I think I blew my head gasket (Help me diagnose)

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Jun 17, 2010 | 03:06 PM

#21

Braineack

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Originally Posted by Braineack

Where is it spraying fluid from!?

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Originally Posted by Braineack

find it, then post about how you had to replace a rubber cap or hose or whatnot and how your gasket is fine.

Quote:

Originally Posted by miataspeed2005

Found it! It's the heater hose all the way in the back of the head, there's a tiny hole and it sprays when I rev it... But why is my boost so low?

boost, dunno what's controlling it?

Jun 17, 2010 | 03:13 PM

#22

wittyworks

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i think you should fix the smoke problem first, then work on the boost problem. Maybe while fixing the first, you find whats causing the low boost.

Jun 17, 2010 | 03:21 PM

#23

chicksdigmiatas

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I cant wait to hear where you found the boost leak.

Jun 17, 2010 | 03:23 PM

#24

levnubhin

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Originally Posted by levnubhin

Check them heater hoses.

Quote:

Originally Posted by miataspeed2005

Found it! It's the heater hose all the way in the back of the head, there's a tiny hole and it sprays when I rev it... But why is my boost so low?

I'm ******* awesome. I love diagnosing **** from 1300 miles away lol.
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Jun 17, 2010 | 03:54 PM

#25

miataspeed2005

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One down, one more to go... It's a mbc contolling the boost, all my couplers are good, pipes are good, wastegate moves fine, bov is good, turbo is good, mbc hoses good... Maybe my hallman mbc went to ****? Can't think anything else, both laptop and gauge recorded boost at 10psi

Jun 17, 2010 | 03:59 PM

#26

Newbsauce

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What is the stock PSI on the wastegate? My vote is the MBC failed and your running a stock 10 PSI gate.

Jun 17, 2010 | 04:06 PM

#27

miataspeed2005

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From: Connect-I-Cut

Probably 8-10 psi, it came from a t28.

Jun 17, 2010 | 04:13 PM

#28

Cspence

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Quote:

Originally Posted by miataspeed2005

Found it! It's the heater hose all the way in the back of the head, there's a tiny hole and it sprays when I rev it... But why is my boost so low?

Try adjusting your mbc and see if your boost changes (in either direction)...maybe the mechanism inside is stuck or something. If your couplers / clamps are good, your wg is good, then it has to be something stupid like the mbc not functioning properly....There's only so many things that can affect boost...

See all that tearing up this morning over nuthin

Jun 17, 2010 | 05:37 PM

#29

miataspeed2005

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From: Connect-I-Cut

^^^^yeah I think I'm gonna take the mbc apart and clean it.... Chris you were shaking so much this morning cause you were afraid to help me do my head gasket, I think I even saw a tear on your eye too.