Before I start tearing into the motor.
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Before I start tearing into the motor. - 12/13/2007 3:56:25 PM
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96Ls4Dr
Posts: 100
Joined: 2/7/2006
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I have a few questions....
I know I have an intake gasket leak, could this cause antifreeze to go into the exhaust?
If not then it would be a headgasket leaking right?
I've checked the oil and tranny fluid and they are good. But I'm still loosing coolant. Nothing is leaking anywhere though. The exhaust is white all the time.
What all will I need if it is the headgasket?
Gasket set and headbolts right? A Chiltons or Haynes book.
I'm thinking about doing a good tune-up while it's getting other new things.
Distributor cap and rotor, wires and plugs, PCV and Fuel filters, what else would I need to replace or atleast check out? I bought a new t-stat and rad. cap about 2 weeks ago.
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96 Ls Blazer 4Dr 4x4(vin W) Auto a bit over 180K miles
Headgaskets and Intake Gaskets changed at 174K
99 Pontic Bonneville SE
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RE: Before I start tearing into the motor. - 12/13/2007 5:04:55 PM
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Chevy Lover
General Tech Moderator
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From: Vancouver. B.C. Canada
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If your intake gasket is leaking bad enough then coolant could get into the cylinders.
To check for a head gasket I would suggest performing a compression test.
It's a lot easier to replace just the intake gasket than to have to do head gaskets.
The head bolts can be cleaned and re-used, no need to replace them if you do a head gasket.
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Give a man a fish and he will eat for a day, teach a man to fish, and he will sit on a boat drinking beer for a life time
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RE: Before I start tearing into the motor. - 12/13/2007 5:46:47 PM
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96Ls4Dr
Posts: 100
Joined: 2/7/2006
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to do a compression test don't I have to fix the intake gasket first?
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96 Ls Blazer 4Dr 4x4(vin W) Auto a bit over 180K miles
Headgaskets and Intake Gaskets changed at 174K
99 Pontic Bonneville SE
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RE: Before I start tearing into the motor. - 12/13/2007 8:48:18 PM
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Mr Blazer LT
Posts: 282
Joined: 12/19/2006
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Get a factory service manual for your truck if you do extensive engine work yourself. They cost more, but will be more detailed than a Chilton or Haynes manual.
< Message edited by Mr Blazer LT -- 12/13/2007 8:50:45 PM >
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1998 Chevrolet Blazer LT (95% stock)
Pioneer AVH-P7500 DVD receiver
12" Alpine Type-R in a sealed box
PIAA Super Plasmas GT-X bulbs
PIAA Xtreme White bulbs
K & N Drop in Filter
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RE: Before I start tearing into the motor. - 12/13/2007 11:27:57 PM
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Chevy Lover
General Tech Moderator
Posts: 3411
Joined: 6/11/2006
From: Vancouver. B.C. Canada
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quote:
ORIGINAL: 96Ls4Dr
to do a compression test don't I have to fix the intake gasket first?
A compression test measures the pressure in the cylinder, if the pressure is low it will be due to leakage by the rings, valves or the head gasket.
No, you don't have to fix the intake first.
< Message edited by Chevy Lover -- 12/13/2007 11:30:41 PM >
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Give a man a fish and he will eat for a day, teach a man to fish, and he will sit on a boat drinking beer for a life time
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RE: Before I start tearing into the motor. - 12/14/2007 5:18:35 AM
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swartlkk
Posts: 15276
Joined: 5/1/2005
From: Waterloo, NY
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*Moving to Engine & Transmission*
*Merging my reply from this thread*
quote:
ORIGINAL: swartlkk on 12/13/2007 at 10:28:39 PM
It is possible for an intake manifold leak to get into the exhaust as the coolant passages are right next to the intake runners. However, the most common leak path is outside, followed closely by into the lifter valley (to the oil).
To diagnose a head gasket failure, a compression check should be done. By comparing the compression cylinder to cylinder, you can determine if there is a leak.
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Kyle-
04 Rainier
My Restoration Projects
Please Do Not PM for Tech Help
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Printable Version
This one is $40 from autozone. I think this is the one I need.
