after a highspeed highway run i brought my car to the shoulder to do it again and what do you know i killed it.... damn.... but the problem came after i killed it. theres this ticking sound. its coming from right behind the speedo and im scared. anyone know what it could be and tips on how to fix it. i need help on this one bad. oh and it sounds pretty close to the intake plenum when i pop the hood and it sometimes goes away

 

Since it comes and goes, it's probably lifter tick. There really is no "fix" other than replacing all the lifters with what is called 3rd gen lifters. Even then, people have still reported the occasional ticking. It won't harm your engine, it just sounds bad. How long has it been since you changed your oil? Do you use a high quality oil?

 

well.... i just got the car 3 weeks ago and im doing an oil change at the end of this week. i need money. but as far as i know the previous owner whos a good guy used decent quality oil. i read about the lifters a while back and does that mean that i need a larger delivery bore? or will that effect anything.

 

Generally, lifter noise is only present after the vehicle has been sitting for a while. After being noisy, it will eventually go away. Once it goes away, it shouldn't come back until the engine is shut down and allowed to sit for a while. If the noise was NOT there prior to your high speed run- lifters can generally be ruled out.

J

 

does it make a difference that the tick increases frequency as i raise the rpms?

 

I have noticed with my '93 3000GT SL, the ticking tends to get worse in two cases... When she needs an oil change (or is running low on oil) as mentioned above and when the weather is getting colder. I have far more ticking during the winter than summer.

Just my two cents, hope it helps.

 

well ima change the oil tomorrow and see if that helps

 

They tick will increase with engine speed, but I guess it really depends upon whether it is a tick or a knock. You said the noise will go away right?

Have you checked the oil?

If the oil is full, start the car, slowly (very slowly) raise the RPM's to 3000, hold there for a few seconds, then slowly back it down to idle. That will normally re-prime the lifters.

 

oh yeah its definately a tick... like a fan blade running accross a strip of paper... but it goes away for a bit sometimes comes back but mostly when its gone its gone. but i think my oil change today will help it. im outting in synthetic along with a k&n filter