Valve Lifter Noise - Page 2 - Honda Pilot

rocky · 01-03-2013, 03:32 AM

does the OP have VCM?

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humanoid · 01-03-2013, 01:34 PM

Quote:

Originally Posted by rocky

does the OP have VCM?

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OP has an '07 so I'm guessing he does.

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tangotango99 · 01-03-2013, 01:40 PM

Quote:

Originally Posted by Yahooligan

You don't necessarily have to use a Honda filter, but cheap filters like Fram are notorious for their leak down and causing valve train noise on startup due to their poor quality anti drainback valves.

I would suggest having a good quality filter (Bosch, Honda, Mobil 1, Purolator) installed and see if the noise goes away.

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Honda filters are made by Fram

lexar940 · 01-03-2013, 07:21 PM

Knocking noise is pretty loud but goes away when it warms up, 3-4 minutes. I'll rev it up tomorrow and see if it disappears at higher RPM.
It's frustrating not knowing who can tell the difference between Valve lash adjustment and Timing belt, etc. I certainly don't want to replace the timing belt 20K too soon unless I know that's what it is.
Thanks. By the way, what is VCM?
Alexander

lexar940 · 01-03-2013, 07:23 PM

Yes, It has VCM

lexar940 · 01-07-2013, 04:05 PM

Engine starts the last 2 days quiet as a mouse. Today, deep knocking but goes away on warm up.
So... can it still be the tensioner?
Thanks

snoddy · 01-08-2013, 11:30 PM

I am having this exact same issue as you are all describing! '06 Pilot with a 86,000 miles.

I am going to change the timing belt tensioner, oil (back to 5W20 instead of the 5W30 I just used) and I'll try the sea foam.

As a side note, before I bought the car, the PO had the valve adjustment done because it was showing the cylinder misfire codes.

lexar940 · 01-09-2013, 07:59 PM

Does it make the noise every day and does it go away on warm up as my car does?
Please advise if changing the tensioner solves it
Thanks
Alexander

rocky · 01-09-2013, 09:04 PM

I'm just very suspicious of Honda's VCM and wish you guys were able to disable it. It seems to be causing issues in Pilots that get up close to 100k.

whizmo · 01-10-2013, 04:58 PM

I'm familar with knocking noises coming from engines with hydraulic tensioners and cam CHAINS, but a belt? In the tensioner theory, is the knocking noise from the un-tensioned belt hitting something? Do our engines have hydraulic tensioners?

- Mark

robs · 01-10-2013, 11:52 PM

Quote:

Originally Posted by whizmo

I'm familar with knocking noises coming from engines with hydraulic tensioners and cam CHAINS, but a belt? In the tensioner theory, is the knocking noise from the un-tensioned belt hitting something? Do our engines have hydraulic tensioners?

- Mark

Yes these motors have an oil loaded tensioner device. See here

More Information for GATES TCKWP329

The adjuster is the piston loaded barrel looking thing.

The noise comes not from the loose belt or from the pulley but rather from the loose tension adjuster. What happens is the oil in the adjuster weakens, The piston forces the pulley onto the belt but cannot hold so you end up with a metal to metal knocking noise with the the tensioner pulley.

I've heard this noise first hand on an Isuzu which uses almost an identical setup. It sounds like a rod knock. An isolated, low end metal to metal knock.

The telltale is that as you rev the motor eventually you hit a rpm at which the rotation of the belt forces the piston all the in and the noise stops completely.

whizmo · 01-11-2013, 03:15 AM

Good info, thanks. I like your tensioner theory. I could see some minute variation in how the parts are aligned at startup causing inconsistency in the noise.

- Mark

lexar940 · 01-18-2013, 12:32 PM

Thanks Whizmo and Robs, I'm understanding this better. Now the questions, and probably final one, do I do the 105K timing belt change at 85K
Thanks
A

whizmo · 01-18-2013, 03:07 PM

Quote:

Originally Posted by lexar940

...do I do the 105K timing belt change at 85K

If you're in there for other reasons, I would, but otherwise no.

- Mark

zarkara · 01-18-2013, 07:49 PM

I had the same noise happening some days and not others, sometimes very loud or sometimes quieter. I took it to Honda a few times, they said nothing wrong with engine so I ran with it that way for about 15k miles (75k to 90k). At 90k I decided to do timing belt replacement. They told me the tensioner needed replacement as it allowed too much movement and a carbon cleaning. A grand later the car is quiet as a nun. I don't know if it was the belt, the water pump or the tensioner, but with all three replaced its gone and the car has balls again like when it was new.

