Loud ticking noise from engine

Synack · 02-27-2012, 10:43 AM

Quote:

Originally Posted by DIGItonium

All of this happened without warning? Like gradually increased noise? I think it's bad luck or accidental overrev that would cause the noise to appear suddenly (i.e., something decided to give up out of the blue).

How does your engine idle? Did it increase or become inconsistent? If you get leaks or droplets, I'm pretty sure you'd smell something by now.

That noise is definitely scary. I realized the sound in the video I made were just ticking injectors. Phew! Yours is definitely different.

There were no prewarnings. No noises. Hell I even dynoed the car a couple weeks ago and it registered perfectly acceptable numbers. It could be a high rev that triggered it. I don't drive the car like a grandma and I certainly don't drive it like a pissed off teenager.

sfearl1 · 02-27-2012, 10:51 AM

this thread made me check my oil like 5x over the weekend. heck, i even checked it before heading into the office today!

Synack · 02-27-2012, 10:55 AM

Quote:

Originally Posted by sfearl1

this thread made me check my oil like 5x over the weekend. heck, i even checked it before heading into the office today!

Man I hear you. From now on forever I will check my oil a least a couple times a month, if not once a week, on every car I own from here out.

specblue02 · 02-27-2012, 11:23 AM

No check engine light, low oil or anything. I checked the oil temp on my drive home Thursday night and it was at normal range, engine temp was normal as well. I drive mine like a grandma since I'm commuting so far each day and even more so when I have snow rims/tires on which I have currently...some of the easiest 46k miles a car could possibly see

specblue02 · 02-27-2012, 12:02 PM

Need an answer quick guys if you can

Dealer said 2 MAF have issues; 1 is no signal, the other is very learn.

1375.00 for replacement

What is our emissions coverage for warranty?

THey are also going to put me on a consumption test as well

Synack · 02-27-2012, 12:11 PM

Quote:

Originally Posted by specblue02

Need an answer quick guys if you can

Dealer said 2 MAF have issues; 1 is no signal, the other is very learn.

1375.00 for replacement

What is our emissions coverage for warranty?

THey are also going to put me on a consumption test as well

Sorry if this doesn't assist at all, but:

1. MAF sensors are NOT even close to that expensive
2. MAF sensors should not be your fault and should be covered by warranty
- its not your fault your MAF sensors failed.

Synack · 02-27-2012, 12:33 PM

Quote:

Originally Posted by specblue02

I'm outside the 3 yr/36k miles on that part so it's no longer covered. He double checked and I found it as well on the nissan warranty information. Sucks that it's not covered but it is better than having to get a new engine. They're going to change the oil and put the tape on it for the oil consumption test so I'll be back within 2 weeks to have it checked.

$1375 is steep especially since it's right there and easy to access but it's cheaper than me having to trade it in to get a new car...but I have another 1k+ expense is tires coming up now too...

As my grandpa always says...it's always something

I found OEM MSRP pricing for a MAFS is 561...I can't imagine them spending that much per but if I were to buy myself I could get it like $450 so I guess it isn't absurd but still...it's a piece of plastic it looks like..

It's the sensor that reads air in your intakes. So they think your problem is going to be solved with a MAF replacement? I'm slightly under the impression that if your engine is clanking and knocking like mine then that is definitely not a fix for it. But you have a different situation than I do, you have oil. I had none whatsoever.

specblue02 · 02-27-2012, 12:43 PM

Yea, they said the check engine light was on (which it wasn't when I had it at home) so they were going to get that to go away and replace the senors. Hopefully that is the cure and no additional engine damage was caused. I'll be back within 2 weeks so if I have any issues I'll be sure to let them know. Mine didn't sound quite like yours...it probably sounded worse than it actually was though...kind of relieved now that it's not the block

Synack · 02-27-2012, 12:46 PM

Quote:

Originally Posted by specblue02

Yea, they said the check engine light was on (which it wasn't when I had it at home) so they were going to get that to go away and replace the senors. Hopefully that is the cure and no additional engine damage was caused. I'll be back within 2 weeks so if I have any issues I'll be sure to let them know. Mine didn't sound quite like yours...it probably sounded worse than it actually was though...kind of relieved now that it's not the block

Yeah but what I'm confused about is:

Ok so they replace the shortblock, is that the ONLY thing that needs replacing? It sounds everyone else noticed that their engine was eating oil BEFORE they ran out and started breaking stuff internally. I could be wrong but this is the impression that I'm getting. I believe that I'll have more than just the short block replaced. Though I would much rather that be the only thing that is messed up. And how long is this process supposed to take? I want my damn car back!

specblue02 · 02-27-2012, 12:50 PM

Well, if all mine is just the 2 MAFS and my oil changed and cap taped I should have it back today. I'm at work so my dad will go to pick it up for me...after 2 weeks if all is good w/ the oil level and no issues I'll order up my new tires for the Rays...not before then though

DIGItonium · 02-27-2012, 12:51 PM

Before the oil change and discovering the shortage, there was noise? Then you changed the oil and noticed unusually high temps plus noise?

