94 civic ex 1.6l coolant bubble issue overheating please help

hondaNothyundai

New Member
I have a 1994 civic ex 1.6l sohc d16z6. Vtec. It overheated about 9the months ago and I still haven't figured it out. I took it to a shop and had them replace the water pump and timing belt. I also replaced the radiator, thermostat(twice), a radiator hose that split, the coolant reservoir. I continue to have the same issue though. After I bleed the cooling system it acts fine. Then after about 30 miles the temp gauge slowly rises from normal(1/4 way up) to 3/4 by hot and drops. If I re bleed it stops. If I keep driving it continues but it stays up toward hot longer and more often. Then when I get home it is either spraying/leaking out of the overflow tank lid or has been leaking from there. I have been asking friends and coworkers and they said to check for head gasket symptoms and that doesn't appear to be the issue. Please help!!!!!! Thanks. =)
 

00siboy

lurkin...
Registered VIP
Head gasket or cracked block/head. The bubbling is exhaust gasses in your cooling system.
 


hondaNothyundai

New Member
Do you know how to check for a cracked head/block? I looked it up but couldn't find anything. Also, would be easier to rebuild/resurface mine or just buy and install a new one?
 


00siboy

lurkin...
Registered VIP
I use a special block test kit from napa, but you can find it at other stores too. This is a decent vid explaining it. http://www.youtube.com/watch?v=Pp3FWH-YnHU

If its just a head gasket you should be able to get away with just a new gasket and resurfacing the head. But if the block or head is cracked you won't be able to see it with the naked eye. A machine shop will have to check for you. In the case of most of these civic engines I would say that you should be fine with doing just the head if thats what it comes to.
 

hondaNothyundai

New Member
Sweet! Thanks for all of the info!!! Really appreciate it. I will post the results after I get this fixed so other people can see it. FIXING MY VTEC!!!!! YAAAAAAHHHHOOOOO!
 
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