RESOLVED- ultrasonic injection cleaning/rich running

wotugonado · February 19, 2016, 18:51

They're back from the injectors cleaners s:bounce: :bounce: s:bounce: missed being able to drive the car so hopefully back on the road tomorrow s8)

s8)

Back to the drawing board on emissions though as i dont think that they were the problem as they all passed the leak test s:roll: :roll: s:roll:

Heres the printout if anyones interested, flowing as they should be now i was 30cc down, dont know if this will make much difference but looking forward to finding out s:twisted: :twisted: s:twisted:

Anonymous · February 19, 2016, 18:58

Depending on the o2 sensors and how they are set up it could of made the system richer to counter the low cc on two cylinders making the other two rich.

Carolyn · February 19, 2016, 19:06

You say you are running rich. Are your plugs sooty? Are they oily and black, or do they look OK? (brown to slightly white-ish) High hydrocarbons could be oil getting past the turbo seals?

wotugonado · February 19, 2016, 19:14

Hi Rich, is that a possibility ? Also the spray pattern wasnt great on the one, what effect would that have ?

wotugonado · February 19, 2016, 19:20

Quote from: "Carolyn"You say you are running rich. Are your plugs sooty? Are they oily and black, or do they look OK? (brown to slightly white-ish) High hydrocarbons could be oil getting past the turbo seals?

Theres a pic of them i think on another thread i started(been an on going problem) general feedback was that they looked healthy. Oil past the turbo seal s:? :? s:? would i get any other obvious signs as its something i havent considered.......

Carolyn · February 19, 2016, 19:40

If you undo the hose between the turbo and the intercooler, wipe your finger round the inside and see if it's oily. A bit greasy is Ok but downright oily isn't. If you're running rich it should show up in the plugs. These are lean running engines so the plugs tend to be whiteish and show high hydrocarbons in emissions. In the old days, we looked for sandy brown. Sooty usually indicates rich.
This IS mysterious indeed. Poor spray pattern will means poor/incompletr combustion -more unburnt fuel leaving the cylinder... also more hydrocarbons. An exhaust leak upstrem of the O2 sensor can also cause the problem.... If all checks out good, then it points to the cat. This is a really tricky one!!

wotugonado · February 19, 2016, 20:28

whoa carolyn information overload..................... twice s:D

s:D You cant delete the post but you can edit it

I will check the intercooler pipe tomorrow, so thanks for that.
Exhaust leak was where the fun began last mot time, think i sorted it but it could well have reared its head again, and the sports cat was replaced with my oem cat to get it through the last mot.
Good info on the spray pattern, Thanks

1979scotte · February 20, 2016, 10:46

My turbo went last year.
Do you have a boost gauge?
Said it before mine passes no problem with a sports cat.

wotugonado · February 20, 2016, 11:54

Yep ive got boost, oil pressure and oil temp gauges & they're all reading ok.
Have to say the injection cleaning has made a noticeable difference to power delivery, well worth the money for me, idle is better too.
Still hitting -13 on bank 2 long term fuel trims, it must be a leak very annoying.

Anonymous · February 20, 2016, 12:25

Have you reset the ecu since the injectors'

wotugonado · February 20, 2016, 15:49

Yeah i disconnected the battery while i refitted the injectors.
I just replaced the sparkplugs as well, as i had the cover off, then took it for an hour long drive/italian tune up with the
odb plugged in and the long term trims are reading better s:)

s:)
What i did notice was that the fuel trims are great when driving and dip when i get to lower revs or a standstill, so question does the
Tte ecu purposely richen the mixture at lower revs ?
Im gonna be well p1ss3d off if ive been trying to sort out a non existant problem s:lol: :lol: s:lol:

1979scotte · February 20, 2016, 18:24

I dont think any other TTE Turbo owner has had any issues like yours.
Hopefully it will pass MOT.

wotugonado · February 20, 2016, 18:41

Quote from: "1979scotte"I dont think any other TTE Turbo owner has had any issues like yours.
Hopefully it will pass MOT.

yes ive had a few additional problems that needed sorting, but if its meant to run slightly rich then other tte owners wouldnt think it odd, would be interested if another tte owner
could hook up a reader and see if its meant to run slightly rich as normal. Would love to get to the bottom of it and get the sports cat back on......

1979scotte · February 20, 2016, 18:51

Running rich is better than lean right?
Turbo cars do run a bit rich to avoid det or am i on the wrong page?

wotugonado · February 20, 2016, 19:02

Im no expert as you can tell s:)

s:) but Im thinking the same as you, which is why im asking the question.

1979scotte · February 20, 2016, 19:58

Maybe i am not as stupid as i look.

wotugonado · February 20, 2016, 20:05

Easy tiger,we need confirmation off someone whose has actual knowledge, both of us could be way more stoopid than we look

Anonymous · February 20, 2016, 21:46

Yes they will be richer at wot. Tick over tho it should be stock levels as there is no boost.

wotugonado · February 21, 2016, 12:57

ahh bugger. well i guess ill just have to keep an eye on it.

wotugonado · March 10, 2016, 17:30

Well finally sorted it, it was a duff maf s:evil: :evil: s:evil:
It was one of the first components i checked, the readings seemed to be measuring the right amount of airflow.......... except obviously it wasnt s:? :? s:?
It never threw a code either.

ltft readings on duff maf

ltft readings on new maf

Should help the emissions for the mot s:)

s:)

StuC · March 10, 2016, 17:50

Result fella.
Good data to have too. Might be worth actually posting the numbers to make searching easier (in light of your feedback suggestion).

Carolyn · March 10, 2016, 18:08

Thanks for posting that. Everyone's saying a duff MAF will throw a code. So here I am with an impossibly rich running bog-standard pre-facelift. No code.

Swapped the MAF with my good running MR S. Problem promptly transferred to the MR S. So a duff MAF may, or may not, throw a code. New MAF on the way.

Most helpful.

StuC · March 10, 2016, 18:48

Quote from: "Carolyn"Thanks for posting that. Everyone's saying a duff MAF will throw a code. So here I am with an impossibly rich running bog-standard pre-facelift. No code.

Swapped the MAF with my good running MR S. Problem promptly transferred to the MR S. So a duff MAF may, or may not, throw a code. New MAF on the way.

Most helpful.

Just for some correlation with Dan's results Carolyn, can you post your LTFT's too please?

Carolyn · March 10, 2016, 19:07

Unfortunately my MRS is on JOBD. I don't have an EOBD reader....

I'll borrow one from next door over the weekend,

wotugonado · March 10, 2016, 21:12

Stu c - what numbers do you want posted mate ?

Carolyn- yeah its led me a merry dance for a while now, but the conclusion is that they can read the correct air flow, not throw a code but still be faulty s:? :? s:?
Glad that its helped someone else out too s:)

s:)