Vans , Vauxhall Vivaro ( heavy start-up )?
 
                I have a Vauxhall Vivaro 1.9 CDTI... Before switching off the engine, if I rev the engine for 2-3 times ( 5 seconds ) , it does not start up easily after that... But if I let it down a slope, it starts up easily...
But, If I switch it off without revving the engine, it easily then starts up... 
Any suggestions please?
Regards. Alexe.
            
             Alexe
            
 November 2009