knocking/tapping sound? - Page 2

NJSierra · 11-14-2007, 06:13 PM

Yea, that doesn't sound right. I too use a k/n oil filter on my wife's '07 tahoe. It seems to be working fine. I don't change the goats oil, my dealership down the road, owned by so-called family, has a deal where you buy a new car from them they will change your oil for as long as u own the car. They even use mobil 1 and told me they would still change it every 3000 miles. I had goat for almost one full year and only have apprx. 850 miles.

LOWET · 11-15-2007, 09:08 AM

Quote:

Originally Posted by GTOsarge

Thanks for the input folks. I changed the oil myself. Mobile 1. No cam. No low oil levels. I plugged my scanner in before I took it to the dealer. No codes.
I'll give them another week and see what they come up with.

Let us know how you make out with it

GTOsarge · 11-28-2007, 06:29 PM

Got the car back yesterday. They replaced the cam and lifters. I saw the old cam. It had chatter marks on one lobe. Looked like someone took a round file and went around the top of the lobe. Anyway all covered by warranty.
No scratches or dents. I nailed it a few times on the way home and it runs as advertised. Glad to have it back.

6QTS11OZ · 11-29-2007, 08:24 AM

Quote:

Originally Posted by GTOsarge

Got the car back yesterday. They replaced the cam and lifters. I saw the old cam. It had chatter marks on one lobe. Looked like someone took a round file and went around the top of the lobe. Anyway all covered by warranty.
No scratches or dents. I nailed it a few times on the way home and it runs as advertised. Glad to have it back.

Cool!

UdnUdnGTO · 11-29-2007, 10:41 AM

Quote:

Originally Posted by GTOsarge

Update. When I changed the oil 4 hundred miles ago I used a K&N oil filter. My bad for not replacing it before taking it to the dealer for an engine knock.
When I talked to them this morning they asked about the filter and said that could be causing the problem. He said it could be starving the engine for oil???
Soooo.... they are going to change the filter and see If the noise goes away.

OMG, that is new one on dealer/service manager psycho babble. I would love hear K&N view on that. Change the filter?? One of the highest rated filters is K&N. The medium is excellent and helps keep clean the longer drain intervals used by synthetic oils. Let me guess, they also recommended 3,000 oil change intervals, right?

Barbarians, that all they are preying on people that must defend themselves from such idioicy.

Good luck.

PDQ GTO · 11-29-2007, 04:47 PM

Quote:

Originally Posted by Red Bearded Goat

Lots of people use that K&N oil filter including myself and don't have a problem... sounds fishy... good luck!

K&N oil filter causing the noise, I rather doubt it, very-very fishy. You would think the dealership could have come-up with something more plausible than that for an excuse. I use K&N, zero issues...

6.0goat · 06-01-2008, 09:31 AM

Mine does this same thing. Between 1500 to 2000 rpm 25 to 45 mph in 4th, 5th or 6th. It drives me nuts. I suppose I'm going to have to make a trip to the dealer as bad as I hate to.