Coolant leak from exhaust manifold?

[Tzar177]

I know I'm missing a bolt in the top right of the manifold, but the bolt broke off in the head and I can't get it out. Before I turbo'd my MP3 it wasn't an issue. No leaks. Now that I'm boosted, I guess the boost pressure is causing a leak of some sort in that corner? You can see from the pics thats its quite dirty in that corner. Its greenish/yellowish in color. Coolant?

 

[b_dues]

Are you having problems with overheating?

 

[Tzar177]

Are you having problems with overheating?

No. I'm not sure what the substance is

 

[BOOSTR]

I looked at both pics. Hard to tell if its coolant. Did you wipe it with your finger tip and smell it? Perhaps one or more of your spring clamps is allowing seepage and the fan spray it on your block. I replaced just about every one of my POS spring clamps that came on the car when new after seeing some definite coolant droplets/spray in a few places.

 

[Tzar177]

I looked at both pics. Hard to tell if its coolant. Did you wipe it with your finger tip and smell it? Perhaps one or more of your spring clamps is allowing seepage and the fan spray it on your block. I replaced just about every one of my POS spring clamps that came on the car when new after seeing some definite coolant droplets/spray in a few places.

Theres nothing leaking from any coolant lines that I can see. It all starts in that corner of the manifold where the bolt is missing and it drips or sprays down the block. It must only leak when boosting cuz I see nothing at idle or reving. The substance is sludgey like, not strait up liquid

 

[yudkib]

looks like coolant to me. rent a pressure tester and see if you can figure out whats going on... leaking from the EM doesnt make much sense.

 

[Tzar177]

I'm gonna pull the manifold tonite or this weekend to see if theres anything coming the exit port of that cylinder

 

[Tzar177]

Ok pulled the manifold and found where the leak is. In the second pic above, you might be able to tell that the lower right corner bolt is a tad big. Thats becuz I had to drill and tap the hole for a 10mm bolt. The original hole(8mm)stripped out and even after I tapped to keep the 8mm, the threads would never hold. I guess that drilling a 10mm hole there is too big cuz thats where the coolant is leaking....out the bolt hole. I squeezed the radiator hose and coolant just poured out. I used some thread sealant on that bolt when I reinstalled everything and so far its not leaking. I know its only a temporary fix and that a new head is in my near future

 

[SeR_Cyclops]

So you drilled into a water jacket in the head?

 

[BOOSTR]

Well now that sucks.

 

[Tzar177]

So you drilled into a water jacket in the head?

I guess so. No other explanation I can think of

 

[Spiced MSP]

http://www.mazdas247.com/forum/showthread.php?t=123778701

just a heads up...

 

[Tzar177]

http://www.mazdas247.com/forum/showthread.php?t=123778701

just a heads up...

Yea I saw that. Rather have one that is drop in ready. I don't know of any machine shops or how to do the work myself. Thanks for looking out tho