Tippy-tap Tippy-tap

[SnowBuck]

2005 Yukon XL 5.3 140k miles. For the very first time, Sunday morning: started up and TAP TAP TAP TAP. Checked the oil = full. Drove 2 blocks and voila...taping totally gone!?!?!? Ever heard of this?
Can't wait to turn the key Monday morning!

 

[Tonyrodz]

If it goes away when warm, most likely a broken exhaust manifold bolt. Super common.

 

[iamdub]

Good call, Tony.

If it is a broken bolt, there is (or was) a clamp for sale in the classifieds, if it's one that the clamp fits.

 

[SnowBuck]

It was the lifters on the left side! Man, am I glad I didn't do the head gasket LAST month because of a coolant leak as it'll be done now!!!

 

[OR VietVet]

If you are already gonna be in there, do lifters on both sides but you can drive those lifters that way for a long time with no problems other than a noise.

 

[SnowBuck]

I'm not a gambling man. I can't sleep with: "Well...it may never happen again". If it went bad on one side....I'll do both sides! I like this model so much, and dislike the newer ones...will fix it. What makes a lifter go bad at 140k anyway. !?!?!?!

 

[OR VietVet]

I'm not a gambling man. I can't sleep with: "Well...it may never happen again". If it went bad on one side....I'll do both sides! I like this model so much, and dislike the newer ones...will fix it. What makes a lifter go bad at 140k anyway. !?!?!?!

Tapping from the lifters is a well known problem. Doesn't happen to every engine though. It can also be linked to poor quality oil, filter and maintenance patterns. It is what it is. I love the NBS model as well and will fix my engine or replace if needed without hesitation.

 

[George B]

My last Burb was a 2003 with a lifter tick that came and went for the 58,000 miles I owned it. Would go away after it ran a few minutes. Sometimes it would go for months without making any noise.

 

[OR VietVet]

Yea, when you start to get to the point where the tap noise does not go away, then start planning for at least lifters, if not the cam as well.

 

[SnowBuck]

New lifters both sides. Woke up for my 1st cold start - expecting to hear something from River Dance! LOL Quieter then new! Now (from my other thread), let's see how the coolant leakage goes. Those AC Delco tablets worked like a charm. Now that we're flushed the system and replaced the (possibly bad) head gaskets...let's just see how that goes!