As the US guys are very loquacious, I make a try with you .....

:D

 

Here is the follow-up of this long story :

 

Part 1 :

http://www.twinturbo.net/net/viewmsg.aspx?forum=technical&msg_id=871799

Part 2 :

http://www.twinturbo.net/net/viewmsg.aspx?forum=technical&msg_id=878788

 

I performed a compression test several times with ENGINE COLD, the results :

(I added half a coffee spun of oil for 2nd and 3th attempts)

#1 : 160psi > 175

#2 : 175psi > no other try (to keep it dry)

#3 : 160psi > no other try (to keep it dry)

#4 : 140psi > 155 > 170

#5 : 135psi > 145 > 155

#6 : 160psi > 175

 

I cannot perform it with engine warm. I removed too much stuff arounf the engine (passenger turbo, radiator, some belts ....)

 

#5 has definitively a problem but #4 should also whereas I had no smoke on driver side ....

 

I performed a leakdown test also, I just have an air compressor though.

I listen at the dipstick location, I didn't notice any difference between the differents cylinders, even the #5 didn't seem to leak more than the others. I applied 5 bars, compressor off, and it required more than 1 minute to loose 0.5 bar ... it doesn't leak so much then ....

 

Any advice ?

As the US guys are very loquacious, I make a try with you .....

:D

 

Here is the follow-up of this long story :

 

Part 1 :

http://www.twinturbo.net/net/viewmsg.aspx?forum=technical&msg_id=871799

Part 2 :

http://www.twinturbo.net/net/viewmsg.aspx?forum=technical&msg_id=878788

 

I performed a compression test several times with ENGINE COLD, the results :

(I added half a coffee spun of oil for 2nd and 3th attempts)

#1 : 160psi > 175

#2 : 175psi > no other try (to keep it dry)

#3 : 160psi > no other try (to keep it dry)

#4 : 140psi > 155 > 170

#5 : 135psi > 145 > 155

#6 : 160psi > 175

 

I cannot perform it with engine warm. I removed too much stuff arounf the engine (passenger turbo, radiator, some belts ....)

 

#5 has definitively a problem but #4 should also whereas I had no smoke on driver side ....

 

I performed a leakdown test also, I just have an air compressor though.

I listen at the dipstick location, I didn't notice any difference between the differents cylinders, even the #5 didn't seem to leak more than the others. I applied 5 bars, compressor off, and it required more than 1 minute to loose 0.5 bar ... it doesn't leak so much then ....

 

Any advice ?

 

Stop using words like loquacious.

Euh, sorry, why ?

 

That's the direct translation of the french word ...

seems like #5 has valve problems as #4 has ring problems.

 

-Eric

Eric, (I'm the elctronic guy on ztech.net)

 

You say that because I managed to get 170 on #4 after having added oil 2 times and only 155 on #5 ?

I definitively have some oil residues on #5 exhaust track, what would be the link with a valve problem ?

 

Thanks.

*edit* scrub that lol I need to learn to read..... :slap:

indeed, that's my first impression after reading your story.

 

but it can also be something more serious to #5 (like a cracked piston)

 

-Eric

 

 

Eric, (I'm the elctronic guy on ztech.net)

 

You say that because I managed to get 170 on #4 after having added oil 2 times and only 155 on #5 ?

I definitively have some oil residues on #5 exhaust track, what would be the link with a valve problem ?

 

Thanks.