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Valve ticking sound from engine

Discussion in 'Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)' started by Thunderchild, Jun 14, 2011.

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  1. Thunderchild

    Thunderchild New Member

    Hello all. I have an issue that is developing with my Tahoe.

    Stats:

    2004 Tahoe, 5.3 litre Vortex engine, 123,000 miles.

    I have been hearing a valve tick lately coming from the drivers side rear of the engine. I need to know if anyone has had any experience with this and what it could be? I will be giving it to my mechanic next week to diagnose but want some opinions on what it could be so I won't go in to see him blind.

    Thanks in advance.
  2. Thunderchild

    Thunderchild New Member

    Anyone with any idea's?
  3. silveradotrailblazer

    silveradotrailblazer New Member 1000 Posts 100 Posts

    There hasn't been alot of members on today, but maybe later/tonight someone can help you. 123,000 miles is alot of miles on that engine. Are you the original owner or do you know the maintiance history? Could be just a exhaust leak.
  4. Thunderchild

    Thunderchild New Member

    My brother was the original owner. I inherited it fro him. The maintenance was kept up on it and I have been on it pretty good. An exhaust leak is what my Durango had. This could be it. Thanks for the insight.
  5. silveradotrailblazer

    silveradotrailblazer New Member 1000 Posts 100 Posts

    Sorry but my last post should read 123,000 miles is NOT alot of miles for that engine.
  6. 98Hotrod98

    98Hotrod98 New Member 100 Posts

    I believe this is normal for GM 5.3L's. here is a TSB on the subject. Some say it just starts all of a sudden after X time.
    There is also another TSB on 07-09 5.3L with AFM where lifters must be replaced ( but this shouldnt affect you )
    *** When in doubt ALWAYS have it checked *** the $50 bucks or whatever to have it looked at is better than a rebuild.

    #02-06-01-022J: Information on Engine Ticking Noise - (Apr 24, 2009)

    Some of the above vehicles may exhibit a random ticking noise that is most audible on an engine with a coolant temperature of 70°C (158°F) or higher and from idle to approximately 1500 RPM. The noise usually is most noticeable at the rear of the driver's side front wheel well. Customers may also comment about hearing a tick noise inside the vehicle at idle such as when sitting at a drive through window. All 6600 Duramax™ diesel engines have this condition; however, some are more audible than others. Engine build variation from engine to engine contributes to differences in perceived volume. All Duramax™ engines are manufactured to very close tolerances to meet the durability and reliability standards.

    This noise is caused by the relationship of the engine cylinder block, crankshaft journals, bearing inserts and the oil film. This relationship may allow a vibration that resonates through the cylinder block and is heard as a metallic ticking noise. The noise could be described as an irregular ticking or clacking sound, like random typing on a mechanical typewriter.

    This condition has been present in diesel engines produced for the last 20 or more years. The overall noise reduction in engines produced today makes this noise seem new when, in fact, it was masked by other noises in the past. Many manufacturers such as Isuzu, Hino, Mitsubishi, and Nissan report a similar condition in their diesel engines. Testing and engine teardowns with this condition reveal no condition that would affect reliability or durability of this engine.

    Dealers should not attempt to compare any customer vehicles exhibiting this noise with other similar vehicles as the noise is different from vehicle to vehicle and this may lead to the incorrect conclusion that the vehicle has a condition. This noise is a normal operating characteristic of the engine. This noise has no short or long term effects on the engine. Do not attempt repairs for this noise.

    Important: Replacing the engine or internal components for this noise will not reduce or eliminate the noise.
  7. Thunderchild

    Thunderchild New Member

    98HotRod:

    Thanks for that info. I am going to put her in the shop next week because I will be getting on the road for a couple of days for some R&R. Thanks all for the info also.
  8. Thunderchild

    Thunderchild New Member

    Well, I changed the oil 3 weeks ago with Pennzoil Platinum 5w-30. The ticking has stopped! Even in the cold weather it has not come back. I used a Mobil 1 Extended Life filter. So far so good. I wonder if the synthetic oil did any cleaning of the upper valve train? I did also add a little MMO the last oil change before this one. There must have been some cleaning going on.
  9. Thunderchild

    Thunderchild New Member

    140,000+ miles and the ticking still has not come back. I did recently use Kreen to do an internal engine cleaning. Still no ticking even in the cold. And, it runs a lot smoother after the cleaning. I used it in the oil and the fuel.

    :glasses:

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