I bought a mazda 929, 88 model, when the engine winds over it sends exaust pressure n fumes into the radiator makin the water pour out the exaust pipe n the radiator cap n the over flow bottle, is this a manifold gasket or a head gasket or something else
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it would sound like the head gasket has gone. this would need a new head gasket fitting Head Gasket Timing Ford Ranger Mazda How To there are other video if this is not your engine.
WHEN YOU BUY A 1983 MAZDA RX 7 YOU ARE BUYING SOME ONE'S PROBLEMS. SO NOW THIS CAR YOU HAVE TO GIVE IT A COMPLETE CHEK UP.YOU HAVE TO ASK YOU'R SELF HOW LONG IS THIS CAR BEEN SITTIN WITHOUT ANYONE DRIVING IT??? NOW YOU HAVE TO FIGUAR OUT WHERE DO I START,1- GAS FILTER GAS PUMP, GAS TANK- -DOES IT HAVE ANY GUNK? 2-DOSE THE CARBURETOR NEED CLEANIG OR ADJUSTING OR REBUILDING ? 3-HOSES 4-DOES THE ENGINE HAVE GOOD COMPRESSION 5-RADIATOR AND COOLING SYSTEM? OIL LEAKS CHECK OIL PAN SEE THAT THERE IS NO WATER IN IT.THESE ARE THE THINGS THAT NEED AN INSPECTION..I WOULD START FIRST BY CHECKING ENGINE COMPRESSION YOU NEED A PRESSURE GAUGE IF YOU HAVE ONE OR BUY ONE AT AUTO ZONE IS BEST TO BUY THE TYPE OF GAUGE THAT SCREWS IN THE PISTON HOLE. IF YOU BUY ONE ASK A SERVICEMEN FROM AUTO FOR INSTRUCTIONS...
GOOD LUCK AND WORK SAFELY.
Probably the water pump, when the engine is completely cool, open the radiator cap, start the engine, turn on the heat full, and check to see if you have circulation at the radiator cap nosal you should see movement of water if pump is good....
After a radiator refill start and run engine till hot then top up . If it still overheats it may have a compression leak or a cracked head . after the engine is hot ,fit a pressure gage to the radiator run engine under load and if pressure rises quickly it has leak or crack .
yesn it should sounds like you have a blowed head gasket leaking into the exaust you should have the head checked for cracks and check the engine block visualy for any cracks
I don't want to sound hard but radiator what shouldn't or I should say can't "evaporate" The cooling system should be air tight. If you are loosing or somehow coolant is disapearing you nead to have a pressure test done as to see where the coolant is going. You may have a leak that you don't see because it is near the engine or exaust and when it drips it hits the hot engine or exaust pipes and then it will evaporate. In that case however you do have a leak Worst case is you could have a bad head gasket and it is going right out your exaust. Find out where the leak is and take it from there. I hope this helps a little anyway and good luck.
Not sure if there are two thermostats, I know of one that I changed, it sits right above the starter and right below your air box. I had the problem my guage was reading hot on a cool night so I went and popped the hood and (after cooled) opened the radiator resivoir and the results were dry as a bone. I had steam coming from the cap. if you so this be sure to slowly release the pressure from the red cap that reads HOT WARNING DO NOT REMOVE. that is where you pour the coolant/water mix.
After I did that I took it to a shop and had it flushed, cleansed and refilled.....then I was runnin a beutiful bright green. Cost about 69.99 for flush then I found out my water pump pully was locked up and not rotating (not pumping coolant). So I fixed that last night and she's runnin pretty good after 190,000 miles.
water runs out of bottom of radiator when turning over engine
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