Thread: Guys Need Help! 8.5 degrees of knock on a Stock Motor?

Results 1 to 13 of 13
  1. #1 Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Banned
    Join Date
    Jan 2013
    Location
    maryland
    Posts
    1,508
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Hey hit the beltway today and wot to get out of a heavy traffic lane and saw 8.5 of knock whoa is that normal? the more i wot the lower it went tho is that normal? got to my destanation pop the hood to check a couple things on my aeroforce its telling my i have 2 sometimes 4 misfires i might have a vaccum leak being as my boost gauge shows only 5.5 or 6 psi of boost on my gauge could it be vac leak? oil havent reached the 3k mark so that shouldnt be the issue i also noticed last night i was in the passenger seat in the car wiring some things and felt a lot of vibration could it be motor mounts any help would be appreciated also the ses light came on while i was at wot and stayed on
    Reply With Quote  
     

  2. #2 Re: Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Donating Users 16MustangVet's Avatar
    Join Date
    May 2009
    Location
    Sh1t hole Afghanistan Currently
    Posts
    5,418
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    sounds like false knock, car needs to have the regular maintenance done first. It doesn't sound like the car is not operating as it should so you need to figure out the vibrations and check the ses lights first.
    Reply With Quote  
     

  3. #3 Re: Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Banned
    Join Date
    Jan 2013
    Location
    maryland
    Posts
    1,508
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    i think it is false knock as well because yesterday everything was fine... could it be the motor mounts other than the vac issues could the mounts be replaced with better ones take care of the vibration im getting or flipping them would help? plugs are getting changed tommorrow, ses light only comes on at wot tho never me just routine "no heavy foot" driving
    Reply With Quote  
     

  4. #4 Re: Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Donating Users 16MustangVet's Avatar
    Join Date
    May 2009
    Location
    Sh1t hole Afghanistan Currently
    Posts
    5,418
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    before saying maybe this or maybe that go read the damn ses light! just saying................
    Reply With Quote  
     

  5. #5 Re: Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Banned
    Join Date
    Jan 2013
    Location
    maryland
    Posts
    1,508
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by 98GrandPrixIraqVet View Post
    before saying maybe this or maybe that go read the damn ses light! just saying................
    Lol ok I will check it out

    Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
    Reply With Quote  
     

  6. #6 Re: Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Donating Users 16MustangVet's Avatar
    Join Date
    May 2009
    Location
    Sh1t hole Afghanistan Currently
    Posts
    5,418
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    guessing is pointless when the ses light will at the very least will tell you where to start. Didn't mean to be rude earlier either
    Reply With Quote  
     

  7. #7 Re: Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
    Join Date
    Sep 2009
    Location
    Rogers, MN
    Posts
    21,030
    Thanks (Received)
    21
    Likes (Received)
    45
    Dislikes (Received)
    0
    5+ kr stock seems normal to me.

    Though vibrations arent normal and make sure you are running 91+ pump gas.


    6ish psi stock is normal too, get a real gauge and do a smoke test on the vacuum lines to rule out vacuum leaks.

    SMGPFC Member #1
    Reply With Quote  
     

  8. #8 Re: Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Banned
    Join Date
    Jan 2013
    Location
    maryland
    Posts
    1,508
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Update on the issue: P0301 misfire on cylinder 1 gotta replace the coil might as well replace all spark plugs while I'm at
    And also found this

    Reply With Quote  
     

  9. #9 Re: Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
    Join Date
    Sep 2009
    Location
    Rogers, MN
    Posts
    21,030
    Thanks (Received)
    21
    Likes (Received)
    45
    Dislikes (Received)
    0
    Just don't get platinum plugs..

    SMGPFC Member #1
    Reply With Quote  
     

  10. #10 Re: Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Banned
    Join Date
    Jan 2013
    Location
    maryland
    Posts
    1,508
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    I was gonna get either ac delcos or durulast anybody ever use durulast? 25.99 at my local parts store can't beat that price just don't want s@#$$y wires
    Reply With Quote  
     

  11. #11 Re: Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
    Join Date
    Sep 2009
    Location
    Rogers, MN
    Posts
    21,030
    Thanks (Received)
    21
    Likes (Received)
    45
    Dislikes (Received)
    0
    Stick with delco plugs if stock.

    Duralast wires should be fine, or see if the carry delco wires too.

    SMGPFC Member #1
    Reply With Quote  
     

  12. #12 Re: Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Banned
    Join Date
    Jan 2013
    Location
    maryland
    Posts
    1,508
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Just Checked they didn't well currently they are out of stock so duralast it is thanks guys
    Reply With Quote  
     

  13. #13 Re: Guys Need Help! 8.5 degrees of knock on a Stock Motor? 
    Banned
    Join Date
    Jan 2013
    Location
    maryland
    Posts
    1,508
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Replaced vac hose that was broken, replaced cylinder 1 and 4 didn't even have to change plugs but will keep plugs for future engine work I do SES light is off for now
    Last edited by jayroca; 10-09-2013 at 04:44 PM.
    Reply With Quote  
     

Similar Threads

  1. stock (allegedly) gtp with flow mods nets 10 degrees kr at wot?
    By Leiliel666 in forum General Grand Prix Discussion
    Replies: 52
    Last Post: 08-19-2014, 03:55 AM
  2. 98 Regal motor knock
    By MidnightBlue in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 1
    Last Post: 04-09-2013, 08:49 PM
  3. My knock on my stock 97 gtp
    By JB122894 in forum General Grand Prix Discussion
    Replies: 14
    Last Post: 03-16-2013, 09:27 AM
  4. Knock question, need the motor pros
    By 99gp in forum 3.8L V6 Naturally Aspirated (L36)(L26)
    Replies: 10
    Last Post: 08-01-2011, 09:27 AM
  5. 2003 Grand Prix GTP Motor Knock
    By NvMySi83 in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 17
    Last Post: 11-08-2009, 11:06 PM
Tags for this Thread

View Tag Cloud

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •