Referring to similar thread...
"Have done repairs, car won't start"
My repairs were to replace a damaged timing chain guide.
Doing the job properly requires the engine to come out, the heads to come off, the lower sump cover and the upper sump covers to come off.
Remove the timing chain covers, fix the chain guide,

Reassemble.

I didn't remove engine, I did not remove cylinder heads, I did not remove upper sump cover .

I did manage to get the timing chain covers off, fix chain guide and re-assemble timing chain covers around the cylinder head gaskets and the upper sump cover gaskets ................

BUT after testing everything from sensors to sparking to fuel supply I finally tested compression..................

I have no compression on two cylinders, 8 bar on two cylinders, 7, 9, 9.5 and 10 bar on the rest when I should have at least 11bar on all of them ................

So are there any ways in which I can correct this without removing my engine ? It's a speculative question as I'm pretty sure there's only one answer and it's not a nice answer................. so much for taking the short cut ?