Wobble when idling (faulty injectors) Now Sorted!

[Doggy]

That's it. Mine were about 80 ohms, IIRC

[OdinEidolon]

Injector extracted today with injector exctractor. A thing that pulls something like 20 tonnes!

Now it's all good.

EDIT: again many many many thanks to Eric.

[Doggy]

Great news Adriano.

[OdinEidolon]

Great news Adriano.

Yep! Now the car's almost ready for remap and defap!

[Doggy]

almost

[gumby6371]

Just thought I'd mention this for anyone thinking of an injector refurb, at work we use a firm called Carwood motor factors in Coventry for various things. I asked them how much they'd charge to refurb my injectors to which they replied, testing cost nothing, refurb £30 plus the VAT. Now that was slightly discounted as we push a lot of business their way but I don't think it would be a great deal more at full price. Only thing thats stopped me is sourcing a full set of replacements so I don't need to have the car off the road.

[OdinEidolon]

almost

Full service due in the next month including various bits such as oil gasket ('cause it was moved today), injector well cleaning, gearbox oil (it's a little grippy sometimes, reverse is a pain). I want the car to be perfect before remapping it.

Just thought I'd mention this for anyone thinking of an injector refurb, at work we use a firm called Carwood motor factors in Coventry for various things. I asked them how much they'd charge to refurb my injectors to which they replied, testing cost nothing, refurb £30 plus the VAT. Now that was slightly discounted as we push a lot of business their way but I don't think it would be a great deal more at full price. Only thing thats stopped me is sourcing a full set of replacements so I don't need to have the car off the road.

36£ is a GREAT price. I can assure you it is. Here the ask 80-100€ foreach injector at least. Pity i'm not in the UK.

[Doggy]

There's a big difference between XUD & HDi injectors

[OdinEidolon]

There's a big difference between XUD & HDi injectors

whops, didn't see he has a XUD. Pardon.

[OdinEidolon]

By the way how much is it there for a before-and-after rolling session? Just curious.
I'd like to see the power increase led by the remap when I do it. There's a mechanic here that does rally and has the equipement, I'll need to ask him, but I think it was ~60€. Is it worth it?

[Doggy]

I suppose we would all like to know what the numbers are, but I made do with measuring the in gear acceleration times before and after.

Did a run in 3rd gear from 20 mph - maximum pressing the split timing button on the stopwatch at 30,40,50 etc. Then the same in 4th gear, then 5th gear. Repeated the series of tests, on the same day, on the same roads etc. after the remap.

I know it's not a particularly accurate process, but does at least give you a good idea of the relative difference.

[OdinEidolon]

I suppose we would all like to know what the numbers are, but I made do with measuring the in gear acceleration times before and after.

Did a run in 3rd gear from 20 mph - maximum pressing the split timing button on the stopwatch at 30,40,50 etc. Then the same in 4th gear, then 5th gear. Repeated the series of tests, on the same day, on the same roads etc. after the remap.

I know it's not a particularly accurate process, but does at least give you a good idea of the relative difference.

out of curiosity, what are the results?
I have this mechanic supposed to be good near home, we'll see what are his prices.

[Doggy]

I suppose we would all like to know what the numbers are, but I made do with measuring the in gear acceleration times before and after.

Did a run in 3rd gear from 20 mph - maximum pressing the split timing button on the stopwatch at 30,40,50 etc. Then the same in 4th gear, then 5th gear. Repeated the series of tests, on the same day, on the same roads etc. after the remap.

I know it's not a particularly accurate process, but does at least give you a good idea of the relative difference.

out of curiosity, what are the results?
I have this mechanic supposed to be good near home, we'll see what are his prices.

how about 40-60 in 3rd 5.0 sec., 70-90 in 4th 10.1 sec., 80-100 in 5th 13.2? (that's standard).

Now we have 40-60 in 3rd 3.5 sec., 70-90 in 4th 7.0 sec., 80-100 in 5th 9.7

I've got a spreadsheet somewhere, but can't locate it at the mo......

[OdinEidolon]

I suppose we would all like to know what the numbers are, but I made do with measuring the in gear acceleration times before and after.

Did a run in 3rd gear from 20 mph - maximum pressing the split timing button on the stopwatch at 30,40,50 etc. Then the same in 4th gear, then 5th gear. Repeated the series of tests, on the same day, on the same roads etc. after the remap.

I know it's not a particularly accurate process, but does at least give you a good idea of the relative difference.

out of curiosity, what are the results?
I have this mechanic supposed to be good near home, we'll see what are his prices.

how about 40-60 in 3rd 5.0 sec., 70-90 in 4th 10.1 sec., 80-100 in 5th 13.2? (that's standard).

Now we have 40-60 in 3rd 3.5 sec., 70-90 in 4th 7.0 sec., 80-100 in 5th 9.7

I've got a spreadsheet somewhere, but can't locate it at the mo......

No problem.
Great results there. What about the lower end of the rev counter? For example 20-40 in 3rd?
I know there shouldn't be much of a gain but just to see if there is any. Turbo lag got better?

[jonsowman]

More digging up old threads, hooray.

Have had this car for about 3 months now, and I noticed a while ago that there was a definite wobble at idle and a hiss from the engine bay once per cycle. Fuel consumption was around 41-42mpg over about 3k gentle motorway miles, which was a bit lower than I was expecting from this (currently stock mapped) engine.

Some diagnosis from KrisB found the number 1 injector was not sealing properly against the head, causing combustion gases to blow past the injector - there was visible evidence of this around the injector. Eventually this would cause serious damage to the head. So after hunting down an injector puller, out it came, and was cleaned and reseated on a new washer.

All seems much better now - wobble has gone and over a long motorway trip yesterday it averaged 45mpg.

Lesson for anyone replacing injectors: replace the washers too