1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Eating Coolant After Maintenance? Please help troubleshoot

Discussion in 'Technical Chat' started by iJDub, May 22, 2013.

  1. May 22, 2013 at 9:39 PM
    #1
    iJDub

    iJDub [OP] Well-Known Member

    Joined:
    Dec 26, 2010
    Member:
    #48225
    Messages:
    825
    Gender:
    Male
    So my truck was running fine no problems...I decided to do a tune up:

    AFE air filter
    MAF cleaning
    Spark plugs
    Oil change
    Differential / transfer case fluid swap
    Intake system cleaning (3M kit)

    Everything seemed normal...I did all the work myself..I'm mechanically inclined...

    Well shorty after I ate the entire reservoir of coolant. I just so happened to be doing coolant swap the day I noticed it was on empty. I flushed the system according to manual and filled it back up. Now after a tank of gas it's back down to empty. WTF?

    No overheating, no smoking, but tail pipe seems to collect a lot of moisture...no obvious leaks anywhere. Possible headgasket leak?

    Please help troubleshoot.
     
  2. May 23, 2013 at 6:27 PM
    #2
    iJDub

    iJDub [OP] Well-Known Member

    Joined:
    Dec 26, 2010
    Member:
    #48225
    Messages:
    825
    Gender:
    Male
    Bump
     
  3. May 23, 2013 at 7:09 PM
    #3
    worthywads

    worthywads Well-Known Member

    Joined:
    Jun 25, 2011
    Member:
    #58841
    Messages:
    3,447
    Gender:
    Male
    Peoples Republic of Boulder
    Vehicle:
    05 5-lug access I4 Stick, 70 Challenger Vert
    Top up and see if it drops again? Could be simply not full after the swap. I don't see how any of the previous maintenance would cause coolant use.

    Are you sure your coolant was full before the maintenance?
     
  4. May 23, 2013 at 8:00 PM
    #4
    koco

    koco Well-Known Member

    Joined:
    May 25, 2012
    Member:
    #79503
    Messages:
    239
    Gender:
    Male
    Bay Area Ca.
    Vehicle:
    '01 Taco
    Around $26,000 worth of unleaded in the fuel tank.
    Yeah, it probably wasn't all the way filled up. It sucks the reservoir fluid into the radiator when it cools down.

    Is the radiator all the way full when you take the cap off. If the headgasket was blown, there would probably not be enough vacuum in the system to suck in the reservoir fluid after it cools down.
     
  5. May 24, 2013 at 1:42 PM
    #5
    iJDub

    iJDub [OP] Well-Known Member

    Joined:
    Dec 26, 2010
    Member:
    #48225
    Messages:
    825
    Gender:
    Male
    I topped it off and it's still draining the reservoir. There's no leaks outside the engine which is why I think it may be the head gasket. No over heating no leaks. About 1 reservoir per gas of tank. Wtf?
     
  6. May 24, 2013 at 1:50 PM
    #6
    coma09

    coma09 Senior Member. Hey, what's That supposed to mean?

    Joined:
    Jun 22, 2009
    Member:
    #18751
    Messages:
    210
    Gender:
    Male
    BC Canada
    Vehicle:
    2013 taco access cab 4x4
    Putco led map light bulbs, bed mat, Xiang trifecta tonneau, blackout front emblem, paint tow hoop, led bed light strip, scan gauge II, debadge, buff paint, oem fog light kit, 1000w inverter, Viair 300P compressor, Contura V dash switches, chop last L bend from exhaust, remove charcoal air filter, extinguisher, mag light, Ss side steps, kayak rack, tailgate security, bed mat security
    Check the oil. Is it clean or milky? Could be the head gasket.

    Most likely a pinhole in the rad from a rock. Could be a loose hose connection

    A good go over with a flashlight should find a damp spot where it's leaking.
     
  7. May 24, 2013 at 2:01 PM
    #7
    iJDub

    iJDub [OP] Well-Known Member

    Joined:
    Dec 26, 2010
    Member:
    #48225
    Messages:
    825
    Gender:
    Male
    Swapping the oil out to energy conserving next week. I'll check to see if it's milky. The coolant looked a little milky when I popped off the radiator cap...but that could just be me and it's hard to tell from just that little bit.
     
  8. May 24, 2013 at 2:06 PM
    #8
    iJDub

    iJDub [OP] Well-Known Member

    Joined:
    Dec 26, 2010
    Member:
    #48225
    Messages:
    825
    Gender:
    Male
    Would a pressure test determine if there is a leak even if its pin size.
     
