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
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.
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