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Hi, my name is***** your mechanic automotive expert, and I will be happy to assist you today. In some cases, I may need more information to assist better. I apologize for any delay.
I try to be here most weekdays and some weekends. If you respond and I do not respond back right away I will do so as soon as I can.
Dear customer, could you please tell me the mielage of your car also do you have any lost of power while driving? Thank you.
Dear customer, I understand your problem. The first thing that I think it would be useful to inform you is that the engines and the cylinder heads of your model Grand Voyager Xeon have a very delicate aluminum alloy, what happens is that aluminum does not withstand high temperatures so any overheating can cause damage to it, more in the cylinder heads .The first thing I noticed and that I should recommend you is to do a coolant leakage check, there are tools like pumps which are installed in the cooling system either by the radiator or the collector, and air is applied in the system to increase the pressure then it’s observed if this pressure decreases, if so we are in the presence of a leak which we can locate visually.The problem its dear customer that the leaks cause overheating, there are other aspects that should be rule out, for example the radiator cap must have the proper pressure these caps are designed to withstand certain pressures, when these cover wear they cause leakage of coolant through steam.Problems in the coolant pump also cause coolant circulation problems, which causes an increase in the temperature.These aspects are those that we must discard first, now I am concerned is that it if you observe a damage in the engine and is reflected in the ignition, indeed the cylinder head could have been damaged or it could have some defect. These vibrations are already flaws in the ignition and may be symptoms of these defects or damage, but not necessarily must be so, many times It is simply the cylinder head that suffers the defects and the only thing we have to do is to carry a stock check to see if it was rippled or bent, then go through a process of brushing to be able to get the stock again and a new packaging is installed, with this is more likely that your problem will disappear in case it is a problem in the cylinder heads .Dear customer, I would also like to know if you have white smoke in the exhaust to determine if the vehicle is consuming coolant or water?
Hello Mr Austin, mi apologies for the long delay and my best wishes for the new year. Now about your car, perform an oil replacement and verify the old oil does not smell burnt.
Replace all the coolant and check if there is any the leaks as recommended to verify that there is no problem.
Check the compression on all the cylinders to verify that you have none with a failure, all the cylinder should have the same compression.
Remove the valve cover and verify on the top that the valves are correct, that it does not smell burned and it does not have any rocker or defective bolt.
If everything is correct Dear customer, I am worried that you will have to check the cylinder head and to do this you have to disassemble the engine unfortunately.
Have you understood my recommendation, Mr Austin?