01-19-2020, 12:25 PM
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#16
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The pitting looks like casting marks imo. The other two look blueish which would mean an issue with oil burning, as is indicated by blue exhaust. And if you didn't work out the air bubbles in the cooling system when you filled the tank, you would get some settling in the coolant level. Not to disagree with the mechanic, but I don't really see symptoms of head gasket failure nailed down at this point, but a whole lot of burning oil. And that is a very pricey repair. Now, a combustion chamber flooding with oil will definitely cause the engine to misfire.
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2007 SR5 V6 4WD 205k, Titanium Metallic. 5100s, OME 885/895, extended rear links, ST Maxx 255/75 R17 on 17x8s, mud flap delete,TB spacer, Spectre CAI, DRL delete, HCF delete, DAC delete, K&N cabin filter, TPMS bypass, Fog light mod, USB galore, dash cam, LED lights all over, rear bumper lights, cbi ditch light brackets w/lights, atrac off, OBA w/2 gallon tank/hidden hook up, Trailgear welded sliders, Rocksteady skids, custom swing-out, 3⁰, SE hood w/working vent, Sprint booster, JET MAF, Kenwood TM-V71a w/motorized antenna, custom dual battery, custom roof rack/lights, custom TRED mount, external 12v, rear diff breather, pck, Freedom UCAs, custom stereo, Aluminum rad, trans cooler, 240A alternator...for now...
Last edited by 81runner; 01-19-2020 at 12:29 PM.
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01-19-2020, 03:52 PM
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#17
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ok, it seems to be adding up now, as the mechanic says he would change the rings and grind/replace valves, change gaskets etc.
the big question i want answered however, is...would the shorter plugs installed and used for 2 weeks or more e responsile for this oil egress and malfunction?
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Last edited by earthrealm; 01-19-2020 at 03:59 PM.
Reason: more info
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01-19-2020, 04:52 PM
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#18
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Join Date: Mar 2018
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Quote:
Originally Posted by earthrealm
ok, it seems to be adding up now, as the mechanic says he would change the rings and grind/replace valves, change gaskets etc.
the big question i want answered however, is...would the shorter plugs installed and used for 2 weeks or more e responsile for this oil egress and malfunction?
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I would GUESS no, though it probably wouldn't help with the engine performance either. The tube gasket is above the head, the plug screws into the head, so I figure that wouldn't have anything to do with oil egress, but I'm just snowballing here. I would imagine it affects the spark timing because it's higher up in the combustion chamber, maybe even shorts to ground, could screw up valves.
Changing rings means he thinks oil is getting into the chamber from the lower portion of the engine, probably poor cylinder compression would be a result.
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2007 SR5 V6 4WD 205k, Titanium Metallic. 5100s, OME 885/895, extended rear links, ST Maxx 255/75 R17 on 17x8s, mud flap delete,TB spacer, Spectre CAI, DRL delete, HCF delete, DAC delete, K&N cabin filter, TPMS bypass, Fog light mod, USB galore, dash cam, LED lights all over, rear bumper lights, cbi ditch light brackets w/lights, atrac off, OBA w/2 gallon tank/hidden hook up, Trailgear welded sliders, Rocksteady skids, custom swing-out, 3⁰, SE hood w/working vent, Sprint booster, JET MAF, Kenwood TM-V71a w/motorized antenna, custom dual battery, custom roof rack/lights, custom TRED mount, external 12v, rear diff breather, pck, Freedom UCAs, custom stereo, Aluminum rad, trans cooler, 240A alternator...for now...
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01-19-2020, 05:25 PM
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#19
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Quote:
Originally Posted by 81runner
The pitting looks like casting marks imo. The other two look blueish which would mean an issue with oil burning, as is indicated by blue exhaust. And if you didn't work out the air bubbles in the cooling system when you filled the tank, you would get some settling in the coolant level. Not to disagree with the mechanic, but I don't really see symptoms of head gasket failure nailed down at this point, but a whole lot of burning oil. And that is a very pricey repair. Now, a combustion chamber flooding with oil will definitely cause the engine to misfire.
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I disagree that it doesn't have a blown head gasket, that one cylinder wouldn't be that clean if there wasn't something going on to make it look so pristine and clean as it is compared to the others.
