Yesterday while cleaning the shop curiosity got the better of me and I took the head from the original engine, put a spark plug in #3 cylinder, leveled it with the combustion chambers up and filled #3 with anti freeze level with the head surface and waited. After a short while a small, slow trickle ...

Follow up to original post: After the installation of the 2nd replacement engine (1st one looked suspicious, and turned out to have 3 weak cylinders. Supplier replaced it with a unit that looked well cared for and leak tested very well), the car is back up and running great, but did give me a bit of...

On one hand I am relieved to have found out what caused the problem but on the other I'm really ticked off that Volvo didn't make this a recall, and in my searches for what caveats to look for when buying or servicing a newly acquired model with the 2.5t I didn't catch this. I must have more than ha...

KIMG0227.JPG I pulled the banjo bolt from the replacement engine and sure enough it has a pin running across the passage in the bolt, what appears to be a cap on the spring, the spring and finally the ball. The pin is loose in the cavity but is held in place by the end of the bolt being rolled over...

I just pulled the bolt from the dead engine. No ball bearing or spring, although it certainly looks like there is a machined seat for a bearing to seal against and the end of the bolt appears to have been rolled over to retain something, but any ball or spring is missing. I will pull the bolt from t...

Mrbrian200, you might want to diffuse that ticking time bomb ASAP, I'm not as fast with the wrenches as I once was and I was proceeding cautiously, but even with a lift and shop full of tools it took me an honest 15-20 hours to get this engine out and stripped. Going back in took considerable less t...

Siouxperxc, I have read your previous posts on having a smashed spark plug and losing a cylinder and was wondering if you had found an explanation, and how it turned out. Thank you for chiming in and sharing your experience, the BB from the check valve seems to be the most believable cause. Just to ...

I was also thinking about the guides and valve seats possible fracturing and would like to disassemble the head further to check them out, first I want to get this engine swap finished and get this car back on the road. I did check the throttle plate screws and no smoking gun, they're both good and ...

Good catch, I'll check it out when I get back in the shop later today. I did remove the throttle body and gave it a cleaning when I did the service but didn't notice the screws missing nor did I check them for being snug.

The intake side of the turbo is intact and free from any shavings or metal particals. The running clearance between the shaft and bronze bearing is good. My thoughts are possibly a thrust washer , or snap ring as you mentioned, broke apart and caused the damage. But it would still have to travel thr...