Detonation at 6500 RPM - ZR-1 Net Registry Forums

wikdzr1 · 02-26-2004

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 · 02-26-2004

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 · 02-27-2004

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

Patton · 03-01-2004

Quote:

Around 6000-6500 rpm I hear the valves rattle

Hell at 6500 what isnt rattling!

What do you mean?

FU · 03-11-2004

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

wikdzr1 · 03-31-2004

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 · 04-03-2004

How did the fuel filter change work out for you ?

wikdzr1 · 04-06-2004

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 · 04-08-2004

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 · 05-19-2004

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

02-26-2004	#1
wikdzr1 Join Date: Feb 2004 Posts: 21	Detonation at 6500 RPM 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

02-26-2004	#2
Z Factor Join Date: Dec 2003 Location: S. Florida Posts: 2,647	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?

02-27-2004	#3
wikdzr1 Join Date: Feb 2004 Posts: 21	I have replaced the plugs a few months back & set to .050, i plan to pull the plentum & replace the wires in spring.

03-11-2004	#5
FU Join Date: Mar 2004 Location: Found Member Posts: 4,327	When is the last time that the fuel filter was changed ?

03-31-2004	#6
wikdzr1 Join Date: Feb 2004 Posts: 21	I have not replaced the filter as of yet! 65k miles I will ASAP! It is my U-joint I will replace this week!

04-03-2004	#7
FU Join Date: Mar 2004 Location: Found Member Posts: 4,327	How did the fuel filter change work out for you ?

04-06-2004	#8
wikdzr1 Join Date: Feb 2004 Posts: 21	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

04-08-2004	#9
1990 quasar blue Join Date: Feb 2004 Location: Ma Posts: 403	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.

05-19-2004	#10
wikdzr1 Join Date: Feb 2004 Posts: 21	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