Quote:
Originally Posted by earthrealm
ok, it seems to be adding up now, as the mechanic says he would change the rings and grind/replace valves, change gaskets etc.
the big question i want answered however, is...would the shorter plugs installed and used for 2 weeks or more e responsile for this oil egress and malfunction?
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If the rings were bad it would be blowing blue smoke all the time it's running and not just at startup, bad valve seals are almost always the responsible culprit for blowing blue smoke only at startup.
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01-19-2020, 06:50 PM
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#20
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Quote:
Originally Posted by 81runner
but I don't really see symptoms of head gasket failure nailed down at this point,
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That clean silver cylinder head is the classic sign of head gasket failure.
There's also significant oil infiltration the combustion chamber, and it is a problem unrelated to the head gasket. I think AU Seeker nailed down this one.
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01-19-2020, 07:47 PM
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#21
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[QUOTE=Seymore Butts;3427718]That clean silver cylinder head is the classic sign of head gasket failure.
It makes sense... coolant cleaning the area???
Honest question, is this an already stablished, well known sign of HG leak?
(I have a low mileage 2003 V6, so far so good)
Thanks
Carlos
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01-20-2020, 12:09 AM
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#22
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Quote:
Originally Posted by Seymore Butts
That clean silver cylinder head is the classic sign of head gasket failure.
There's also significant oil infiltration the combustion chamber, and it is a problem unrelated to the head gasket. I think AU Seeker nailed down this one.
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I learned something new today
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2007 SR5 V6 4WD 205k, Titanium Metallic. 5100s, OME 885/895, extended rear links, ST Maxx 255/75 R17 on 17x8s, mud flap delete,TB spacer, Spectre CAI, DRL delete, HCF delete, DAC delete, K&N cabin filter, TPMS bypass, Fog light mod, USB galore, dash cam, LED lights all over, rear bumper lights, cbi ditch light brackets w/lights, atrac off, OBA w/2 gallon tank/hidden hook up, Trailgear welded sliders, Rocksteady skids, custom swing-out, 3⁰, SE hood w/working vent, Sprint booster, JET MAF, Kenwood TM-V71a w/motorized antenna, custom dual battery, custom roof rack/lights, custom TRED mount, external 12v, rear diff breather, pck, Freedom UCAs, custom stereo, Aluminum rad, trans cooler, 240A alternator...for now...
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01-20-2020, 12:41 AM
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#23
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Carlos, the water content of the coolant fluid cleans off carbon deposits very effectively.
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01-20-2020, 01:42 AM
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#24
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Join Date: Mar 2018
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I believe it. Between the abrasiveness of coolant and the scalding hot liquid under pressure, I get it would be very effective at cleaning carbon off of a head
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2007 SR5 V6 4WD 205k, Titanium Metallic. 5100s, OME 885/895, extended rear links, ST Maxx 255/75 R17 on 17x8s, mud flap delete,TB spacer, Spectre CAI, DRL delete, HCF delete, DAC delete, K&N cabin filter, TPMS bypass, Fog light mod, USB galore, dash cam, LED lights all over, rear bumper lights, cbi ditch light brackets w/lights, atrac off, OBA w/2 gallon tank/hidden hook up, Trailgear welded sliders, Rocksteady skids, custom swing-out, 3⁰, SE hood w/working vent, Sprint booster, JET MAF, Kenwood TM-V71a w/motorized antenna, custom dual battery, custom roof rack/lights, custom TRED mount, external 12v, rear diff breather, pck, Freedom UCAs, custom stereo, Aluminum rad, trans cooler, 240A alternator...for now...
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01-20-2020, 02:59 PM
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#25
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Join Date: Aug 2019
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Real Name: Carlos V.
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Quote:
Originally Posted by Seymore Butts
Carlos, the water content of the coolant fluid cleans off carbon deposits very effectively.
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Thanks a lot Seymore B. Also learned something new.
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Gold 2003 4Runner SR5 V6 2WD A340E
Grabber A/T, Brembo rot, Akebono pads, Optima batt, HKB Volt. booster, Buffalo Bayou recovery
Sony XAV1000, LED interior and reverse, Weathertech, Flux-Turbocharged tire valve caps.
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