Bubbles in radiator even after top overhaul..gurus help!

[miked]

will retorque solve may pressure-build and bubbling issue?

no white smoke naman at no oil contamination as i've observed...

masalimuot talaga ang troubleshooting....its like "shoot now, ask later"

it may solve the pressure buildup/bubbling....try retorque after 500 - 1,000 km.

if it will not solve the issue, baka matindi na warpage ng head or block or both at hindi na siguro chineck ng mekaniko...baka deretsahang replacement of part na lang ginawa without checking warpage....or worst case scenario, cracked ang head. wag naman sana.

just finished the disassembly, part cleaning and inspection....i used a straightedge and feeler gage to check warpage...salamat sa diyos at mas mababa ang nakita ko na warp kesa sa standard value...

[desert fox]

me crack ang cylinder head....

[mikoyreales]

update re this:

i opt to find another mech and again we opened the ch. ayun, nasira ung ch gasket na nilagay ng bobong mech.in my observation, replacement ang inilagay n gasket (npakanipis compared sa orig na bukod sa makapal e mbigat din).anak ng tokwa! perhaps i trusted him too quickly since he's a referral. anyway, again i bought an orig toyota ch gasket and AGAIN reassembled the parts.i'm glad wlang tama ung c.head.nung pinaandar, saw some bubbles pero mlmang trapped bubbles lng then after awhile wla na, pure flow nlng ang nkikita ko sa rad.i'll test drive this coming weekend since very busy ako sa work.

tnx sa mga advices tsikot members!

[desert fox]

o di kaya yung fan motor nya kailangan na papalitan.

nasabi na pala ni brotrekker13...

sorry...

+1 na lang ako....

[desert fox]

o di kaya sa silicone gasket na ginamit ng mekaniko...di lahat ng silicone gasket pwede sa Cylinder head....

nakupo baka backjob ito...

[miked]

Mine had bubbling and pressure build-up when cold issues....

kapapalit ko lang ng HG the other day on my 4D56B turbo engine with the federal mogul brand.

so far it runs fine as of today. no bubbling and pressure build up when cold...

i followed the instructions provided by mechanics here in tsikot plus the instructions on the manual plus advice/tips from my mechanics-friends.

i torqued to 3 stages (4-8-12 kgm) with 10 minutes settling time between the 2nd and 3rd stages....ang hirap pala magbasa ng manual torque wrench while torquing the bolts lalo na sa 3rd stage...how i wish na may automatic torque wrench ako na ginamit..napakamahal kasi nun

di na rin ako naglagay ng shellac sa HG...just the gasket alone.

once kasi na nagoverheat ang aluminum cylinder heads eh hindi na yan titino unlike cast iron heads...aluminums loose their original strengths drastically after 1 overheating only

[JayL]

Bro the fact that you are having some problems makes me think that the job might not have been done properly. Maybe it's better to get a second opinion now from a shop with the proper test equipment to diagnose a problem or certify that the engine is ok.

Last week we just did a valve job for a 1999 CRV that suffered a broken timing belt. In the process the Cylinder Head gasket was replaced too. No shellac or nothing to be placed , just the OEM gasket itself. None the less one has to have the proper torque data, steps and sequences to properly install the CH.
In this particular engine we cannot afford to do a re torque because we need to dismantle the timing belt and cams again in order to access the cylinder head bolts. It should be done right the first time or we're in trouble.







It's very important to get this part right for any engine or else the symptoms you mention can start popping out. I hope the bubbles in your radiator are just trapped air. If it's combustion gas then something is definitely wrong and the overheating you mention does not make me comfortable.

This is a tool that can used to verify if the escaping gas is indeed combustion gas.

[ame="http://www.amazon.com/gp/product/B000NPDL76/ref=ord_cart_shr?ie=UTF8&m=ATVPDKIKX0DER"]Amazon.com: UVIEW 560000 Combustion Leak Tester: Automotive[/ame]

[izzy06]

100% back job yan sir dahil ganyan na ganyan ang nangyari sa vtec ko, ang kaibahan lang ang mekaniko ko alam niya kaagad na di tinamaan ng unang resurfaced sa cylinder head kaya binaba at inulit nya agad kaya nung pangalawang beses ayos na ayos na. tama yung iba dito baka di tama ang materyales na ginamit

[ralphyboy11]

ano na balita dito??