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Re: a lot of vapor comes out htrough the repirator from...
I think you mean 'radiator' and if you do, you probably have a leaking core or tank although it could be something as simple as a pressure cap that isn't screwed on correctly.
Once it starts, you need to stick your head under the hood (open it carefully, you might get a face full of steam or hot water) and search for the source of the leak.
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Check that you are not losing water out of the radiator or that you have to keep filling the "top up" tank all the time. If neither of these are happening then it will only be that the car isn't yet hot enough and is ejecting all the moisture created by the process of combustion out of the exhaust. Cold days and short drives do not help. the excess moisture left in the exhaust system rusts it out faster and low temps in the engine can cause sludge build-up. If you use the car for constant short cold weather trips, and you are NOT losing water, I would suggest you take it out on the highway and give it a good run to dry out all the moisture.
po441 is a netural vapor pressure switch or better knowen as evap purge flow monitor . whats happing is you building to much pressure in fuel tan, with car jacked up in the rear look for a charcoal canister,a plastic box that looks like it has 2 chambers .with hoses going to fuel tank and a 2 wire plug see if its disconnected or hoses are cracked ,broken ,or leaking. good luck ,I really hope I answered your question .
Look for a stuck closed thermostat first. Then make sure there is enough water in the radiator. Next look at the exhaust pipe. Is it black or a shade of tan? Is there steam coming from it when the engine is running? Compression gases getting into the water can mean a bad head gasket or worse a crack in the head or block.
are you loosing antifreez? or bad smell in tank for antifreez if its whitish or a creamy color possible head gasket ,after car warms up do you get any water vapor or excessive moisture out tail pipe. let me know what you find ,good luck ,hope this helped
I'm not sure which sensor your referring to but the fuel pump & regulator are located in the tank. Did anything bang into the car or tank causing it to be on an angle? Get fuel PSI reading while running & stall & go from there. Where is this suction/clicking sound coming from?
Water vapor coming out of an exhaust pipe is normal especially when car is cold and pipes are cold. After complete heat-up vapor will appear clear. It is unlikely that any water could get in your crankcase but you took the extra step to ensure the oil is clean. There was a lot of water in the engines intake and that is what you concentrate on. Dry the top of the engine in the hot sun, after removing all the pockets of water in the intake air system. Add some dry gas and injector cleaner to the gas tank and drive the car enough to clear out any latent moisture. Only if the water damaged a MAF Air Sensor will you need to buy or replace anything. It should start clearing itself up.
Well, this definitely sounds like you have a blown head gasket, and maybe a busted heater core (water vapor out of air vents). Both were probably caused by the car overheating creating a lot of pressure in the cooling system and blowing the head gasket(s) and maybe the heater core. The vapor out of the vents could also be caused by external coolant leakage of the head gasket on the hot engine bringing the vapor inside the cab via the heater fan...
I'd get that checked before any major engine damage happens...