cleaning injectors

[alpha omega]

hi,the car is running a bit rough on idle and poor fuel economy,but fine while driving apart from a vibration from the rear right when seeting off in 1st gear.can anyone advise as to wether this should be left to a specialist to remove and clean the injectors and have the seals replaced. ? as always any advice grateful👍stephen

[Steve Q]

I guess it depends how handy you are with the spanners. As I personally would always leave it to a professional. Have you done a diagnostic check to see if any fault codes flag up 

[alpha omega]

hi steve, sorry i should have said.yes,and no fault codes i was just leaning towards injectors as i have high mileage.i have read on here people having faults with different things on their cars and not having any fault codes come up.i know its guess work without a reading.if i was to go down the rd of injectors then yes i will leave it to the professionals then as i am not that handy with spanners.regards stephen

[Steve Q]

Is it smoking on start up? 

I ask as mine was (before I blew it up) and I had a suspicion it was the injector seals that had failed. 

No fault codes and she ran fine. 

[alpha omega]

yes but black smoke and now its not reving much lol just going to put the code reader on it will be back soon

.....update.....loose connection to maf not sitting right revs back to normal.will book it in a garage and see what they think.thanks for now

[alpha omega]

update got it booked in with an audi technician this week will let you all know the outcome😂 how much😮lol

[alpha omega]

update coming

[Steve Q]

Sorry for the delayed reply. Could this be a dpf issue? 

[alpha omega]

sorry for the even later reply steve here are the results from audi(£99 health check)...😂😂😂no mention of dpf/injectors.i could not believe they had to turn the timing back a notch😮 got part video on audi cam they sent me.

 

 

 

 

[Steve Q]

Is it running any better now?

[alpha omega]

it feels like it steve i am going to start it in the morning and let it idle and see if it ticks over ok will let you all know thanks

[alpha omega]

started the car up and left it to idle and it now idles fine.no rough idling....i thought great,until i went to rev the car up and its only giving me 2,500rpm......taken the front bumper off this morning as i thought this pipe(see pic)had come lose like it did once and had power loss...checked the connector to the turbo all fine checked other pipes and connectors all ok.....plugged the snap on in....no codes.....any ideas please. stuck with car on ramps this morning.lol..21/05/23

 

[alpha omega]

update put the car back together still 2500rpm at standstill took it for an italian tune up.it gave power when needed but no higher than just over 3000rpm still powerful enough but not the 4500 i used to have at standstill.still no codes.no warning lights on dashboard.i will have to look into what steve Q has mentioned the dpf as i have symptons of low power,bit of black smoke from exhaust,diesel fuel odour in the cabin,reduced fuel economy.i thought audi may have picked up on this on thursday the 18th of may as i asked for a health check on the engine. pleased audi realised about the timing though phew..

[Steve Q]

41 minutes ago, alpha omega said:

update put the car back together still 2500rpm at standstill took it for an italian tune up.it gave power when needed but no higher than just over 3000rpm still powerful enough but not the 4500 i used to have at standstill.still no codes.no warning lights on dashboard.i will have to look into what steve Q has mentioned the dpf as i have symptons of low power,bit of black smoke from exhaust,diesel fuel odour in the cabin,reduced fuel economy.i thought audi may have picked up on this on thursday the 18th of may as i asked for a health check on the engine. pleased audi realised about the timing though phew..

Love that, not heard the Italian tune term for a long time! Yea as I say I'd consider issue with dpf or even egr. 

[alpha omega]

strange revs have come back now. knowing my luck not for long lol

[Stevey Y]

2 hours ago, alpha omega said:

strange revs have come back now. knowing my luck not for long lol

Hi Steve, the car won't rev above 2500 standing because it has a built in rev limiter to stop that sort of activity and the moronic element from smashing the granny out of the cam belt and valve gear, it ain't like the old days where some used to get a kick out of listening to valve gear bounce and compression rings chattering, the whole process works on reciprocal force I.E. weight counterforce against the driven speed of the engine, the two forces balance each other out.

Steve.

[alpha omega]

oh my word steve thank you for enlighting me and others with your knowledge we are very grateful it now puts my mind at ease.kind regards stephen.ps just waiting for a garage to get back to me to see when they can book me in for the front wishbone arms and timing doing including the water pump