The spindle grille has been an unmistakeable Lexus feature since it was first revealed on the LF-Gh concept model of 2011, the basis for the fourth generation GS executive saloon that was launched the following year. In tune with a new era of electrified vehicles, the distinctive shape is evolving into a new “spindle body,” as seen on the upcoming new generation Lexus RX SUV and the all-electric RZ. IMO tear it down and do the whole thing every engine in the 3rd gen GS lineup has hydraulic valve clearance adjusters.Īfter 10 years as a defining style feature of every new Lexus model, the famous spindle grille is undergoing a transformation. If it is, it won't be easy and/or cheap, but. eating water/coolant), check the old plugs for any indication of running lean/burning coolant/etc, check the system with a "block tester" (an "exhaust in the cooling system" test). Re: potential head gasket failure - check the cooling system for leaks (pressurize via a special cap & check whether it holds pressure, check where it leaks if it does - could be a cylinder), check the cylinders with a good borescope (clean usually means "vapour cleaning" i.e.
Re: random warm air - get the t-stat open, put heater on HIGH, rev the engine for awhile in D-mode (easiest way to maintain ~2500-3000rpm), see if that helps. I also probably just stirred up a hornet's nest. I wouldn't run 0w20 in an engine that was originally specified for 5w30. This leads to higher exhaust gas temperatures and quicker catalytic converter lightoff. It makes a lean mixture with the port injectors and makes a "rich" pocket with the direct injectors in order to ignite it. The engine is also direct-injected, and it DOES run in "stratified combustion" mode while warming up the catalytic converters - i.e. VVT-i hydraulic variable valve timing actuators not locking up when stopping and/or not holding oil at startup, or at least that's the first thing that comes to mind, given what it sounds like. Happy to undertake head gasket replacements but if there is damage to the head/block then its game over. Any thoughts on potential causes/things to check would be appreciated. I’ve not been able to conduct a compression test yet, but was also curious as to whether this would be safe on a hybrid set up (didn’t want to inadvertently make things worse). One has mentioned the direct injection seals, another the EGR- but I don’t know the hybrid set up well enough to know if it even has an EGR. I have read various things about other Lexus hybrids. The misfire (if that is what’s causing the juddering) could be as a result of the same suspicions, but no obvious water in the oil, or visa versa. The exhaust has white clouds when running - i won’t say steam or smoke as I don’t know which it is, and has a scent to it. The coolant bottle was bubbling with air coming it to it (positive pressure - not heat) yesterday when I ran it for a brief period. I am concerned head gaskets/heads/block are potentially the cause. We are finding that occasionally the car doesn’t have warm air to come through but it appears to be random. Suspected it may have failed again, I tested it and it wasn’t opening until it reached around 97 degrees, so replaced that too. I’ve replaced the thermostat when we did the w.pump the first time. Video attached hopefully.Īs an aside to this, we appear to still have coolant issues. Just gone to get a video and it wouldn’t start on first attempt, but on second it did. We also did an oil change and put 0W20 in & changed the oil feed banjo bolt filters, thinking this would also help keep the engine well lubricated. Suspecting the coil packs, and knowing the plugs were slightly overdue anyway, we replaced those yesterday.
Ran world gs code#
I had a go at interrogating it with an Autel machine (don’t have a TechStream) and it seemed to generate the P3000 code (misfire?). There is quite a radical shudder on start up. Once it gets warmed up a little it starts to improve and sounds more ‘normal’. On cold start up it has a nasty ‘clatter’. Found a fault pipe, resolved that, and it was fine again.Ī few weeks later OH comes back from work with yet more coolant issues and also reports an engine judder on start up. However when driving it steam started to appear. Fitted an OEM pump and gasket and all seemed good for a few months. I seem to be having a collection of issues and wondered if I could call on the knowledge in the forum please?Īround December it started leaking coolant, a look around found the water pump we replaced a just over 2 yrs prior was failing as the gasket (also replaced the stat), which wasn’t OEM, appeared to had turned to mush. I have a 2007 GS450h mileage around 122k.
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