Rattling at WOT
Thread Starter
TECH Apprentice
Joined: Nov 2004
Posts: 309
Likes: 0
From: Tucson, AZ
Rattling at WOT Sometimes when I hit about 4k rpms at WOT there's a rattling noise coming from under the hood. Sounds like the driver's side. It only started after I Seafoamed my car and it doesn't happen very often.
Anybody have any ideas on what it might be?
Anybody have any ideas on what it might be?
Welcome to the club. I've got the same thing and it's detonation. I pulled my spark plugs and found a fair amount of oil on the threads of #7. I took it to G-Force and they ran a compression and leakdown test, both of which turned out OK. My guess is the lovely PCV system on these cars has let a fair amount of oil into the system. You could try running colder plugs, or getting a tune from someone who knows what they're doing (or do it yourself, if you know what you're doing).
-Mike
-Mike
Originally Posted by PG45
pinging maybe?
Teching In
Joined: Mar 2005
Posts: 35
Likes: 0
Sh*t
Originally Posted by SmaknSS
Thats what I think,It's possible to get pinging with out ank KR. Does the rattling sound kinda like a bunch of BB's striking something?
So now i'm worried (one more thing to worry about).
My question is this: How would my car be running lean w/ the VERY slight mods that I've got done at this point? Do some stock cars run lean as well? And wtf do i do at this point? Do i need to get a tune JUST to stop this pinging?
Thanks guys/gals!
- Jeff
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Staging Lane
Joined: Jul 2003
Posts: 86
Likes: 0
Originally Posted by ws6firehawk109
Thought it might have been a heat shield (since i just took it off for a master cylinder install) but that sonofabitch is on tight, so it's not the heatshield. It DOES sound like little pebbles (or bb's) hitting something and it's only at WOT.
So now i'm worried (one more thing to worry about).
My question is this: How would my car be running lean w/ the VERY slight mods that I've got done at this point? Do some stock cars run lean as well? And wtf do i do at this point? Do i need to get a tune JUST to stop this pinging?
Thanks guys/gals!
- Jeff
So now i'm worried (one more thing to worry about).
My question is this: How would my car be running lean w/ the VERY slight mods that I've got done at this point? Do some stock cars run lean as well? And wtf do i do at this point? Do i need to get a tune JUST to stop this pinging?
Thanks guys/gals!
- Jeff
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Verdad Gallardo Thread Starter
TECH Apprentice
Joined: Nov 2004
Posts: 309
Likes: 0
From: Tucson, AZ
Originally Posted by ws6firehawk109
Thought it might have been a heat shield (since i just took it off for a master cylinder install) but that sonofabitch is on tight, so it's not the heatshield. It DOES sound like little pebbles (or bb's) hitting something and it's only at WOT.
So now i'm worried (one more thing to worry about).
My question is this: How would my car be running lean w/ the VERY slight mods that I've got done at this point? Do some stock cars run lean as well? And wtf do i do at this point? Do i need to get a tune JUST to stop this pinging?
Thanks guys/gals!
- Jeff
So now i'm worried (one more thing to worry about).
My question is this: How would my car be running lean w/ the VERY slight mods that I've got done at this point? Do some stock cars run lean as well? And wtf do i do at this point? Do i need to get a tune JUST to stop this pinging?
Thanks guys/gals!
- Jeff
Holly crap That is EXACTLY what my car does up around +5K rpms!! Sounds just like a few BB's hitting something metal every now and then. Is a tune the best way to alleviate this problem? 
Staging Lane
Joined: Jul 2003
Posts: 86
Likes: 0
Originally Posted by Vertigo
Holly crap That is EXACTLY what my car does up around +5K rpms!! Sounds just like a few BB's hitting something metal every now and then. Is a tune the best way to alleviate this problem?
Originally Posted by TTTA
Aside from staying away from the high RPMs... yes
Staging Lane
Joined: Jul 2003
Posts: 86
Likes: 0
Originally Posted by Vertigo
Can you tell me just what has gone bad with the tune to cause this to happen? Timing?, air/fuel ratio?, etc???
I guess the speed density has a more rich tune?
