© Copyright 1995 thru 2008 - The Mustang Works™. All Rights Reserved.
MustangWorks.com is designed and hosted by Aero3 Media.
MustangWorks.com is designed and hosted by Aero3 Media.
09-13-2002, 11:24 AM | #1 |
Registered Member
Join Date: Feb 2001
Posts: 84
|
Knockers are killing me- Help!
Help! My 1990 5.0 purchased new in 1990 with 83k on it and bone stock has always run like the wind; perfectly. now all of a sudden, under WOT my boys are knocking near the end of the rpm range, around 4000-4500. Have always run 87 octane and never had a problem. any ideas? bump the timing up help?
__________________
1990 LX 5.0 Cobra Intake K&N filter ET 15.0 Yokohama ES 100. Cobra R 17's DynoMax SS's Pro 5.0 More to come |
09-13-2002, 11:44 AM | #2 |
Registered Member
Join Date: Apr 2001
Location: Gallatin, Tn
Posts: 1,326
|
How long has it been since it's last tune up? I suggest a Full tune up: fuel filter, plugs, wires, pcv valve and filter, etc... some injector cleaner too maybe and let us know.
__________________
|
09-13-2002, 11:58 AM | #3 |
Registered Member
Join Date: Feb 2001
Posts: 84
|
Never tuned up. K&N filter may also be dirty. could that be it too?
__________________
1990 LX 5.0 Cobra Intake K&N filter ET 15.0 Yokohama ES 100. Cobra R 17's DynoMax SS's Pro 5.0 More to come |
09-13-2002, 12:01 PM | #4 |
Registered Member
Join Date: Apr 2001
Location: Gallatin, Tn
Posts: 1,326
|
Absolutely, it can get the MAF dirty and the car not run properly also, go for the full tune up, clean the air filter and the MAF too, good luck let us know!
__________________
|
09-13-2002, 01:42 PM | #5 |
Registered Member
Join Date: Sep 2002
Posts: 158
|
If you advance your timing, you will have to increase your octane. I run mine at 14 degrees (stock is 10) and have to use 93 octane. On a bone stock motor you should run high octane anyway according to the owners manual. There are a few stages of detonation, pinging, knocking, pre-ignition, etc. If it is mild, you won't hear it, but it's still happening and causing some damage. Do the tune up first.
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
My 60' Is Killing Me.... How To Get It Down?!? | BowTie Eater 5 Liter | Windsor Power | 24 | 04-24-2002 08:02 AM |
Just KIlling Time!! | STROKER BILLY | Blue Oval Lounge | 2 | 02-06-2002 08:16 PM |
Plugs being gapped at .045 instead of .054 killing performance? | xspeed02 | Windsor Power | 2 | 05-15-2001 11:10 PM |
Winter is once again killing me. | exgmguy | Blue Oval Lounge | 13 | 02-04-2001 02:41 PM |
V6 Camaros killing 5.0's regularly? | fastang | Stang Stories | 17 | 01-05-2001 10:10 PM |