Guys, need some advice please

This is my first time posting, so forgive me if I sound stupid. I have had my 08 Tacoma for less than 6 months. Since the first month or so that I have had the truck, I have noticed a subtle knocking sound coming from the engine at low RPM. I have taken it in 4 times to have it looked at. The Service manager has come to the conclusion that it is spark knocking. I am not convinced, I know these trucks have the knock sensor on them. However, I cannot for the life of me accept that a truck should knock so much and it be normal. Do you guys have any experience with this? Please help me if you can. I love the truck, i have always wanted one, and just want it to run like it is supposed to.

Thanks in advance

 

have you tried filling up with maybe 91 or 93 octane?? i know that on the 06 i had, i ran regular a couple of times, and i had spark knock, but then switched to mid grade and it went away. try that and see what happens.

 

Are you talking about the ticking noise? Which is normal in these engines.

Welcome to TW!

 

thanks for the welcome! I say knock, but it is actually a dull ticking that happens when I accelerate. It happens when I get to 20-30 mph, then goes away after the rpm's level off

 

i have tried putting 93 in there. That is one of the things that the dealership said to do. It has not helped at all. Would synthetic oil help? I have heard that might be a possibility

 

synthetic may help slightly, but honestly, the "tick" that you hear is pretty common for the tacomas. kinda a combo between the fuel injectors, and an emission control module that causes it. nothing to worry about honestly. its a bit different from spark knock, which has a distinct sound altogether.

 

Just turn up the radio! Problem solved.

 

^Or throw on an aftermarket muffler.

 

I have an 08 Double Cab 4.0 V-6. No engine noise what so ever with 3,360 mi. I run 87 oct and 5W30 synthetic. I would keep on it until I was sure of what the problem is.....

 

It warms my heart to see they let deaf people on the internet.

These engines make a lot of noise. Injectors, cam followers, emissions valves, blah, yadda. Easy choice:

1. Forget about it. Get aftermarket exhaust / CAI and turn up the radio.

2. Worry about it until your sick and the dealer thinks you're nuts.

Truck will run the same either way.

 

The "Tacoma tick"....Mine has it,but I've stopped noticing.Don't sweat it,enjoy your truck and welcome to the site.

 

Mine has a slight tick but barely noticeable But mine does have a distinct Very high pitched sound, I didnt even notice until my brother who is sensitive to high frequency noises heard it. And now i notice it. Dont know what it is. Mine makes a kinda clang when i put it in gear and begin moving forward. It only happens at that time. Dunno what it is. I guess it is just engaging the drive train.

 

For starters, make sure EVERY time you take it in, you get written documentation of your visit and that it says exactly what you hear. If its something they cant fix now or even a yr from now, you'll need proof you took it in! Next thing you know you'll be at 36,001 miles and they won't touch it.

 

thanks for all the help guys, i am just going to keep an eye on it and make sure it does not get any worse. You guys have made me feel alot better.

 

"Tacoma Tick" - Thanks guys! Just got a Tacoma and thought this was unusual, and that there was something wrong. If people drive these 200k+, a "tick" is a small price to pay!

 

I went throgh same thing also, really bummed me out when I could not get a proper answer.
BUT THEN....I found this site, and all the questions were answered. Now...no big deal, you get use to it.

 

Sums up nicely how I feel.