fitted.
It is not as if the Synergy is turning up the pressure by an enormous amount in any case. That can't happen because the ecu will simply stop the engine when the pressure cannot reach that which the tuning box is trying to demand. (about 20% more than standard)

Ron

PS if the engine seized whilst the car was in motion the torque converter and possibly the gearbox would likely be damaged.

Engine did not seize, but now you got me worried about the torque convertor and my newly re-furbished gearbox.

To re-iterate the S2 IS going back on, after all it makes the car safer to drive

And the reason for the failure?

I had a chat with the mech. who worked on her, and he said it could have been a number of things...

Hydraulic lock? Well there was diesel in the piston head but that would be expected.

Metal fatigue? The break was clean on the crankshaft, so probably not as one would expect some sort of cracking first, but he did not rule out that the metal could have been weakened...... How I asked, He said.. if the car had been run for a long period with the oil level low, or the wrong oil put in......

Which goes back to my original theory that the car had not been looked after properly at the garage where the only previous owner had all her servicing done. Guess I was left to pick up the pieces

[JohnDotCom]

You mean your driving with it Off?

Not sure if you refitted it, but the Pierburg MAF wont work properly if you are (unless just tuning stage switched off).

[Dragrad]

Originally Posted by JohnDotCom

You mean your driving with it Off?

Not sure if you refitted it, but the Pierburg MAF wont work properly if you are (unless just tuning stage switched off).

I know that John That's why I cleaned the original Bosch MAF and kept it safe, just for this sort of occasion. I'm getting "garage happy syndrome" - NOT!!

As I stated I will run her for a week or so, just to make sure that she's working properly. Then its, PB MAF in and S2 back in place...... then, and only then, will I be Happy (or happier?)

Garage was not too happy about the EGR by-pass, but did agree with the air intake mod 2

[Zeb]

Originally Posted by Dragrad

She's Back on original MAF and no S2.. Still the engine sounds better than she did before..... Ahh! Comfort

Pockets' a lot lighter though

I think herein lies the clue.....engine was failing slowly...probably due to oil starvation many moons ago...