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01-03-2013, 03:32 AM	#16 (permalink)
rocky Super Senior Member Join Date: Jul 2004 Location: Red Sox Nation Posts: 8,673 Feedback Score: 0 reviews	does the OP have VCM? Sent from my iPhone using AutoGuide.com App

01-03-2013, 07:21 PM	#19 (permalink)
lexar940 Registered User Join Date: Dec 2012 Location: New Orleans, LA Posts: 13 Feedback Score: 0 reviews	Knocking noise is pretty loud but goes away when it warms up, 3-4 minutes. I'll rev it up tomorrow and see if it disappears at higher RPM. It's frustrating not knowing who can tell the difference between Valve lash adjustment and Timing belt, etc. I certainly don't want to replace the timing belt 20K too soon unless I know that's what it is. Thanks. By the way, what is VCM? Alexander

01-03-2013, 07:23 PM	#20 (permalink)
lexar940 Registered User Join Date: Dec 2012 Location: New Orleans, LA Posts: 13 Feedback Score: 0 reviews	Yes, It has VCM

01-07-2013, 04:05 PM	#21 (permalink)
lexar940 Registered User Join Date: Dec 2012 Location: New Orleans, LA Posts: 13 Feedback Score: 0 reviews	Engine starts the last 2 days quiet as a mouse. Today, deep knocking but goes away on warm up. So... can it still be the tensioner? Thanks

01-08-2013, 11:30 PM	#22 (permalink)
snoddy Registered User Join Date: Nov 2012 Location: Champaign, IL Posts: 1 Feedback Score: 0 reviews	I am having this exact same issue as you are all describing! '06 Pilot with a 86,000 miles. I am going to change the timing belt tensioner, oil (back to 5W20 instead of the 5W30 I just used) and I'll try the sea foam. As a side note, before I bought the car, the PO had the valve adjustment done because it was showing the cylinder misfire codes.

01-09-2013, 07:59 PM	#23 (permalink)
lexar940 Registered User Join Date: Dec 2012 Location: New Orleans, LA Posts: 13 Feedback Score: 0 reviews	Does it make the noise every day and does it go away on warm up as my car does? Please advise if changing the tensioner solves it Thanks Alexander

01-09-2013, 09:04 PM	#24 (permalink)
rocky Super Senior Member Join Date: Jul 2004 Location: Red Sox Nation Posts: 8,673 Feedback Score: 0 reviews	I'm just very suspicious of Honda's VCM and wish you guys were able to disable it. It seems to be causing issues in Pilots that get up close to 100k.

01-10-2013, 04:58 PM	#25 (permalink)
whizmo Registered User Join Date: Dec 2005 Location: WA State Posts: 2,045 Feedback Score: 0 reviews	I'm familar with knocking noises coming from engines with hydraulic tensioners and cam CHAINS, but a belt? In the tensioner theory, is the knocking noise from the un-tensioned belt hitting something? Do our engines have hydraulic tensioners? - Mark

01-11-2013, 03:15 AM	#27 (permalink)
whizmo Registered User Join Date: Dec 2005 Location: WA State Posts: 2,045 Feedback Score: 0 reviews	Good info, thanks. I like your tensioner theory. I could see some minute variation in how the parts are aligned at startup causing inconsistency in the noise. - Mark

01-18-2013, 12:32 PM	#28 (permalink)
lexar940 Registered User Join Date: Dec 2012 Location: New Orleans, LA Posts: 13 Feedback Score: 0 reviews	Thanks Whizmo and Robs, I'm understanding this better. Now the questions, and probably final one, do I do the 105K timing belt change at 85K Thanks A

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01-18-2013, 07:49 PM	#30 (permalink)
zarkara Registered User Join Date: Jan 2013 Location: Tampa FL Posts: 1 Feedback Score: 0 reviews	I had the same noise happening some days and not others, sometimes very loud or sometimes quieter. I took it to Honda a few times, they said nothing wrong with engine so I ran with it that way for about 15k miles (75k to 90k). At 90k I decided to do timing belt replacement. They told me the tensioner needed replacement as it allowed too much movement and a carbon cleaning. A grand later the car is quiet as a nun. I don't know if it was the belt, the water pump or the tensioner, but with all three replaced its gone and the car has balls again like when it was new.