clicking...
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clicking...
so at about 3500 rpm i get this clicking coming from under the hood. My dad refered to it as "spark knock" whether that is accurate or not i have no clue. But he suggested putting higher octane fuel in, it stoped, but with gas prices now i can't do that all the time. So its back, any suggestions? Everything is stock right now. I have plans for k&n intake, and cat-back eventually... still looking at all my options as far as upgrades go.
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HI ME ME, located in HERE HERE... it sometimes is nice to know your general location
for advice... ie living in alaska a 180 t-stat isnt necessary.. but in texas its perfectly
fine.
Rand
japanoak japanoak is offline
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for advice... ie living in alaska a 180 t-stat isnt necessary.. but in texas its perfectly
fine.
Rand
japanoak japanoak is offline
Stage I Member
Name: me me
Location: here, here
Join Date: Sun May 2006
Posts: 4
#12
some personal information i don't care to post on the internet, sorry. I live in Arizona and my name is Dan, i would rather not share more than that.
Japanoak- i read it on an old drumstick of mine, Pro-mark 5b Japan Oak. I now use Vic Firth 5a hickory sticks... for those drummers out there. If there are any.
Summers here can easily reach 120*, What does changing the Themostat from 190*(stock) to 180* do? I assume it turns the cooling system on sooner?
Japanoak- i read it on an old drumstick of mine, Pro-mark 5b Japan Oak. I now use Vic Firth 5a hickory sticks... for those drummers out there. If there are any.
Summers here can easily reach 120*, What does changing the Themostat from 190*(stock) to 180* do? I assume it turns the cooling system on sooner?
Last edited by japanoak; 05-12-2006 at 10:05 AM.
#13
It definitely sounds like a spark knock... Basically, your engine is running too hot, and your fuel partially explodes before the spark plug ignites. Can be bad for the engine if it's really loud(bad), or over a prolonged period. To stop it, you can sometimes lower your thermostat temp (180deg like they said above) which will start flowing water through your engine at a lower temp. or your can have a dealer flash (or reload) your ECM programming to retard the timing. The later worked on my truck, but I have the 4.0L. I'd try the thermostat first, then try taking it into the dealer if it fails. They will probably charge you since most likely your out of warrenty.
BTW, Octane basically raises the flashpoint of fuel. So the more octane, the more pressure and heat it can take before it flashes. That's why higher compression engines require higher octane. Some chemistry law equates pressure increase to temp increase... Can't remember off-hand what the name of it is though. Oh, and an increase in your timing makes the gas compress more before the spark plug ignites, hence more pressure/heat and possibly spark knock/pre-detenation.
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BTW, Octane basically raises the flashpoint of fuel. So the more octane, the more pressure and heat it can take before it flashes. That's why higher compression engines require higher octane. Some chemistry law equates pressure increase to temp increase... Can't remember off-hand what the name of it is though. Oh, and an increase in your timing makes the gas compress more before the spark plug ignites, hence more pressure/heat and possibly spark knock/pre-detenation.
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