Did you use parts right from doosan for this truck or cheap aftermarket parts feom say TVH....? Alotmof trucks dont operate with sensors and especially O2 sensors that are aftermarket cheap crap.....and as for the water,is normal to see some water coming from the exhaust..lis a byproduct of the catalytic converter.... if aftermarket O2 sensor and spark plugs were installed i recommend installing OEM...
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