is there someplace that i can learn about checking valves on a 2002 2.7t

Asked by Aug 13, 2017 at 06:05 PM about the 2002 Audi A6 2.7T quattro Sedan AWD

Question type: Maintenance & Repair

after doing a timing belt, water pump and thermostat housing i tried to turn
the engine over with a ratchet to make sure everything was lined up and
tracking properly. i can make almost a half revolution before something stops
it. i fear a valve is bent or broken. i have the valve covers off but i don't see
anything obvious yet. where can i find a video or something to walk me
through pulling and then resetting the cams? any specialty tools needed to
do that and also valve replacement if i find one broken or bent?

3 Answers

32,295

Make sure it isn't just engine compression stopping you from turning the crank by hand, by pulling the spark plugs.

1 of 1 people found this helpful.

i haven't pulled the plugs but it does feel solid like it's metal against metal. thanks for the thought and input.

32,295

well short of pulling the heads, you can run a couple tests to check for valve damage. One is with a compression tester, but for those to work you need to crank the engine to close the intake and exhaust valves. You can also use a leak-down tester and air hose, pressurize the compression chamber with intake valve in closed position with the throttle body removed, if you have air blowing back into it, you have an open or bent valve. (conversely if you get pressure into the crankcase you have a blown piston ring or hole in the piston.) You can try and determine if valve springs and stems are 90 degrees and same height, but that may be too hard to see visually, it doesn't take much at all to bend a valve. When all is said and done it might just be easier to remove the heads and have them reconditioned.

Your Answer

A6

Looking for a Used A6 in your area?

CarGurus has 7,666 nationwide A6 listings starting at $900.

ZIP:

Audi A6 Experts

  • #1
    JRKPerformax
    Reputation
    270
  • #2
    Tom Demyan
    Reputation
    250
  • #3
    tenspeed
    Reputation
    210
View All

Related Models For Sale

Used Audi A4
241 Great Deals out of 12,249 listings starting at $1,450
Used BMW 5 Series
475 Great Deals out of 16,560 listings starting at $500
Used Audi A8
34 Great Deals out of 1,573 listings starting at $3,900
Used Mercedes-Benz E-Class
534 Great Deals out of 21,858 listings starting at $1,999
Used BMW 3 Series
1,154 Great Deals out of 34,387 listings starting at $1,000
Used Audi S6
8 Great Deals out of 694 listings starting at $6,988
Used Audi S4
21 Great Deals out of 1,577 listings starting at $3,850
Used Mercedes-Benz C-Class
773 Great Deals out of 26,308 listings starting at $1,595
Used BMW 7 Series
140 Great Deals out of 5,222 listings starting at $2,995
Used Honda Accord
858 Great Deals out of 88,772 listings starting at $1,444
Used Mercedes-Benz S-Class
116 Great Deals out of 7,535 listings starting at $1,200

Used Cars For Sale

2018 Audi A6 For Sale
3,514 listings starting at $45,276
2017 Audi A6 For Sale
4 Great Deals out of 524 listings starting at $31,788
2016 Audi A6 For Sale
16 Great Deals out of 509 listings starting at $19,885
2015 Audi A6 For Sale
38 Great Deals out of 857 listings starting at $18,998
2014 Audi A6 For Sale
34 Great Deals out of 606 listings starting at $13,991

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.