Faulty Injectors - synergy 2 - Barnsley - Page 5

BigRuss · 5th February 2010, 01:41

Quote:

Originally Posted by . hammer

Before "biting the bullet" I'd be inclined to go with Big Russ's suggestion.... give it a mega-dose of injector cleaner! A tip I gleaned from a friend many years ago (who was an AR service agent)...... "before you go spending money on parts or diagnostics, give it an overdose of injector cleaner!" This has worked for me on two previous occasions. At least twice the recommended dose..... not a guarantee, but a very cheap first option! I wish you good luck!

Btw.... if you're wondering what "overdose" means, I'd say a whole bottle of RedEx to half a tank of diesel!

It's certainly worth another a go for the sake of £4.99 the previous dose already halved the injector inbalance who knows it may just clear it completely.

If it did clear the injector inbalance then if it still smoked it must be either a further intake leak/blockage of some discription or the turbo.

The only other thing I can think of as possible cause is that the turbo wastegate could be stuck open partially, although the car doesn't feel down on power.

One thing is certain it won't pass it's next MOT emissions test as it is at present.

Russ

DazBat · 5th February 2010, 12:31

Been in contact with Alan from Lynx desiels, his comments are below:

Looking at the figures, i don't think the injectors are your problem.
Check turbo pressure and correct operation of air mass meter.
This smacks of air starvation, check also the exhaust for restriction.
Let me know how you get on.

This too points to a possible turbo / air issue

1gp · 5th February 2010, 18:02

just thinking out loud , has the diesel pump been looked at , could be over fueling ? has it ever been turned up ? or would the t4 check this.? if you have any problems with intercooler pipes ,or turbo , its normally always white or blue smoke is it not. ? like i said just thinking of the top of my head..

eddybrown · 5th February 2010, 18:04

Quote:

Originally Posted by 1gp

just thinking out loud , has the diesel pump been looked at , could be over fueling ? has it ever been turned up ? or would the t4 check this.? if you have any problems with intercooler pipes ,or turbo , its normally always white or blue smoke is it not. ? like i said just thinking of the top of my head..

Hmm I wonder if it's been remapped at some point maybe?

1gp · 5th February 2010, 18:11

at the end of the day it a fuel related problem , to much, i would also plug another ecu in and try it , seeing his got washed....

DazBat · 5th February 2010, 18:18

The car has only had two owners, me being the second, the first was a business so hopefully it should not have been messed with too much. For reference car mileage is 59K on a 55 plate

I have been in contact with Russ and we have an action plan !

To discount any MAF issues
- disconnect the MAF and check smoking
- replace my MAF with Russ's and check smoking

Exhaust blockage
- visual check the condition of the exhaust for damage / blockage

Air intake issues
- Look for obvious leaks, split hoses, damaged intercooler (clean out whilst impecting)

Turbo
Check turbo wastegate
If all else fails look at a replacement turbo

To be done in order and leaving the most expensive option while last !
Thanks for all your suggestions

JohnDotCom · 5th February 2010, 18:29

Has the CAT collapsed or gone?
No sensors on this on diesel for T4.

1gp · 5th February 2010, 18:29

Time to start thinking outside the box. bare in mind your ecu had a shower ..... really hope you get to the bottom of this.... also dont dismiss the diesel pump over fueling... good luck

BigRuss · 5th February 2010, 19:25

Quote:

Originally Posted by JohnDotCom

Has the CAT collapsed or gone?
No sensors on this on diesel for T4.

Thanks JDC, going to be having a careful look for a collapsed cat when we examine the exhaust system.

Quote:

Originally Posted by 1gp

i would also plug another ecu in and try it , seeing his got washed....

Plugging in another ecu won't work as they need to be matched to the car, as far as I am aware the ECU has not been wet.

Russ

DazBat · 5th February 2010, 19:43

Russ,

Prior to the MAF replacement the ECU did get a soaking, the 'local Garage' dried it out and then have sealed the ecu in
The first time I came down to see you, we were going to have a look at exactly what they had done but never got around to it.

5th February 2010, 19:43	#50
DazBat Newbie 2006 MG ZT 2.0D Join Date: Nov 2009 Location: Barnsley Posts: 25 Thanks: 0 Thanked 0 Times in 0 Posts	Russ, Prior to the MAF replacement the ECU did get a soaking, the 'local Garage' dried it out and then have sealed the ecu in The first time I came down to see you, we were going to have a look at exactly what they had done but never got around to it. Last edited by DazBat; 5th February 2010 at 19:56..

5th February 2010, 12:31	#42
DazBat Newbie 2006 MG ZT 2.0D Join Date: Nov 2009 Location: Barnsley Posts: 25 Thanks: 0 Thanked 0 Times in 0 Posts	Been in contact with Alan from Lynx desiels, his comments are below: Looking at the figures, i don't think the injectors are your problem. Check turbo pressure and correct operation of air mass meter. This smacks of air starvation, check also the exhaust for restriction. Let me know how you get on. This too points to a possible turbo / air issue

5th February 2010, 18:02	#43
1gp I really should get out more....... mgzt, 135 cdti , manual , in solar red.also own a mgtf. Join Date: Jan 2010 Location: notts. Posts: 2,105 Thanks: 28 Thanked 40 Times in 39 Posts	just thinking out loud , has the diesel pump been looked at , could be over fueling ? has it ever been turned up ? or would the t4 check this.? if you have any problems with intercooler pipes ,or turbo , its normally always white or blue smoke is it not. ? like i said just thinking of the top of my head..

5th February 2010, 18:11	#45
1gp I really should get out more....... mgzt, 135 cdti , manual , in solar red.also own a mgtf. Join Date: Jan 2010 Location: notts. Posts: 2,105 Thanks: 28 Thanked 40 Times in 39 Posts	at the end of the day it a fuel related problem , to much, i would also plug another ecu in and try it , seeing his got washed....

5th February 2010, 18:18	#46
DazBat Newbie 2006 MG ZT 2.0D Join Date: Nov 2009 Location: Barnsley Posts: 25 Thanks: 0 Thanked 0 Times in 0 Posts	The car has only had two owners, me being the second, the first was a business so hopefully it should not have been messed with too much. For reference car mileage is 59K on a 55 plate I have been in contact with Russ and we have an action plan ! To discount any MAF issues - disconnect the MAF and check smoking - replace my MAF with Russ's and check smoking Exhaust blockage - visual check the condition of the exhaust for damage / blockage Air intake issues - Look for obvious leaks, split hoses, damaged intercooler (clean out whilst impecting) Turbo Check turbo wastegate If all else fails look at a replacement turbo To be done in order and leaving the most expensive option while last ! Thanks for all your suggestions

5th February 2010, 18:29	#47
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	Has the CAT collapsed or gone? No sensors on this on diesel for T4.