Head Gasket? 2004 Toyota Avalon

Mikerizer

Hero Member
Joined
Dec 13, 2006
Messages
334
Points
18
Location
Jackson MS
Website
www.batauto.com
Make
Toyota
Model
Avalon
Year
2004
Miles
185,000+
Engine
3.0L
This is my brother's car. Has been losing coolant, and thought he saw some white smoke from the tailpipe.

I told him to run a compression check. Here are the results:

Front bank: 175, 170, 165-170
Rear bank: 135, 110, 130

I'm thinking he's losing compression between the outer and center cylinders, and burning coolant too.
There is NO coolant in the oil, and no oil in the coolant.
He also ran a combustion leak detection with the color changing chemical, on the radiator filler neck...no color change, so apparently it is NOT pushing combustion back through the water jacket.

Would y'all agree that a head gasket or cracked head is likely the problem?

As always, Thanks BAT!
 

billr

wrench
Staff member
Joined
Mar 12, 2007
Messages
7,869
Points
63
Did he have all the plugs out, and holding the throttle wide-open while taking compression?

I would pressurize each cylinder, like in a leak-down test, and look for bubbles in the coolant.
 

nickb2

Wrench. Diagnostic Tech.
Joined
Nov 22, 2008
Messages
13,010
Points
83
Location
St-Hyacinthe, Quebec, Canada
I would pressurize each cylinder, like in a leak-down test
Yeah, like this idea. Pretty easy to buy. My kit is a OTC job, but others on amazon etc are very similar.

I will link a video, just to show.

This is the kit I use, not too expensive.

 
Top