strange knocking in the engine - Toyota Will VS, 1.8 liter, 2001
it all started unexpectedly about 1.5 years ago! there was a knock of the valves during the transition from working to idle, then just at idle, after 2000 and when the engine was started. Colossal work has been done to replace the chain and all the accessories for it, new lift bolts were screwed in, valve clearances were adjusted, the injector was washed, but all this did not work. Using the method of scientific poke, it was found that when the valve of the vvt-i system is turned off, the sound disappears somewhere. search volume has been reduced. after talking with his father and another Kulibin, he was diagnosed with “the end of the vvt-i gear has come†by removing the valve cover, seeing the engine from the inside again, reluctantly removing the intake camshaft and replacing the gear (there is one but it needs to be cocked, i.e. put on the camshaft and scroll to the silk,) collecting everything back. Was greatly surprised the sound is gone! I apologize that there are no pictures, my hands are in oil, and I have not yet learned how to shoot with my feet. For those who are interested, I can write in detail ...
Issue price: 5,000 ₽ Mileage: 147,000 km
Under the cam there is a rocker with two pushers - for two valves, and an adjusting washer is put on top of the valve. She looks like a glass. It is the thickness of the bottom of this "glass" that regulates the clearance in the valve drive. More precisely, the choice of thickness. In other words, they should be replaced as they wear out. They are available in different thicknesses.
Removed measured the gap and changed the valve stem seals. Didn't find any pucks. They look like an inverted glass and inside in the middle there is a protrusion with a diameter approximately like a valve.
Hey! I have the same thing happening with the engine at the moment, it works like a diesel, but for now I’m sinning on hydraulic lifters and now I’m waiting for them to come, I’ll be very disappointed if it all turns out to be VVT-I ((
Hello… there was a similar problem with a run of 155 thousand… It starts up like an oil starvation at the engine… also when driving at a speed of 1000 to 1800 somewhere.
Can you explain in more detail where to dig and what to buy, I mean the VVT-I gear.
Thanks in advance, I'll be waiting for an answer.
Hello. Urgently! I have a problem with the engine. Knocking in the head. Motor 2zz. Burned check. The computer gave out the critical position of the circuit. Eliminated. Replaceable chain with shoe, tensioner and damper. The knock remained the same. The check is off. They say that one of two things remains: either a camshaft or a bushing with an asterisk. Anyone had a similar problem. Write. There is no more hope. The service station refused to talk about replacing the head. I'm under the impression.
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Everything turned out to be simple. Burnt connecting rod bearings. Due to the fact that there was a development on the crankshaft, I had to sell
Hello, please tell me more about the break! I have the same story, I thought I changed the chain and it remains, when you stop at a traffic light, a breakdown from the side of the chain, as if on the valve cover, both companies fall again, a breakdown and a nasty vibration! Tell me please!)