I raced my car, and after i smelled coolant, so i pulled over and checked under the hood and there wasnt a leak or anything. I ran my car again(diffrent day) and that smell came back i quickly pulled over and check under the hood and nothing again no sign of a leak.

I asked a couple of people and some said it could be the heater core or a blown head gasket.

Im gonna do a pressure check on my coolant system to see if theres any leaks. Anyone have an idea of what it can be?

 

heater core is suspect. check under the passenger floor under the dash toward the center, see if there are traces of coolant or anything sticky. should be behind the radio where it's the worst

 

most likely this^^

how does it run? check your oil and see if its milky.

 

Putting the pressure tester on it should expose the leak, if there is one. Turn the heater on hot to open the heater valve.

 

might have to let the pressure tester sit awhile. my core has such a minor leak that it literally only drips a few drops on a couple hour drive. i have never seen a car leak like this...usually they just **** on the floor. rock auto has spectra cores for $32 which sure beats nearly $300 for oem. the difference is oem is brass and the spectra is coated aluminum

 

I checked my oil and there was not sign of milkyness. My car still runs strong, it doesnt sputter or anything.

What are symptoms of a blown head gasket? besides milky oil.

 

compression is down in one or more cylinders and or with coolant disappearing.

you should have a hose that comes out of the head going to the heater core and one from the core to the thermostat housing. when you take a look under the dash and smell coolant and or see it just take the hose running to the core from the head and attach it to the thermostat housing. it bypasses the core and completes the coolant loop. do that till you get it fixed

 

If the smell is most apparent when "pushing" the car and you have a stock rad, check the rad top and bottom caps, the crimps tend to loosen up and leaks will form, more so when engine is pushed hard.

These leaks can be hard to spot, [especially if it is the lower cap] as they dry up very quickly due to hot rad. 94

 

so my coolant was pretty low, i havent done a compression test or the coolant pressure check yet.

 

I think I have the same scenario going on. Every once in a while over the past few weeks I can smell coolant when I crank the defroster but it usually goes away. I was screwing around with the center console the other day and noticed the pass. carpet was moist/sticky (not happy). Drove the car around that night heat seemed to be working just fine, no fogging up on the glass or anything (and it was raining pretty hard). When I got home I parked it and set the heat to inferno mode to see if I could witness leaking in progress. Got under there with a flashlight and all I could see was little random "puffs" of mist coming out every few seconds. There is also a very small amount of green colored residue on the white plastic of the heater unit. I'm assuming this means my heater core must have a really small leak or something? really not too pumped about the prospect of replacing the core and all the BS that comes with it.