Loud Knock - Very Scared, Need Help Immediately |
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Loud Knock - Very Scared, Need Help Immediately |
Nor.Cal.914 |
Dec 8 2005, 06:30 PM
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#1
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1975 914 3.0SC Group: Members Posts: 1,050 Joined: 28-January 05 From: Weatherford, TX Member No.: 3,523 Region Association: None |
I was just driving my car a minute ago and something very bad just happened. I had a concern about my revs earlier and how it wouldn't let me go over 4000 rpm. Well, I just replaced the coil and was trying it out to see if it helped my revs go past 4000. When I took it up there, something happened and a very loud knocking noise started happening. Another person on this thread had a post about a loud knocking noise that he heard when he started his car. Mine seems to be making the same kind of noise. I need help immediately! Any help as soon as possible would be helpful, please. Thank you very much.
-Chris |
lapuwali |
Dec 8 2005, 07:07 PM
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#2
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
By check the coil, I meant make sure you tightened it back down again after you changed it, to make sure it's not just rattling around loose.
If it's steady in volume and frequency, it's unlikely to be loose or missing plugs (good guess though), and they're generally loud enough that you have to yell over them. Valvetrain noise will almost always change in frequency with engine speed. Rule #14 of auto mechanics: if it starts making a new noise after you do something, check whatever it was you just did, then check everything around that. Anything you touched during that procedure is a prime suspect. Only then should you start worrying about other things. |
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