  9. May 24, 2013 at 2:08 PM
    #9
    bowzerdoo77

    bowzerdoo77 U.S.M.C.

    Joined:
    Jan 5, 2007
    Member:
    #658
    Messages:
    512
    Gender:
    Male
    Twentynine Palms CA
    Vehicle:
    2006 DBL CAB 4x4TRD OFF ROAD
    6 inch pro comp lift, Nerf Bars Pro Comp Skid Plates.
    from what I understood the overflow is just that over flow only, I thought there was no way vaccum could be created to pull it back in to the radiator? am I wrong?
     
  10. May 24, 2013 at 2:13 PM
    #10
    Agent Smith

    Agent Smith Always outnumbered, never outgunned

    Joined:
    Oct 4, 2010
    Member:
    #44197
    Messages:
    1,032
    Gender:
    Male
    Vehicle:
    05 TRD Offroad Ivan Stewart Edition
    Toytec lift,FJ Anthracite wheels wrapped in BFG A/T 265/75/16's,WAAG Brush Guard, IPF 868's,sleeved fog lights
    Am I correct in understanding you flushed the radiator? Have you noticed any gurgling noises while driving? Our heater hoses enter the truck right in front of the drivers position. So any gurgling would sound like it is coming from under the dash right in front if you. Have you noticed any sharp fluctuations in the temp gauge? Like one moment it's normal and the next it's really hot?

    Did you burp the system? Meaning did you run the truck (parked) until hot with the cap off and the inside heater on "hot" with the blower on full blast? Once it is hot, still with the above suggestions, increase RPM's slowly to force the water pump to send any air pockets through and purge them out the open cap. Keep adding coolant to the radiator until its brimful, if it burps out air, it will need more coolant to replace the air. Only after all the air is purged, then top off overflow tank to proper level.
     
    Last edited: May 24, 2013
  11. May 24, 2013 at 3:01 PM
    #11
    coma09

    coma09 Senior Member. Hey, what's That supposed to mean?

    Joined:
    Jun 22, 2009
    Member:
    #18751
    Messages:
    210
    Gender:
    Male
    BC Canada
    Vehicle:
    2013 taco access cab 4x4
    Putco led map light bulbs, bed mat, Xiang trifecta tonneau, blackout front emblem, paint tow hoop, led bed light strip, scan gauge II, debadge, buff paint, oem fog light kit, 1000w inverter, Viair 300P compressor, Contura V dash switches, chop last L bend from exhaust, remove charcoal air filter, extinguisher, mag light, Ss side steps, kayak rack, tailgate security, bed mat security
    Yep. Pressure test will determine a leak. Rad shops will generally do it for free.
    Clean your oil cap off good right now, so you can tell if any new foam builds up.
    You should be able to just pull the dipstick and look at the film on it to see if its nice and clear.
    Sometimes if the head gasket leaks .. Depending if the block side or coolant side you'll see oily film in the reservoir
    The one vehicle I had a leaky head gasket, the Coolant went down, the reservoir had oily film, the oil was milky, and the oil cap had lots of white gunk on it.
     
    Last edited: May 24, 2013
  12. May 24, 2013 at 10:28 PM
    #12
    BamaToy1997

    BamaToy1997 ASE Master Tech Vendor

    Joined:
    Jan 31, 2012
    Member:
    #71846
    Messages:
    9,486
    Gender:
    Male
    First Name:
    Bill
    Navarre, FL
    Vehicle:
    1997 Tacoma 4X4 AKA "Blue Beast"
    Multi-point tow hooks, new bored 2.7L engine, custom paint. 3 inch adjustable Fabtech front coils, 2.5 inch rear AAL. Front Aussie locker. LED bed lights. Full LED conversion interior and exterior. Relentless Fabrication front and rear bumpers. 4X4innovation sliders. BAMF bed rack. CVT rooftop tent.

    Lots of good advice given so far. As to your specific question, yes, vacuum can be generated of a sort. Whenever anything heats up, it expands. Coolant is no different. As it expands slightly, that fluid will push past the radiator cap, spilling into the overflow. As the engine cools, the coolant cools and contracts. This contraction will create a vacuum that will pull some fluid from the overflow back into the system.

    As for the excessive loss of coolant the OP is experiencing, I agree that a pressure test would be the best, and easiest method to look for a potential leak.
     