So before all of that, did you notice unusually high oil temps as well prior to refilling oil?

I'm thinking something decided to give up, and it's probably just bad luck

Can't wait to see them dissect the motor, though. If the block is still good you can probably salvage it.

Synack · 02-27-2012, 12:56 PM

Quote:

Originally Posted by DIGItonium

Before the oil change and discovering the shortage, there was noise? Then you changed the oil and noticed unusually high temps plus noise?

So before all of that, did you notice unusually high oil temps as well prior to refilling oil?

I'm thinking something decided to give up, and it's probably just bad luck

Can't wait to see them dissect the motor, though. If the block is still good you can probably salvage it.

Before the oil addition and discovering the shortage, there was the knocking and high oil temps. After 5 quarts of oil, there was still knocking, but I did not run the car long enough to examine anything because everyone on here was telling me to keep it off and have it towed, which I did. I'm willing to bet it would've ran lower though because there was actually oil in it. I'm wearing my lucky items just to make sure I'm going to be in luck when it comes to warranty.

Synack · 02-27-2012, 01:27 PM

Just checked the TSB and saw this:

APPLIED VEHICLES: 2009-2010 370Z (Z34)
APPLIED ENGINE: VQ37VHR
ONLY APPLIED VIN / DATE:
Vehicles built before: JN1AZ4FH(*)AM303670 / 05-Apr-2010
Vehicles built before: JN1AZ4EH(*)AM503778 / 05-Apr-2010
IF YOU CONFIRM
Engine oil level is low.
OR
There is unusual engine noise.

____________________________________

I see that the letters E and F are in bold. My VIN number also has MATCHING letters and numbers like the above VIN's mentioned, except for the last 6 numbers.

JN1AZ4EH

______________

Also just noticed that they replaced the Short Engine, which those suckers are sold for minimum $4000. Yikes! Part no. 10103-JL3MA

Synack · 02-27-2012, 02:44 PM

ALRIGHT ---------- HERE'S THE RUNDOWN

They have to basically take the motor apart. They said if there is any damage to the top block then the whole engine gets replaced. Even the slightest bit. If there is no damage to the top block then the short block gets replaced and I have to basically break in the motor like it was brand new. All covered under warranty no matter what. They said everything was clean and fine on my end and it was not my fault, which is true

So I'm hoping it's just the short block so it can be a relatively short process and I DO NOT have to deal with a diminished value of the car because of a new motor.

Told you guys Baker is great!

wstar · 02-27-2012, 02:49 PM

Well it's in their hands, but tbh if I had any sway and it were my car, I'd be gunning for the full engine replacement.

They're going to have to pull and re-install the whole engine either way, so any risks from that are common to both solutions (e.g. errors in the installation process). The VIN on the lower engine block is going to change either way, if it's the matching VINs you're worried about value-wise.

I'd rather have a whole new engine in that case than have them slap in a new shortblock + existing heads. You get newer everything for free, and less chance of some unseen fallout affecting the heads' longevity. How well do you trust that their mechanics would notice (or even be *able* to notice) some subtle problem that developed in the heads from running oil-free?

02-27-2012, 10:51 AM	#2 (permalink)
sfearl1 A True Z Fanatic Join Date: Oct 2011 Location: St. Louis Posts: 2,300 Drives: 2013 FBO E85 GTR Rep Power: 18	this thread made me check my oil like 5x over the weekend. heck, i even checked it before heading into the office today! __________________ Scott

02-27-2012, 12:51 PM	#11 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 43	Before the oil change and discovering the shortage, there was noise? Then you changed the oil and noticed unusually high temps plus noise? So before all of that, did you notice unusually high oil temps as well prior to refilling oil? I'm thinking something decided to give up, and it's probably just bad luck Can't wait to see them dissect the motor, though. If the block is still good you can probably salvage it. __________________

