Water Boiling noise!Did it happen to you??
#1
Full Member
Thread Starter
Water Boiling noise!Did it happen to you??
I dont know if this is happening to some of you or not, but some times when im driving around with my totally stock 93 FD and stop and turn off my car.....
after a few seconds i start hearing water boiling under the hood, but its a light boiling not really strong, which is not making the Water going out at all.....
is this normal or does it indicate something???
after a few seconds i start hearing water boiling under the hood, but its a light boiling not really strong, which is not making the Water going out at all.....
is this normal or does it indicate something???
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tomatoto (08-15-18)
#2
Racecar - Formula 2000
That's the coolant locally boiling at the hot spots in the engine once the coolant is not moving after shut-down. In the stock FD, this is normal, especially with the 13-psi AST cap which was put on in one of the recalls. However, many people use a variety of methods (FC thermoswitch, fan mods, etc.) to lower coolant temperatures to prevent this.
#6
Racecar - Formula 2000
Originally Posted by Jed_only_red_RX7
Thanks Man for the answer...
What year of the FC is that thermostat??
What year of the FC is that thermostat??
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#8
Racecar - Formula 2000
Before I did the Miata thermoswitch, I had mild "boiling" noises whenever I parked the car after driving more than 15 minutes in hot weather. There was no air in my cooling system. Since I did the Miata (same as FC, but different electrical connector) thermoswitch, it no longer does it.
#10
Rotary Freak
Are you also seeing any white smoke coming out of your exhaust at start-up? I had that water rushing sound after shut off when my car's coolant seals went bad due to over heating- necessitating a rebuild. I hope that this isn't the case for you.
#13
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Originally Posted by DaveW
Before I did the Miata thermoswitch, I had mild "boiling" noises whenever I parked the car after driving more than 15 minutes in hot weather. There was no air in my cooling system. Since I did the Miata (same as FC, but different electrical connector) thermoswitch, it no longer does it.
Which is better? How do you perform this mod?
#14
2/4 wheel cornering fiend
Originally Posted by jic
oh man...thats exactly whats happening with me
bit of white smoke at start up and a bit of water rushing sounds after turn off
bit of white smoke at start up and a bit of water rushing sounds after turn off
#15
Rotary Enthusiast
Originally Posted by jic
oh man...thats exactly whats happening with me
bit of white smoke at start up and a bit of water rushing sounds after turn off
bit of white smoke at start up and a bit of water rushing sounds after turn off
I only had the boiling sound once... I was racing the car at a track and I went off track and got stuck. I didn't know if I had damaged my car or not so I shut it off. I could definately hear mild boiling. Normally I'd wait several minutes before shutting off after driving the car hard.
#17
127,338 OEM, 11.5psi
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i just did this on sat, i took the car out for a drive about 20 min of light drivng around 60 mph and oh yea i added disstilled water to it before i left becuase im on 122,789 OEM miles, so i get back home and i was taking something out of the trunk and then there it happend i heard this strong rush of gurggling sound, and then i open the trunk and it was my coolant over flow tank spillin over like it had to much to drink on a friday night, so i let it be and it went away, i wonder if i put to much water in the system. let me know if you guys have done thins
#18
volk racing
iTrader: (1)
Originally Posted by Kento
Don't get alarmed unless you are losing coolant. "A bit of white smoke" at startup could just be your engine burning off condensation that accumulated overnight, and the "water rushing sounds" could be caused by the aforementioned localized boiling.
my cars been running fine and theres no coolant loss
and the white smoke only happens after i garage the car for over 3 days straight.
but thanks for the info.
leaves me at peace for a bit...
#20
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HOLD ON GUYS! That sound is perfectly normal for a stock setup. Upon hard operation or prolonged slow operation at high temperatures, some water bubbles over into the AST after the engine is shut down. Sounds like a coffee pot percolating. I've been driving my FD going on two years now. No deteriortation in power, performance or anything else. Your suggestion on the FC thermoswitch is something I haven't tried yet. If it reduces water temps that much, I say go for it.
#23
Racecar - Formula 2000
The FC thermoswitch is better because its connector is the same as the FD's, so it's easier to install than the Miata one that doesn't match the FD connector. Otherwise, their function is the same.
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Originally Posted by DaveW
The FC thermoswitch is better because its connector is the same as the FD's, so it's easier to install than the Miata one that doesn't match the FD connector. Otherwise, their function is the same.