Checking with the mechanic again
1. He states it might be as simple as injectors and could be as bad as fuel distributor. Without any further diagnosis, he really can not tell.
2. He also states that there is not that much of the hydraulic fluid left in the reservoir. Since the owner says the accmulators have been replaced, he suspects the problem could be coming out from a leaking pump or rear hydraulic shocks.
Thanks very much for all your help.

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