  13. May 25, 2013 at 12:03 PM
    #13
    koco

    koco Well-Known Member

    Joined:
    May 25, 2012
    Member:
    #79503
    Messages:
    239
    Gender:
    Male
    Bay Area Ca.
    Vehicle:
    '01 Taco
    Around $26,000 worth of unleaded in the fuel tank.
    If you look at the underside of the radiator cap, you will notice a big spring that holds a rubber seal. When the pressure is enough, the spring allows the coolant to go through the hole in the side of the radiator neck that leads to the reservoir.

    Then when coolant cools and contracts, the only place it should pull from is the reservoir. But, if there is a hole somewhere else it will pull in air, and the level in your radiator will be well below the cap even if the reservoir has coolant in it.

    Sometimes the crimps along the top of the radiator leak very slightly and ruin the pressure in the cooling system. It can be hard to see.
     
  14. May 25, 2013 at 12:07 PM
    #14
    iJDub

    iJDub [OP] Well-Known Member

    Joined:
    Dec 26, 2010
    Member:
    #48225
    Messages:
    825
    Gender:
    Male
    So not 100% clear yet but now the coolant stopped dropping. Either I was so bad at filling the coolant and got lots of air in the system. Or my Taco knew I was on this board and about to do some major surgery on it and decided to stop acting up.
     
  15. May 25, 2013 at 12:21 PM
    #15
    kirkofwimbo

    kirkofwimbo Say no to Bro

    Joined:
    Jul 17, 2010
    Member:
    #40338
    Messages:
    1,770
    Gender:
    Male
    First Name:
    Clayton
    Wimberley, TX
    Vehicle:
    '07 DCSB SR5 4x4
    It's got LSD man.....
    I just had to have my radiator fixed and refilled and experienced the same thing. Must not be able to fill itself all the way up just through the regular cap, and has to draw some out of the reservoir.
     
  16. May 25, 2013 at 12:36 PM
    #16
    koco

    koco Well-Known Member

    Joined:
    May 25, 2012
    Member:
    #79503
    Messages:
    239
    Gender:
    Male
    Bay Area Ca.
    Vehicle:
    '01 Taco
    Around $26,000 worth of unleaded in the fuel tank.
    Yeah, I think it takes time to fill up all the little voids in the system. Don't forget to run the heater when flushing and filling too.
     
  17. May 25, 2013 at 1:45 PM
    #17
    iJDub

    iJDub [OP] Well-Known Member

    Joined:
    Dec 26, 2010
    Member:
    #48225
    Messages:
    825
    Gender:
    Male
    I think mine is a combo of draining coolant from all 3 plugs and not letting it burp air long enough. Was in a rush to get off the rack and to a hot date lol.
     
  18. May 25, 2013 at 1:53 PM
    #18
    DriverSound

    DriverSound Señor Member

    Joined:
    Mar 29, 2009
    Member:
    #15329
    Messages:
    2,601
    Gender:
    Male
    SoCal
    Vehicle:
    15 TRD-OR DCSB
    Just enough! Other vehicles: 2015 Mustang GTPP 2014 Prius 2010 4runner SR5 4x4 2009 TRD-OR AC
    Would still do a pressure check just to be on the safe side. Mine came back good on a pressure check but seeping coolant very slowly on the outside. This was on a 3.4. Engine info on yours would be nice.
     
  19. May 25, 2013 at 2:00 PM
    #19
    Got2ryde

    Got2ryde Well-Known Member

    Joined:
    May 1, 2012
    Member:
    #77982
    Messages:
    557
    Gender:
    Male
    First Name:
    Ryder
    Maryland
    Vehicle:
    AC OR 6spd silverstreak
    Off Road tow pac. GTCovers wetskinz seat covers, Direct wired Escort 9500xi, Leer 180 w/ARB awning, bed mat, extra d-rings, rear dif breather relocated, Weathertec mats, Elite front with Warn M8000-s and Rigid D2's, BAMF sliders, ABS killswitch, Kicker Hideaway sub, UltraGauge, ATO rear with flush mount duallys, FJ Trail Team black rims w/Duratracs.
    Did you check what the factory says to put in volume wise and then keep track of how much you put in?
     
  20. May 25, 2013 at 3:16 PM
    #20
    iJDub

    iJDub [OP] Well-Known Member

    Joined:
    Dec 26, 2010
    Member:
    #48225
    Messages:
    825
    Gender:
    Male
    Lol you recommended a pressure test yet admitted your pressure test was a wrong. I know what you meant but sounded funny.

    I have the 4.0L

    I only added 2 gallons total (1.9) I initially. I think factory capacity is like 2.5 gallons but that's if you were able to drain every last bit.
     
To Top