Whats happening guys


I have a 2001 ds720 with je 720 big bore kit installed. i took it on a ride last year and the nut on the head stud poped off. i fixed that and then i found out that the watter pump seals were bad and replaced them. still smoked white. i did clean the carb out and found a lot of sand in it. im just wondering is my valve guids and seals are bad and thats whats causing it to smoke white almost no color just white.
I mean it has new piston and rings new head gasket and new water pump and thermastate gaskets what else could it be.

Thanks ahead of time for your feed back.

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RON WOODS PORTED INTAKE MANIFOLD (177.45)
MIKUNI TM45 CARB - (405.00)
BARNETT 9DISK CLUTCH AND HEAVYDUTY SPRINGS (199.99)
UNIFILTER (24.00)
K&N OIL FILTER (11.99)
JE 720BIG BORE KIT 105MM SLEEVE, JE 11:5:1 PISTON, RINGS, CIRCLIP, RISTPIN - (365.00)
WEB CAMSHAFTS 110 GRIND CAMS - (260.00)
WEB CAMSHAFTS RACE VALVE SPRINGS WITH TITANIUM RETAINERS - (147.00)
2004 HEADLIGHT ASSEMBLY (65.00)
RISER BAR CLAMP - (CAME WITH BIKE)
INVISION POWER SPORTS DEVOURER GRAPHICS KIT - (339.00)
WACO CLEAR RADIATOR HOSES - (100.00)
MOTION PRO TWIST THROTTLE FOR TM45 CARB - (45.00)
WOODS RACING FULL EXHAUST - (552.25)
WOODS RACING IGNITION BOX - (CAME WITH BIKE)
AC RACING NERF BARS - (CAME WITH BIKE)

 

white is water, head gasket is the first thought

 

I am with Sandman. Did you replace the headgasket after that stud bolt came off? Either way, that is the first things I would fix at this point. Make sure those parts are super clean when you re-install...

 

Sounds like a head gasket to me also. Make sure the head is perfectly flat and torque the bolts in the correct order and sequence. BTDT.

 

thanks guys I ordered my cometic gasket top end kit today should be in in about 2 weeks also while the head is off i might as well have them lapp the cylinder deck and the head and im going to replace the valve guids and seals.