Detonation at 6500 RPM

[wikdzr1]

I was wondering if any one experiances any detonation at high RPM. I use 94 sunnoco fuel. Around 6000-6500 rpm I hear the valves rattle?

Any thoughts?


Also I heard a loud pop ( Metal snap sound) when backing up the otherday. Now periodicaly I hear a squeak or pounding while driving. I have pulled the wheel but it looks okay under there. I have also slid under my car and looked at u-joints etc & cannot find anything out of norm. any ideas

[Z Factor]

Hello, and welcome to the forum.

I have never experienced the problems you described, so I cannot say for certain what you heard/ are hearing. Have you had your car tuned, or has it been a long time?

[wikdzr1]

I have replaced the plugs a few months back & set to .050, i plan to pull the plentum & replace the wires in spring.

[Patton]

Around 6000-6500 rpm I hear the valves rattle

Hell at 6500 what isnt rattling!

What do you mean?

[FU]

When is the last time that the fuel filter was changed ?

[wikdzr1]

I have not replaced the filter as of yet! 65k miles I will ASAP! It is my U-joint I will replace this week!

[FU]

How did the fuel filter change work out for you ?

[wikdzr1]

I did not get a chance to change it yet, I will let youknow as soon as I do. I also found that I need to replace the U-joints

[1990 quasar blue]

I posted a link on your last post to help with the u-joints. What's the chance you have a heat shield making the rattling noise? Just a thought.

[wikdzr1]

Thank you for the information, Mark Haibek is currently changing out my gears to 4:10 . I will let youo know the outcome.

regards, Brett