it's a 95 honda civic with d15b7 motor and d16y8 transmission

just did an a/t to m/t swap and this happened! it seems to only leak in reverse ( i could be wrong) .. here are pictures:







any ideas?

 

morning bump

 

I'd say either the upper or lower rad hose has a pinhole leak and its spraying coolant on the slave cylinder.

 

good input. ill definately check that. it's weird cause i just changed the hoses and they are brand new

 

ARE YOU SURE IT'S COOLANT AND NOT HYDRAULIC FLUID FROM THOSE WEIRD LOOKING CLUTCH HOSE CONNECTORS. DID YOU USE TREAD SELANT ON THEM ?
scooooz the caps.

 

Is your coolant bleeder valve open? Although I would think that there'd be a bigger mess than that...

 

im pretty sure it's coolant. it's green and smells like coolant! i doubt it's hydraulic fluid because I checked the levels of it. Coolant is disappearing from the reservoir but not hydraulic fluid. im going to look into the radiatar hoses tonight.

 

i was a dumbass and loosened it while the car was hot -__-'. coolant shot out like a geyser... that was my first thought, but then i tightened it and there's still leakage.

 

You must have put coolant in there instead of brake fluid lol But for real try to clean it up and rev the engine for a bit to see if any coolant shot out of no where

 

another POSIBILITY.... is that your tranny cooler lines have a pin hole internaly inside the radiator so the green fluid is coming out of those metal lines coming of the radiator.... either cap those 2 tranny lines or just replace the radiator....

 

Make sure the upper water neck has both bolts in it and thery're tight, look on the bottom of it for signs of leakage. The plastic end tanks on raditors are also a common failure point to look at.

 

ill try it matthew haa.

i was also thinking that too so i put those crappy plastic things on the ends of it but it still leaked coolant. im gonna see what i can plug em with but that radiator is brand new 0_0.. bought it direct from the dealer when the car as a/t

will do

thanks for all the input guys! i checked when i got home today and for some reason... there wasn't any leak as of tonight. i'm gonna try all the suggestions when i see it leak again.

 

to try and pin point it you could always just zip tie some small rags around certain areas drive it quickly and see which rag is wet...

tho it could be since ya just did the swap maybe you just had alittle puddle of radiator fluid on the car and driving it was enough to slosh it around and look like it was leaking...

 

Don't plug the hole, fill and seal it up with something

 

hmmm it might be the head gasket! i notice that the area where the head and block meet is damp and coolant seems to be dropping from there. it was a huge leak today... could anything else cause the coolant from seeping over/through the head/block? i don't have a front T mount.. could that cause the engine to shake and leak out coolant?

it leaks at times, but doesn't leak at other times... so it may be the missing T mount damnit.. if it was the head gasket, it would constantly leak right..?

 

coolant doesn't normally leak externally from a headgasket.

 

warped head ? i gotta do more research!

 

I doubt it unless you've severly overheated the engine.

 

it's happened at one point .
i did a compression test like a month ago.. all cylinders are fine.. its not the hoses either.. i just checked them.. i might as well go purchase one of those UV coolant leak detector kits.

 

Your problem is probably the head gasket. My car is doing the same thing right now, but I have a Cometic MLS gasket, so I don't know if that's any different. Get a new one and have your head resurfaced while your at it..show the machine shop the head gasket your going to use.