Just did a compression test.

[osullivant]

Had a look at liqui moly online, including Cheshire5's videos and I might just give that a try next weekend. I will be doing the acetone/atf soak in the cylinders for the week.

I will also go and quizz a pair of local engine rebuilders about their experience of D5s and worn cylinders/ rings..

[jamie1131]

I'll let you know my compression/leak down figures on Wednesday after the car goes to the local Volvo dealer.

If its down on compression I'm not going to dick about stripping the engine to check if I can get away with rings, It will be getting a reconditioned engine.

I'm surprised that your results are dropping. Are you sure the battery is fully charged and spinning the engine over fast enough?

[osullivant]

Originally Posted by jamie1131

I'll let you know my compression/leak down figures on Wednesday after the car goes to the local Volvo dealer.

If its down on compression I'm not going to dick about stripping the engine to check if I can get away with rings, It will be getting a reconditioned engine.

I'm surprised that your results are dropping. Are you sure the battery is fully charged and spinning the engine over fast enough?

My wallet unfortunately dictates a certain amount of dicking around.

Battery was fully charged and providing more juice than I had during my first tests,

I too was surprised but It is kind of logical, the solvent is acting on the gunk on the sides of the piston, which would have been acting to contain compression, less gunk less compression,.... only real hope is that as the gunk dissolves allowing the rings to operate....

I am not really confident that this will work but its worth the wait.... car is off the road anyway...

[jamie1131]

If the gum/funk has been providing that much compression I wouldn't hold out much hope for the bores.
Have you tried starting the car since you began this process? If the compression is that much worse Inwould think you'll notice a depreciation in starting performance.

[osullivant]

Originally Posted by jamie1131

If the gum/funk has been providing that much compression I wouldn't hold out much hope for the bores.
Have you tried starting the car since you began this process? If the compression is that much worse Inwould think you'll notice a depreciation in starting performance.

Started and ran just prior to last test, not much bother starting, I expected a bit of puff and smoke as there was bound to be some remnants of the cochktail, but the bores would have been wet so perhaps compression was not so compromised until it was ran and heated,

in any case just need to wait and see what the man in the engine overhaul shop thinks together with the results of another weeks soaking and a run with liqui molly....

[osullivant]

Originally Posted by osullivant

Started and ran just prior to last test, not much bother starting, I expected a bit of puff and smoke as there was bound to be some remnants of the cochktail, but the bores would have been wet so perhaps compression was not so compromised until it was ran and heated,

in any case just need to wait and see what the man in the engine overhaul shop thinks together with the results of another weeks soaking and a run with liqui molly....

Engine rebuilders told me today that they have seen this before, sometimes new rings will be enough but the alternative is a bore and sleeve so that the existing pistons will do.

They had an engine recently that had head problems which were fixed but then the cleaning process caused low compression.

[davebb]

Hi Thanks for posting what adaptor you used but can you please let me know what compression tester kit it is that you got for £70,
Good Luck,
Dave

[osullivant]

Originally Posted by davebb

Hi Thanks for posting what adaptor you used but can you please let me know what compression tester kit it is that you got for £70,
Good Luck,
Dave

https://www.amazon.co.uk/gp/product/...?ie=UTF8&psc=1

I got a real bargain.... but I need about 399 more similar bargains to make up for the heap of junk volvo....

[jamie1131]

So the independent garage had my car in today. His opinion was that it is breathing quite heavily and it probably is the rings. He spent a while looking for a recon engine but couldn't find one available.
He has flushed the engine using a BG products additive and changed the oil/filter adding another additive from BG designed to help free up rings. The result so far is a very smokey engine.
I'm inclined to believe it has done something, removing gum from around the pistons but if it is going to be a benefit, only time will tell. Should have done enough miles by next week to tell if the smoke has settled down.