02-27-2012, 01:27 PM	#13 (permalink)
Synack A True Z Fanatic Join Date: Apr 2011 Location: Houston Age: 37 Posts: 1,012 Drives: Sideways Rep Power: 17	Just checked the TSB and saw this: APPLIED VEHICLES: 2009-2010 370Z (Z34) APPLIED ENGINE: VQ37VHR ONLY APPLIED VIN / DATE: Vehicles built before: JN1AZ4FH()AM303670 / 05-Apr-2010 Vehicles built before: JN1AZ4EH()AM503778 / 05-Apr-2010 IF YOU CONFIRM Engine oil level is low. OR There is unusual engine noise. ____________________________________ I see that the letters E and F are in bold. My VIN number also has MATCHING letters and numbers like the above VIN's mentioned, except for the last 6 numbers. JN1AZ4EH ______________ Also just noticed that they replaced the Short Engine, which those suckers are sold for minimum $4000. Yikes! Part no. 10103-JL3MA __________________ NO LONGER OWNS A 370 Turbo FR-S Last edited by Synack; 02-27-2012 at 01:37 PM.

02-27-2012, 02:44 PM	#14 (permalink)
Synack A True Z Fanatic Join Date: Apr 2011 Location: Houston Age: 37 Posts: 1,012 Drives: Sideways Rep Power: 17	ALRIGHT ---------- HERE'S THE RUNDOWN They have to basically take the motor apart. They said if there is any damage to the top block then the whole engine gets replaced. Even the slightest bit. If there is no damage to the top block then the short block gets replaced and I have to basically break in the motor like it was brand new. All covered under warranty no matter what. They said everything was clean and fine on my end and it was not my fault, which is true So I'm hoping it's just the short block so it can be a relatively short process and I DO NOT have to deal with a diminished value of the car because of a new motor. Told you guys Baker is great! __________________ NO LONGER OWNS A 370 Turbo FR-S

02-27-2012, 02:49 PM	#15 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3595	Well it's in their hands, but tbh if I had any sway and it were my car, I'd be gunning for the full engine replacement. They're going to have to pull and re-install the whole engine either way, so any risks from that are common to both solutions (e.g. errors in the installation process). The VIN on the lower engine block is going to change either way, if it's the matching VINs you're worried about value-wise. I'd rather have a whole new engine in that case than have them slap in a new shortblock + existing heads. You get newer everything for free, and less chance of some unseen fallout affecting the heads' longevity. How well do you trust that their mechanics would notice (or even be able to notice) some subtle problem that developed in the heads from running oil-free? __________________ 7AT Track Car! Journal thread / Car setup details

02-27-2012, 11:23 AM	#4 (permalink)
specblue02 Base Member Join Date: Feb 2010 Location: NJ Posts: 32 Drives: 2010 370Z Rep Power: 16	No check engine light, low oil or anything. I checked the oil temp on my drive home Thursday night and it was at normal range, engine temp was normal as well. I drive mine like a grandma since I'm commuting so far each day and even more so when I have snow rims/tires on which I have currently...some of the easiest 46k miles a car could possibly see

02-27-2012, 12:02 PM	#5 (permalink)
specblue02 Base Member Join Date: Feb 2010 Location: NJ Posts: 32 Drives: 2010 370Z Rep Power: 16	Need an answer quick guys if you can Dealer said 2 MAF have issues; 1 is no signal, the other is very learn. 1375.00 for replacement What is our emissions coverage for warranty? THey are also going to put me on a consumption test as well

02-27-2012, 12:43 PM	#8 (permalink)
specblue02 Base Member Join Date: Feb 2010 Location: NJ Posts: 32 Drives: 2010 370Z Rep Power: 16	Yea, they said the check engine light was on (which it wasn't when I had it at home) so they were going to get that to go away and replace the senors. Hopefully that is the cure and no additional engine damage was caused. I'll be back within 2 weeks so if I have any issues I'll be sure to let them know. Mine didn't sound quite like yours...it probably sounded worse than it actually was though...kind of relieved now that it's not the block

02-27-2012, 12:50 PM	#10 (permalink)
specblue02 Base Member Join Date: Feb 2010 Location: NJ Posts: 32 Drives: 2010 370Z Rep Power: 16	Well, if all mine is just the 2 MAFS and my oil changed and cap taped I should have it back today. I'm at work so my dad will go to pick it up for me...after 2 weeks if all is good w/ the oil level and no issues I'll order up my new tires for the Rays...not before then though

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