A while back I helped a friend's son purchase a 2k Caddy with the BLS engine. It went well enough except after a journey it would pump coolant out the overflow. After numerous tests i diagnosed head gasket and sure enough was putting compression from no.1 into the water jacket. Did the repair which included a camshaft kit and injector re-seal. Started and ran fine but could not get it up our driveway (generous slope) without stalling. On the flat it would go but needed 2 or 3 downshifts to get it up moderate hills. No codes showing.
Checked compression - all about 39b, checked and adjusted torsion to -0.5, checked operation of turbo actuator - ok, checked vac pressure - 25mb at reservoir, pressure tested charge air system found leaks at intercooler and turbo silencer, replaced both. Checked fuel lift pump - (marginal), tested tandem pump, found low pressure on load and leaky seals, re-sealed so pressure now 8b + at pump about 1b in return. Had turbo rebuilt. Checked exhaust for blockages - clear.
Bought VCDS, the turbo pressure seems a little low and even hesitant at low revs otherwise not sure what some parameters are telling me!
Still no codes.
So here I am thinking I am no good at this any more
Anyone got any suggestions? Burn it and claim the insurance not being an option.
