ej1 d16z6 My radiator isnt leaking, but the antifreeze always seems to dissappear lik ein a week i had to fill up with a quart... what could be going on? -thanks

 

leak in the line? check all the hoses.

 

no leaks anywhere.... i rapleced bypass coolant hose. radiator cap isnt leaking.. resivor has pressure so i know radiator doesnt have a leak

 

what coolant are you using?

I know it sounds biazzare but I had this problem in my '00 civic until I drained it and refilled it with genuine honda coolant. It wasn't draining quite as fast as yours was though. Probably a leak if it's going that fast.

 

If its not leaking then its burning. Think blown headgasket.

 

Smell your exhaust pipe, if it smells like coolant ... there ya go, Head gasket. Just did mine recently...

 

sounds like a bad head gasket to me.

I had a car do the same thing, we finally replaced the HG and it went completely away. Start the car and see if the exhaust smell like a hint of coolant, then you'll know.

Or do a leak down and compression check to be sure.

 

Any smoke from the exhaust?

 

There is an echo in here !

 

check the times man, literally seconds apart. Mine is longer so I win!

 

HAHAHA good ONE hahaha

 

Floor the car and look for white smoke out of the exhaust, I believe white smoke is burning coolant, and black smoke is oil or perhaps running rich I forget what black is.

 

black is fuel, grey is oil, and white is coolant/water.

 

Oil burns blue.

 

and if there isnt white smoke then i definetly do not have a blown head gasket right? because i did replaced it about 6 months ago. i gutted my cat so it always smells like **** so im not sure if i can tell by the smell. -thanks

 

well the coolant is going somewhere, and if its not leaking then, its probably the head gasket. Did you use new head bolts, or did you re-use the factory bolts?

 

my friend had this problem with his b16

it would just disappear... just like casper... although it didn't re-appear

but anyway it was his head gasket

 

btw is the oil milky or anything out of the ordinary?

 

nope. oils alright. didnt notice any smoke. and ya i reused the factory bolts..

 

Thats your problem. You cannot reuse the factory head bolts. They Strectch like a damn rubber band andwill not tighten correctly no matter what you torqued them too.

Get a new OEM head gasket and ARP head studs.Be sure to srpay the gasket with copper.

 

Thats not exactly true. Honda does state that they shouldn't be reused, but thats not to say that lots of people do. For what its worth both honda dealerships I deal with reuse headbolts. That said if you are going to replace the headbolts you might as well go for ARP headstuds.

To the OP, i've seen tons of blown honda headgaskets with no outward signs besides disapearing coolant, no oil/coolant contamination, no white smoke, no overheating, just coolant loss. I've also seen tons of them go through headgaskets repeatedly after the first one blows.

 

This happens many times because the engine is ran at such high temperatures for a prolonged period which promotes warping of the head surface. Then upon repair, the head is not resurfaced.

 

I'd either have the head checked, or try a slightly thicker head gasket with arp head studs to really clamp it down good.

DONT RE-USE honda stock head bolts. NOT A GOOD IDEA.

 

I had this same problem. Trouble was that the hose going into the head was split about 1/5 of the way around on the bottom side, and the split was right next to the lip that the hose clamps on, so it held in place while i was checking, but when the rpm was changing, it was spitting it out, then holding it, then spitting some more. It took me forever to figure it out, and it was leaking the entire reservoir every day.

I don't know much about cars, but I try to help when I can!

 

Dissappearing huh? This sounds like some of David Blaines handywork........