Chat Purchased a 1.6 FSI

First, check the fuel rail pressure with the ignition on, but engine not running, that gives you a reading for the electric pump, in the tank. Then start the engine, to check the high pressure, engine driven, pump, (HPFP - High Pressure Fuel Pump).
Mac.
 
So I charged the battery at home and reconnected it.
Today I connected-up VCDS Lite checked for errors first and there were none.
I took some captures of Group 140:

Ignition on

Ignition On.PNG


140 engine running.PNG


Second capture, engine running, but not being driven. Periodically being revved at standstill.
"load" in column "3" was between 14.9 and 23.9
"bar" % in column "5" was between 62.1% and 101.1%
All items logged logs had "System OK"
I'm assuming it wouldn't say "System OK" if there was an issue.?
 
AndyBa said:
So I charged the battery at home and reconnected it.
Today I connected-up VCDS Lite checked for errors first and there were none.
I took some captures of Group 140:

Ignition on

View attachment 114997

View attachment 114998

Second capture, engine running, but not being driven. Periodically being revved at standstill.
"load" in column "3" was between 14.9 and 23.9
"bar" % in column "5" was between 62.1% and 101.1%
All items logged logs had "System OK"
I'm assuming it wouldn't say "System OK" if there was an issue.?
Click to expand...
I notice the 'Redirection fail!' on the VCDS Group 140. You have not followed Mac's earlier advice about downloading the in-house VCDS add-in for enhanced Group descriptions.

FSI ECU VCDS Label File Add-In Download

Attached something never before available to my knowledge¹, a VCDS label file for the FSI ECU in English. This file can be used with all versions of VCDS, Lite (Registered or Unregistered) or Full. Prior to this point the text that appears with FSI VCDS ECU Measuring and Basic Settings groups...
www.a2oc.net www.a2oc.net

All looks good to me on the high pressure fuel line.

Andy
 
Good Evening Andy Again,

I notice your reference to possible poor engine start. I see no reference to inspecting/cleaning the critical engine earth below and rear of the nearside headlight.

Andy
 
Andrew said:
Good Evening Andy Again,

I notice your reference to possible poor engine start. I see no reference to inspecting/cleaning the critical engine earth below and rear of the nearside headlight.

Andy
Click to expand...
I cleaned the earth on Monday with a file on the mating surfaces. It looked a bit crusty. However when connected back up it made no difference to the starting.
It's a bit awkward to get at!
I missed the bit about the VCDS add-on. I'll go back and read-up.
I sometimes have a bad habit of skim reading! 😉
 
AndyBa said:
I cleaned the earth on Monday with a file on the mating surfaces. It looked a bit crusty. However when connected back up it made no difference to the starting.
It's a bit awkward to get at!
I missed the bit about the VCDS add-on. I'll go back and read-up.
I sometimes have a bad habit of skim reading! 😉
Click to expand...
You're not alone.
Mac.
 
PlasticMac said:
First, check the fuel rail pressure with the ignition on, but engine not running, that gives you a reading for the electric pump, in the tank. Then start the engine, to check the high pressure, engine driven, pump, (HPFP - High Pressure Fuel Pump).
Mac.
Click to expand...
Have you done this check? At engine start, the output of the electric pump is key, as the HPFP is running at very low engine speed, and from a standing start.
Mac.
 
dj_efk said:
V-Power on an ongoing basis and Cataclean as a one-off shock treatment, if you must - Although running it purely on V-Power from now on should negate the need for that if you’re able to regularly get it nice and hot on fast journeys.
Click to expand...

I gave mine a cataclean a few years back; it didn’t seem to make any real difference. For nearly £150, I’d save the pennies and change the engine earth lead first, after addressing any diagnostic errors. Best to run on vpower for sure!
 
Last week I was browsing the ECP website and noted they sold Bosch coilpacks so I bought 2. I was going to change what I believe to be the original Audi ones and see if this makes any difference. I'll probs do them individually since I'd like to know if it's one of them is causing the misfire.
 
Both "old" VAG coilpacks swapped out and no change to starting. However laken it for a run on a nearby dual carriageway and I didn't detect the hesitation/misfire I had before. Have contacted WOM who are reasonably close and it is booked in for 9th Jan.
 
AndyBa said:
Both "old" VAG coilpacks swapped out and no change to starting. However laken it for a run on a nearby dual carriageway and I didn't detect the hesitation/misfire I had before. Have contacted WOM who are reasonably close and it is booked in for 9th Jan.
Click to expand...
You've booked it in with the best, it'll be money well spent I'm sure..it beats playing parts darts to cure a problem.
 
PlasticMac said:
Were you able to get this
Post in thread 'Purchased a 1.6 FSI' https://www.a2oc.net/community/index.php?threads/purchased-a-1-6-fsi.53903/post-544384
done?
Mac.
Click to expand...

Hi Mac. I haven't loaded the VCDS add-in. But thanks for the reminder. I'll do that now I'm on annual leave and retry.
Is there a list of what groups relate to what?

edit: I'll read the full article on the 'add-in' too.

Also re gunking-up the manifold flaps. Do most people blank off the egr valve?
Seems like these pollution reduction systems weren't given sufficient long-term testing including easy rectification of issues arising!
 
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AndyBa said:
Hi Mac. I haven't loaded the VCDS add-in. But thanks for the reminder. I'll do that now I'm on annual leave and retry.
Is there a list of what groups relate to what?

edit: I'll read the full article on the 'add-in' too.

Also re gunking-up the manifold flaps. Do most people blank off the egr valve?
Seems like these pollution reduction systems weren't given sufficient long-term testing including easy rectification of issues arising!
Click to expand...
Just PM'd you the .lbl for Lite.
Mac
 
Thanks Mac, just cranked-up the laptop and done the biz.
I need to get a laptop battery because I only get about 10mins on the current one, which is a PITA since the car isn't currently at home.

....also just had a looksee at the other file which contains the group descriptions.
Perhaps I ought to look at Group 015 since that seems to record misfires. I'd expect some historic recordings.
 
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AndyBa said:
Thanks Mac, just cranked-up the laptop and done the biz.
I need to get a laptop battery because I only get about 10mins on the current one, which is a PITA since the car isn't currently at home.

....also just had a looksee at the other file which contains the group descriptions.
Perhaps I ought to look at Group 015 since that seems to record misfires. I'd expect some historic recordings.
Click to expand...
Yes, do a scan of the engine controller, for DTCs, and clear them. Then fuel rail, Group 140, and Group 14 & 15, ideally run a log of a drive. Laptop and under the seat.
🤞Mac.
 
PlasticMac said:
Yes, do a scan of the engine controller, for DTCs, and clear them. Then fuel rail, Group 140, and Group 14 & 15, ideally run a log of a drive. Laptop and under the seat.
🤞Mac.
Click to expand...
Still pending a new laptop battery due this week!
Have been on a couple of drives since both coilpacks were swapped and stop/start driving is loads better, the engine isn't dying as per previously. Also starting from warm is better too. However starting from cold requires some churn and gas.
 
So today I snatched a drive with VCDS running. Measuring blocks for 14, 15 and 140 concurrently.
All the 1450+ entries are appended with "SYSTEM OK" however the engine seems to be holding back very slightly, possibly a minor misfire. I can't attach the .csv file but here is a snippet:

I'm not sure what Columns F & K relate to but the entries are mainly "Enabled" with a few "Disabled" !
 

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