1999 Suburban Coolant leak in high pressure line

Tiny
SKIWOLF
  • MEMBER
  • 1999 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • 167 MILES
What is involved in repailint the fitting in the top of the engine block for the high presure line that conects near the front on the top of the Enging. I have Steam coming out there. What parts do I need to fix it.
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Sunday, February 13th, 2011 AT 10:10 PM

7 Replies

Tiny
WRENCHTECH
  • EXPERT
There are no high pressure lines in the cooling system. The whole system has equal pressure.
I'm not sure what fitting you're referring to. Can you post a picture?
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Sunday, February 13th, 2011 AT 10:35 PM
Tiny
SKIWOLF
  • MEMBER
I'll send a pic tomorrow if I can. High presure line might not be the roght name for it, but, Steam spews out at a pretty high rate.
It is not water coming out, it is steam. It is where a hose conects on the top of the engine block, in front, right behind where the belt that runs the power stearing water pump etc sits.
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Monday, February 14th, 2011 AT 2:10 AM
Tiny
WRENCHTECH
  • EXPERT
That just means the system is low on fluid and overheating. Get me a pic of the fitting and we'll see what it takes to fix it.
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Monday, February 14th, 2011 AT 2:13 AM
Tiny
SKIWOLF
  • MEMBER
Ok,

It was real low when I first noticed it, but, after filling up the radiator & the plastic reservoir bottle, it still steams up.

I will have pics of my car to you tomorrow.
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Monday, February 14th, 2011 AT 2:34 AM
Tiny
WRENCHTECH
  • EXPERT
That's what I suspected. That is a pot metal "coupler" fitting that threads into the intake manifold. They rot out frequently. You can pick one up at Chevrolet pretty cheap but you may have a problem getting the broken piece out of the manifold and repairing the threads. It can be done but you have to know what you're doing.
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Monday, February 14th, 2011 AT 2:41 AM
Tiny
SKIWOLF
  • MEMBER
Ty FOR YOUR HELP, i'LL LET MY MECHANIC HAVE A SHOT AT IT
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Monday, February 14th, 2011 AT 2:56 AM
Tiny
WRENCHTECH
  • EXPERT
Closing out question
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Friday, March 11th, 2011 AT 4:37 PM

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