GreekDrifter91

i have this really bad coolant leak. and im not 100% sure where it is coming from. its an external leak and maybe a internal as well.

here are some observations.... coolant siting on the keg near primary injectors and oil inj. and sometimes seeing it on the ground after car has been running in one spot. now the other strange part, i am blowing white smoke only under vacuum depends on how much vac. if i floor it exhaust is clean and when i let off and let it coast after about a few seconds get a huge wall of white smoke coming out the back. enough to block out the highway. then it clears out and no more smoke.

one day when filling up on coolant i found a piece of what looked like a o-ring in the filler neck. it was a red/orange color. so this may lead me to believe one of the o-rings on the lower intake manifold for the coolant ports is gone? if so can the engine suck in coolant form those ports from there? and finally the coolant nipple on the rear iron looks to be the colporate for coolant on the block. it looks bad, badly corroded and poor fitment of hose on nipple.

Are there any other spots to check for coolant to be leaking or getting sucked into the engine? im having a hard time to take ff the lower intake manifold becasue my turbo is to big and cant get to two bolts. and i really dont want to have to take the turbo off to take of the manifold. anyway i just find it weird when it decides to blow smoke

Oh an there is NO oil or anything in the coolant and No coolant in the oil so there i believe the keg is still solid. so what are your opinions of whats going on.

RotaryEvolution

iTrader: (30)

if the engine is original it sounds like oil seals on their way out.

the coolant leak is likely the rear iron port you figured. only way yo fix it is with a new hose and a hose clamp, drill the port and plug it or put a new barb fitting into the iron to replace the rotten one.

fix the coolant leak and monitor oil and coolant levels. if the coolant level does not drop but the engine still smokes i would lean on oil seals.

GreekDrifter91

no engine is not original its a rebuilt jdm s4 its probably got no more than 10k miles on it. so you dont think it could be the coolant ports on the lower intake manifold? if so i can just put it back together becasue its being pita to get to those two bolts.

RotaryEvolution

iTrader: (30)

if it's a turbo it could be the lower intake o-ring. it's always good to specify your car...

only way to know for sure is with a cooling system pressure test, a mirror and a light after drying up the coolant with a rag or compressed air.