Testing injector deviation and fuel pump?

Cossie-boy

Active Member
Nov 25, 2012
274
1
Hi all

I have just got VCDS, never used before, and would like to check the injectors for deviation levels and I also saw a reading for the fuel pump?

I think its measuring blocks but how do I get to them?! and should I test this on idle or whilst driving?

Many thanks in advance

VCDS virgin
 

Cossie-boy

Active Member
Nov 25, 2012
274
1
So maybe easier than I thought!

Address 01: Engine (03L 906 018 HC)

18:46:13
181 Injection amount deviation cylinder 1 0.94 mg/stroke
182 Injection amount deviation cylinder 2 -0.05 mg/stroke
183 Injection amount deviation cylinder 3 0.46 mg/stroke
184 Injection amount deviation cylinder 4 -1.35 mg/stroke
185 Injection release status-Bit 0 00111000

This was at idle, mean anything? good, bad or ugly!

Cheers

CB
 

Cossie-boy

Active Member
Nov 25, 2012
274
1
Done another test this morning at 3500rpm in 3rd and here are the results

11:29:52
181 Injection amount deviation cylinder 1 0.55 mg/stroke
182 Injection amount deviation cylinder 2 0.45 mg/stroke
183 Injection amount deviation cylinder 3 -0.13 mg/stroke
184 Injection amount deviation cylinder 4 -0.87 mg/stroke

So guess they are all ok?

Am trying to get to bottom of a noise which happens more noticeablely above 3k rpm, but the car pulls well, good mpg, starts on button which smooth idle, I'm baffled then!
 

Cossie-boy

Active Member
Nov 25, 2012
274
1
Ok cheers

Is there anything else I should check?

I'm sure the timing is spot on but couldn't find the torsion angle option?
 

Cossie-boy

Active Member
Nov 25, 2012
274
1
Anyone please?

I can find the option to test the torsion synchro angle or high pressure fuel pump
 

Dt-spd

Active Member
Sep 1, 2015
246
0
Rugby
Done another test this morning at 3500rpm in 3rd and here are the results

11:29:52
181 Injection amount deviation cylinder 1 0.55 mg/stroke
182 Injection amount deviation cylinder 2 0.45 mg/stroke
183 Injection amount deviation cylinder 3 -0.13 mg/stroke
184 Injection amount deviation cylinder 4 -0.87 mg/stroke

So guess they are all ok?

Am trying to get to bottom of a noise which happens more noticeablely above 3k rpm, but the car pulls well, good mpg, starts on button which smooth idle, I'm baffled then!

Didnt know this could be checked via VCDS, I've bought one but not used it yet so will have a look. Do you get a change in noise at 3500rpm under quite heavy load ?? I get a noise change in my 2015 Leon FR 184 at that speed, sounds like the pilot injection is turning off and using just main injection.
 
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