turbocharged798
Veteran Member
Good to know. Thanks.
funny is that when we had here even -16C my average fuel consumption was about 6L/100km +/- 0,5 depended how hard i were driving, but now i havent got less then 7,2l/100km, although easy driving and the same road from home to work and back. summer i got little less than 5L/100km.XaV_T said:They're ok! Don't worry
During winter, fuel consumption is increasing.
Same for my FSI engine!
OK, so when reved readings are meaningless. But still could be cloged injector nozzles or something?XaV_T said:It's at idle.
i were thinking the same, also the uneven engine working for 10 sec and unburned fuel smell and smoke from exhaust when cold startingNewzboys said:I'm not a guru, but logic leads me to believe that your #4 has a clogged injector, I had a car here that had a very similar reading on the #1, and we knew for a fact that it was clogged.
hmm, interesting, what could be the cause, i noticed it just after oil change, oil is about 1mm over max mark(that could not also make any difference).XaV_T said:Injection nozzles won't decreas your MPG, at least not a this point.
My father's AHU had a nozzle @ 1.88 and I did a 600 mile tank with it. After changing the nozzles, it didn't change the fuel consumption (.205)
osoonikum said:i were thinking the same, also the uneven engine working for 10 sec and unburned fuel smell and smoke from exhaust when cold starting
in summer i got normally 47-50 MPG(US), in winter 38-42 MPG but now has dropped dramatically basically over night to 32 MPG. could be there sticky VNT actuator or vanes? i have had some times limp mode and got faulty code 17958 - Charge Pressure: Control Deviation
P1550 - 35-00 - -
But havent got it for some time and after deleting the code havent appeared again. i tested the vnt movement via vag com and came to conclusion, that VNT actuator or vanes are sticking, but as soon as i get some $$ i will get it fixed. In my mind could be probably injection nozzles decreasing my MPG
Newzboys said:
I checked my Group 13 today, here are the results:
cyl 1: -.45
cyl 2: -.54
cyl 3: -.94
cyl 4: XX
Do my injectors look out of wack?
I have about 213,000 miles on the car and I have know idea if the injectors have ever been replaced...
Not in my book...Everything's OK!
Not good, but not not an unusual failure pattern, right Frank?Not in my book...
If you figure that the #4 injector(actually, I think it's really #3, the default), is attempting to add fuel. The other injectors are all decreasing fueling to compensate.
The #3 is usually the one that goes out of whack first, so what is happening is normal.
If we have the following readings:
#1 -0.7
#2 0.0
#3 +1.3
#4 -0.4
does it mean that injector #3 has to be checked?
How does the car run? Don't fix what isn't broke. The "injector balance" isn't just the condition of the injectors, it could also be the condition of the cylinder itself, valves, IP, etc to get that reading.Did measurments on my warm alh group 13 today. Drived it on high way then on local came home and tested it.
Cyl #1 -0.19 mg/str
Cyl #2 -0.52 mg/str
Cyl #3 0.71 mg/str
Cyl #4 0.02 mg/str
So between the cyl 2 and 3 the difference is 1.23 and i bet it tells me i should have a look at my noozles in some short time. Take them out clean them is that right ? Its not due to the chip tuning i made coz i remember car had a huge iq difference since i got it.
Can't see any problem on those values.Did measurments on my warm alh group 13 today. Drived it on high way then on local came home and tested it.
Cyl #1 -0.19 mg/str
Cyl #2 -0.52 mg/str
Cyl #3 0.71 mg/str
Cyl #4 0.02 mg/str
So between the cyl 2 and 3 the difference is 1.23 and i bet it tells me i should have a look at my noozles in some short time. Take them out clean them is that right ? Its not due to the chip tuning i made coz i remember car had a huge iq difference since i got it.