Overheating

10

Asked by Joshua Jul 15, 2019 at 05:45 PM about the 2006 Subaru Impreza WRX STI Turbo AWD

Question type: Maintenance & Repair

So I replaced my radiator, coolant overflow tank, and
thermostat and bled the system and my car still
overheats. It had about 110k miles on the motor. At
first my overflow tank would bubble and go
everywhere. I bought some blue devil headgasket
sealer and put it in and my car still was overheating
and I'm about to add coolant because it looks pretty
low but idk what it could be. I saw some white smoke
coming out of the overflow tank but it smelled like
coolant so I shut the motor off. Any ideas? From what
I've been told it's a headgasket leak but it doesnt
seem bad like the car runs and sounds good but it
just overheats.

1 Answer

560

The bubbling overflow is almost a giveaway. Says, air in the system. A few things to check: 1) Are you certain you have a 50/50 mix of coolant and water? Too much water will make it overheat. 2) Remove the spark plugs and check the color. They all should be the same color. If not, note which cylinder is off. 2) Get a pressure gauge and check the compression in each of the cylinders. All should be within a few pounds of each other. I expect you would have 140 to 160 psi. If one or more is low, you have a leak somewhere. Could be valves, piston rings, but most likely head gasket. Post your results.

1 people found this helpful.

Your Answer:

Subaru Impreza WRX STI Experts

  • #1
    Brian Dombroski
    Reputation
    150
  • #2
    F_O_R
    Reputation
    70
  • #3
    TheSubaruGuruBoston
    Reputation
    50
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Subaru Impreza WRX
43 listings starting at $4,995
Used Mitsubishi Lancer Evolution
8 listings starting at $19,495
Used Ford Mustang
35 Great Deals out of 1,158 listings starting at $4,450
Used BMW M3
5 Great Deals out of 32 listings starting at $14,995
Used Subaru Impreza
36 Great Deals out of 1,059 listings starting at $2,999
Used Dodge Charger
29 Great Deals out of 601 listings starting at $3,947
Used Honda Civic
104 Great Deals out of 8,230 listings starting at $999
Used BMW 3 Series
74 Great Deals out of 1,680 listings starting at $1,400

Used Cars for Sale

2014 Subaru Impreza WRX STI For Sale
7 listings starting at $25,999
2013 Subaru Impreza WRX STI For Sale
13 listings starting at $19,995
2012 Subaru Impreza WRX STI For Sale
8 listings starting at $17,900
2011 Subaru Impreza WRX STI For Sale
12 listings starting at $13,994
2010 Subaru Impreza WRX STI For Sale
4 listings starting at $15,991

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.