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Discussion Starter · #1 ·
Hello!

After a long time without posting I'm here again cause I think my engine is going to break.

Yesterday the engine started to do a very strange sound (youtube link) and I don't know where is coming from that sound. I think is inside the engine.

I'm very worried, do you know what could be?

Thank you everyone for your help!

 

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Can you provide more information like how many miles you have and if there have been any other problems?

It sounds kind of like a timing chain rattling. Is it RPM specific? Does it go away at higher revs ?
 

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doesn't sound like a typical rod knocking so I too believe it's the timing chain. how long has it been doing it? have you had a recent waterpump change? if not the timing chain, the only other moving part that would grind like that could be the turbo bearing but Id think you would have severe boost loss and get a code. any check engine codes? back to the timing chain, my tensioner on one of my dirt bikes fell off and the chain was slapping on the swingarm and grinding on the case and it sounded very similar to your car.
 

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It almost makes me wonder if the oil pump is not strong enough and isn't building up enough pressure, causing the timing chain to have slack in it. I am not sure if it's good to drive or not because if it jumps time, it could bend valves and stuff right?
 

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Noise

Could be either the timing or water pump drive chain.:willy:
 

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Intermittent Metallic Clicking/Grating Noise -- Vicitiny of Turbo

I had a very similar noise. I took it to a dealer and they said its probably the timing chain. I took it in for service today and they are popping off the front of the engine to have a look, so I'll know more in the next few days.

Its funny that the guys on this forum jumped immediately to the conclusion that it took a week for the KP guys to arrive at. ;) I should have posted it here!
 

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I'll take that complement Nathan. I've been a DIYer since I was 15 and have rebuilt close to a hundred engines in my time. I have also repaired and diagnosed as many cars. Surprisingly though, I cannot get the pull start on my nitro RC truck to work. fixin to shoot it and buy something else.

Hey Carlos,

if you have a short broom stick, plunger stick or long screw driver, you can start the car and put one end of the stick firmly against your ear and the other on various places on the engine and that will give you a real good idea of where the noise is coming from. On my last V8 rebuild, my timing chain cover got bent out of shape and the timing chain was hitting the cover. I used the stick method find the exact spot and was able to fix it without tearing the engine apart. No, you may not be as lucky but it will give you a better understanding of what's NOT making the noise. good luck.
 

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The timing tensioner failed... pretty sure of it... defintely do th screwdriver trick! It is truely a life saver!
 

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Discussion Starter · #9 ·
Heyy guys!

Thank you very much for your fast answers.until Monday I can't spend time on the car but I will write here with news.

Just for your information the last two weeks I had p0014 error: exhaust camshaft posits timing over advance or system perfect bank 1.

I thought it was the cam actuators solenoid so I bought the last week but I'm still waiting for them. Changing the solenoids will be solved or I will have to open the cover?

Thanks everyone, this forum is awesome!

Carlos
 

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most likely a new cam solenoid will cure the code but I doubt it's gonna fix that grinding noise. however, if the timing chain was that loose, you'd figure you'd have more codes than that and it would seriously backfire at deceleration. keep us posted and I'd be very careful until you get it fixed.
 

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most likely a new cam solenoid will cure the code but I doubt it's gonna fix that grinding noise. however, if the timing chain was that loose, you'd figure you'd have more codes than that and it would seriously backfire at deceleration. keep us posted and I'd be very careful until you get it fixed.
My timing chain was making that noise and it wasn't giving any codes at all. The ECM seems to have a remarkable ability to compensate for timing problems and keep things from going catastrophically wrong.

I did notice some blurbles when decelerating but I really think they were normal. Only once did a couple cylinders misfire (and it was back to back), which is what clued me in that the rattle was something important. However, the misfire occurred when idling while the car was warming up.

The only other symptoms I had (besides that noise) is that a couple times I started the car only to have it immediately die; and I also felt that the car had lost a bit of power since I bought it, but I couldn't justify that with any data, just a seat-of-the-pants feeling.
 

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Heyy guys!

Thank you very much for your fast answers.until Monday I can't spend time on the car but I will write here with news.

Just for your information the last two weeks I had p0014 error: exhaust camshaft posits timing over advance or system perfect bank 1.

I thought it was the cam actuators solenoid so I bought the last week but I'm still waiting for them. Changing the solenoids will be solved or I will have to open the cover?

Thanks everyone, this forum is awesome!

Carlos
replacing the cam actuators CAN solve the p0014 code, but as others have said it will not solve the chain rattle noise... IMHO pull the timing tensioner out (it's a HUGE bolt like 1.25in), ensure that it is functioning examine the chain guides, examine the chain for unusual marks, then reset the chain position.
 

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Im guessing this is a common issue? around what mileage are these chains failing? interested to see what the exact issue for this noise is.
 

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glad you found problem, though I do not know what you are pointing to.


I'll take that complement Nathan. I've been a DIYer since I was 15 and have rebuilt close to a hundred engines in my time. I have also repaired and diagnosed as many cars. Surprisingly though, I cannot get the pull start on my nitro RC truck to work. fixin to shoot it and buy something else.
TX-get the roto-start...easier to use a power tool than a pull start...I gave up on the pull starters....box starter for nitro car.
 
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