Leak Down Testing

[rbodor3]

For those that have done a leakdown test on our cars, this is the first time I've done it. Advice, tips, walkthru accepted....

[rbodor3]

Well it's as easy as any other leakdown test, for the most part. With of course the exception of the TDC mark on the head

FYI this requires a 30mm socket for S60 to turn hand crank the car

Here's my results, and I need some help interpreting this if somebody can step in. I did multiple checks and took an average number to make sure these were reliable, all @ about 100PSI

(read from pass->drivers sides)

1. 25% all heard thru dipstick

2. 27% all headr thru dipstick

3. 20%, all heard thru dipstick

4. 20% dipstick

5. 15% dipstick

I think I should do a compression test because these are a bit off from each other more than I would like. There was also a massive amount of oil leaking into the 4th cylinder, i will post pictures this evening.

[S8ET6]

I'm not quite following you. How do you know oil is leaking into cylinder # 4?

Are you saying that you pressurized your system to find boost leaks or conducted a compression leakdown test?

[rbodor3]

I posted this into the performance section, because my new question really is more about the performance of the engine's being affected by these numbers not really maintenance, http://volvospeed.com/vs_forum/index.php/topic/128755-leakdown-test/

[MrWinkey]

:lol:

:unsure: