MY TRAILBLAZER HAS A TICKING NOISE COMING FROM THE ENGINE

Asked by Aug 03, 2012 at 11:33 AM about the 2008 Chevrolet TrailBlazer LT1 4WD

Question type: Maintenance & Repair

3 Answers

66,115

If it follows engine speed it's probably a valve tap. This happens when you get wear in the valve train. Usually from a partially collapsed hydraulic lifter. Actually it's nothing to worry about. Just an annoyance. HTH. -Jim

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You could try to put a small can of marvel mystery oil in your engine oil and run it for a complete oil change cycle. Should the hydraulic lifter be getting clogged up, this will slowly dissolve the carbon build up and restore it to full functionality. I would not advise just driving it till it breaks, it could cause engine damage. The marvel mystery oil can be purchased at any local parts store for around 3 to 4 bucks. This wonderful product will also clean your fuel system. Lucas brand also offers oil and fuel system treatments but I have use marval mystery oil for years.

1 of 1 people found this helpful.
10

Sea Foam brand additive stops the factory ticking that almost all Mazda's make. It is a cleaner and does something else that I can not explain, but my engine went from (needs a rebuild) to (sounds like a new engine). I don't add and drain, that is a waste of good oil. I just add 1/2 can and leave it in. It seems to evaporate out after about 2 months, then I add 1/4 can. No more tapping. I've been doing this for about 2 years. I was just about to sell it. It is a 1996 Mazda MVP 6 cyl., 125k

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