Go Back  AudiWorld Forums > Technical Discussion > Engines > 4.2 V8 Discussion
Reload this Page >

What fuel pressure specified?

What fuel pressure specified?

 
Old 01-25-2019, 02:45 AM
  #1  
AudiWorld Newcomer
Thread Starter
 
Join Date: Jan 2019
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
Default What fuel pressure specified?

Hello all!

Got a quick question I am not able to find right answer to everywhere I looked.

What is the specified fuel pressure for (4.2 fsi 257kw 2008 audi a8 d3) with coolant temperature 90C (warm engine) ?

Currently my VCDS shows 25bar in Mess Block 106 when coolant temperature is 90C, when cooling temperature was 50 it was still 25bar. I might be wrong but I think that a year a go when I check this it was 50-60bar.

Why I need this ?

One of the Fuel injectors died, only 7 new were available so I put 7 new injectors and 1 old , but it was checked and cleaned on FSi injectors cleaning machine at company who only works with injectors.

After everything was put together now I have misfires , sometimes VCDS will show all cylinders misfiring and sometimes only couple. Misfire count will go high when engine is cold and Engine module will show following errors: Randon/multiple misfires detected and for each separate cylinder.

On warm engine, you can feel engine is not working smooth , when you release brake pedal car does not go forward smoothly. Misfire count is 1/0 changing when warm engine. No errors in module, but car still shakes and engine work is not smooth.
Glebpet is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Zeca
A4 (B5 Platform) Discussion
5
10-11-2011 05:06 PM
wirelesstj
Audi 5000 / 200 / V8 Discussion
2
07-15-2009 06:02 PM
i-DAR
A6 / S6 (C5 Platform) Discussion
11
07-02-2008 02:56 AM
sloth-fratelli
Audi 100 / A6 (C4 Platform)
3
05-24-2005 11:04 AM


Thread Tools
Search this Thread
Quick Reply: What fuel pressure specified?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: