Misfire requires number 2 injector and inlet manifold replacement - just £4k to fix…
Ohhh dear… :o
Misfire requires number 2 injector and inlet manifold replacement - just £4k to fix…
Ohhh dear… :o
While you have the intake off I would strongly suggest getting the other injectors tested as usually its not just one bad injector. 4k is a big bill for just that.
When you said inlet manifold are you talking about the intake manifold. Because that would make sense those are like 2k alone.
Technician says its the flap that needs replacing, thus whole manifold as its built in.
I had zero issues only since it been very cold. The injector has not ‘gone’ yet apparently, just on way out.
May just be the intake manifold and not the injector, but I guess we have to wait for the updated manifold to come from Audi corporate anyway, so there’s no way to test for sure (yet).
Thanks. They did a pressure test when it was cold first thing in the morning and the en gin warning light had a very brief error. So after changing plugs around etc and it all pointed to No. 2 injector being intermittent and a sticky manifold flap. To replace the Injector manifold must be removed - so why not do the manifold a too.
I had a private chat with the Tech and he said in a nutshell that if I want the car to be 100% perfect then this is the work that needs to be done. However the car does seem fine in ‘normal’ weather no issues or loss of power at all, although he pointed out that on a v10 if one cylinder wasn’t working, you might not know anyway :), it’s only on start up idling from cold that when you put your ear to the manifold you can hear ticking for a while.
From a practical perspective I have to consider if $5000 is worth it now, to spend on a 7 year old car that has no other issues. :-*
When was your last carbon clean and when was the list time you had your fuel filter changed.
Typically you see these cars cold start terrible due to the SAI or second Air Injection that turns on in the cooler weather to help speed up the cat warm up function. If carbon is bad then you can expect to see worse cold starts and if left unchecked carbon can destroy injectors over time. If you read most everyone and there journeys with these V10 cars injectors are one of the most frequently replaced things on older cars if they have never replaced them before.
You might be able to get away with an injector cleaning and I would strongly suggest getting a cleaning espically if the intake is off.
Everybody’s changeover flap is broken in their IM. Has anyone tried to offer just that as a replacement part? It sucks that you have to replace the entire IM because of a broken plastic part.
yeah, there’s no solution other than waiting for Audi corporate to complete the redesigned intake manifold. I prepaid for a new one a week or two ago. in the meantime, it’s not so bad, but yeah, i think that’s just the cost with these cars. I’m like $10-12k in so far I think…
I would have to agree with this statement. If you are not the original owner of the vehicle, you really have no idea what the previous owner(s) were running through the tank.
Below is a picture of the larger remnants of the injector filters that were removed from nine of my injectors. Only one them is intact. The technician asked if I used a lot of fuel injector cleaners. I have only ever ran 1 can of G17 through the tank. Who knows what was put in during the first 8 years of the vehicle’s life?
The picture below only shows the larger pieces. There were a lot of tiny pieces down inside the injector itself. They went through two rounds of overnight ultrasonic cleaning and testing before they were happy with the results.
http://audirevolution.net/addons/albums/images/464167480.jpg
Great posts. Can you get us the before and after on the injector cleaning. I have been thinking about starting a thread on this issue
[quote=“justincredible,post:10,topic:9132”]
Here is the injector test report. I should preface it by saying that the “before” numbers are not the actual numbers for the condition in which the injectors were in when they were removed from the engine. To avoid contaminating their system, the technician removed the large filter fragments and back flushed the injectors prior to the initial testing.
http://audirevolution.net/addons/albums/images/518899774.jpg
My misfire counts are all zero at idle now. The engine idles much smoother and starts quicker in the morning.
Having driven the car for a over week with only one engine light flicker its clear that (in my ‘older’ car anyway) if you mash the accelerator when its cold they just don’t seem to like it. There seems to be an obvious pattern now in cold weather - it takes nearly 10 min for the temp gage to move on mine to where to should be. I’m no expert but I would say after 15/20 mins of steady driving she ready for a good mashing. Mash it on start up and I get the engine warning light flicked on.
I’m not saying this issue will cure itself or not get worse, but seems entirely fine if managed correctly.
Having driven the car for a over week with only one engine light flicker its clear that (in my ‘older’ car anyway) if you mash the accelerator when its cold they just don’t seem to like it.
You could say that for any car, if you think about it over 10 litres of oil and coolant to warm up, im sure there is some eucu restrictions to safeguard your engine health. Mine does be ready for mashing after about 8-9 mins, running a 5w40 weight oil, in current outside temps of about 1-2c. These cars should have came with an oil temp gauge
Yeah I usually wait till the temp is up before any real throttling… so about 10-12 minutes in this weather…
[quote=“eng92,post:11,topic:9132”]
Here is the injector test report. I should preface it by saying that the “before” numbers are not the actual numbers for the condition in which the injectors were in when they were removed from the engine. To avoid contaminating their system, the technician removed the large filter fragments and back flushed the injectors prior to the initial testing.
http://audirevolution.net/addons/albums/images/518899774.jpg
My misfire counts are all zero at idle now. The engine idles much smoother and starts quicker in the morning.
Wow they back flused the system and still they were down almost 10% on some of them