93cb7 has coolant leak n cant figure out where

[93slammed4dr]

I have a 93 cb7 f22a6 it began leaking coolant from behind the im. I have already replaced the coolant pipe and both o rings using honda bond as dealer told me too
Leak still occured but only after driving it appears to be leaking from where the thermostat housing meets water pipe.. im at a loss my car is my daily n is un drivable sorry for spelling errrors im on my phone

[dmar155]

i have a similar issue. well you replaced the water pipe so the only hoses that i know of in the intake manifold area are the two small hoses that run to the iacv. there is also a hose shaped as a U. this u hose i beleive is under and next to the thermostat housing. i heard that this hose goes bad because it can rub on the rear motor mount causing it to wear and tear. then you have two heater hoses runing from the block to the heater core. you can follow these two hoses from the firewall to the block. i beleive on the firewall they are about 2 to 3 inches apart. the left hose stops above the bell housing of the tranny and below the dizzy a little off to the left. the right hose runs to the front of the engine not sure where exactly.

look very carfully at these hoses for cracks, swelling and a greenish film of the surface of where its leaking.

also try to post a pic and let us know if you found the problem.

[93slammed4dr]

It leaks a lot o mean if I let it run for about 15 min itll losr about 50% fluid it keeps leaking from what appears to be where the pipe meets the water neck if I squeeze the lower hose u can hear if sucking air n pushing it back out but cant figure out where also have replaced im gasket

[Stoner51]

Those little hoses will cause that much coolant to leak. I had the same prob earlier this year.
Replace them all.

steve

[93slammed4dr]

Which hoses do u speak of ... all the little ones ?? It will only leak coolant after it warms up or I drove it. .. but do u happen to remember the hose size n how much I need

[10thAnnivCB7]

if you cant find the leak outside it might be inside and you might be burning it ,, keep looking and hope you can find an external leak

[Stoner51]

Yes it may not leak until after the car is warmed up. Then it will spurt out of the leak.
I think I used 5/8 fuel. I just bought 10 feet today to do my h23im swap.

I changed out all but two this year. Thought I fixed the leak because it wasn't leaking. And as soon as I turned off the car. It leaked all over the back of the engine

Steve

[dmar155]

all the little hoses on the top of the intake manifold are vacume lines. they are small diameter hoses but the hoses that are slightly larger hold colant in them that run to the idle air control valve and fast idle control valve. you can see what these valves look like by looking in the begginers forum in a sticky that sais "read here first". in that sticky you will see a link named "erratic idle fix" it will have a picture of the valves and one picture will show you the coolant lines that run thru them, a little hard to see but its there. if you are burning the coolant it can be due to a warped head maybe, or a blown head gasket. if a blown gasket your car would run like crap.

[stretch JDM]

If it was me I'd take it to a radiator shop and have a pro do a pressure leak down test.Also replace the hose clamps. The OEM clamps are a bitch to squeeze sometimes.

[cloudasc]

Original Poster aka OP, If you do not know how long ago your coolant hoses were replaced, REPLACE THEM ALL! The coolant hoses that are under the intake manifold are notoriously overlooked... hell they were one of the first things to "go wrong" with my car cb after I bought it.

Yes they are a pain to replace, especially if all you got is a folding plier/knife thingamajig, its 90*F+ outside, and I spent a good half hour at least trying to replace those two hoses from the top and passenger side. Oh for hoses that are stuck on "like they are glued", take some pliers, grip the hose, and twist/spin it around the nipple.

Also I'm not a fan of the OEM clamps, I prefer the screw type, just don't over-tighten.

[ShowStopper71z2]

When i replaced all my coolant hoses i used this tool. Really cuts down on on the cussing. http://m.sears.com/productdetails.do...00P&sid=&psid=

[93slammed4dr]

Thanks guy I know its not burning it due to the large green stream of coolant that runs down my driveway.. I plan yo preaaure test it n then replqce all t he hoses but I appreciate all the help of that doesnt fix it idk might part it out lol

[dmar155]

Well i just found my leak yesterday its just a 2 - 3 inch hose shooting straight up from the thermostat housing.