Here we go again with the knocking noise

Neon4Life · Post by **Neon4Life** » Mon Nov 10, 2008 11:24 am

So this happened last cold season
and its happeneing again this season. Whenever
temperatures are cold outside like beloew 45 and i
turn my car on ( when cars completely cold ) i suddenly
hear a knocking noise coming from the engine and i dont
know what it is, but the noise goes away after a few seconds.

is this something i should look more into or just let it go ?

[DJ]Tomski · Post by **[DJ]Tomski** » Mon Nov 10, 2008 12:20 pm

im pretty sure neons are known to have that noise. mine does it too.

jT · Post by jT » Mon Nov 10, 2008 12:26 pm

why on earth would you use white color text? not everyone uses the default dark color theme.

JeffM · Post by **JeffM** » Mon Nov 10, 2008 12:30 pm

Mine does it when it's cold out. I think it's normal for Neons. I heard you can switch to a different oil to make it dampen the sound. Not sure about it though.

Swordfish2Cowboy · Post by **Swordfish2Cowboy** » Mon Nov 10, 2008 12:33 pm

colored text is awesome.

So
I'm thinking.
It's the oil.
Too heavy or not heavy enough.
Probably go for a lower weight in the winter because things tend to stick more.
It's piston slap, or some shit, because the oil isn't flowing the way it should because of the temperature difference.

At least, that's along the same lines as all the other topics came to.

Get used to it, or try different oil. Someone else will chime in and confirm this theory (I hope). If not, well, I'm dumb.

Neon4Life · Post by **Neon4Life** » Mon Nov 10, 2008 12:54 pm

oh ok thanks for the input guys.
and i didnt know u could change the default background color thing thats why i thought everyones was default brown or w/e.

lol.

fixitmattman · Post by **fixitmattman** » Mon Nov 10, 2008 4:21 pm

http://forums.neons.org/viewtopic.php?f=40&t=299905

Neon4Life · Post by **Neon4Life** » Mon Nov 10, 2008 4:38 pm

fixitmattman wrote:http://forums.neons.org/viewtopic.php?f=40&t=299905

thanks for the link

excon · Post by **excon** » Mon Nov 10, 2008 11:13 pm

mine knocks too. I use 5W-30. I think cheap gas doesn't help either... I run 87 throughout the winter and it knocks.

...just be gentle for the first minute or two while she warms up...

^ I know, "that's what she said."

fixitmattman · Post by **fixitmattman** » Mon Nov 10, 2008 11:33 pm

Bottle of fuel line antifreeze helps if you don't run much fuel through your car, helps absorb the moisture.

Paul56 · Post by **Paul56** » Tue Nov 11, 2008 8:02 am

Unless the noise is very loud I would not worry about it... pretty normal when it is cold.

I run 5W-30, use good quality gas and still have the issue when it is cold. I let it warm up a bit and drive it gently until the noise subsides.

I had the same noise last winter... did a used oil analysis on the engine this summer which came back just fine with really good wear levels.

The truth of the matter is that these cars were the cheapest Chrysler was producing at the time and do not having the engineering or smoothness of say a BMW. My bosses BMW M3 purrs like a kitten and chews up the road like a leopard.

Neon4Life · Post by **Neon4Life** » Tue Nov 11, 2008 10:31 am

well mine only last a few seconds and yeah it goes away by the time i drive it cause i let it warm up for about 3 or 5 minutes. so its cool.

but what do u mean by using good gas ?

Post by **occasional demons** » Tue Nov 11, 2008 11:55 am

Paul56 wrote: The truth of the matter is that these cars were the cheapest Chrysler was producing at the time and do not having the engineering or smoothness of say a BMW. My bosses BMW M3 purrs like a kitten and chews up the road like a leopard.

Funny you should say that, as BMW used the 1.6 (based from the 2.0) in the Mini's. The engine itself will last well over 200,000 if taken care of. At least the bottom end. Replacing the (exhaust) valve guides around the 100-120,000 mile mark helps the cyl. head.
But then not many engines have the valve guides stay within spec. throughout their life. Valve guides are something taken for granted anymore, as they do last much longer than in the past, but they still wear considering the environment they're in, you really can't complain.

Paul56 · Post by **Paul56** » Tue Nov 11, 2008 12:24 pm

fresh04neon wrote:well mine only last a few seconds and yeah it goes away by the time i drive it cause i let it warm up for about 3 or 5 minutes. so its cool.

but what do u mean by using good gas ?

Good gas explained...

http://www.toptiergas.com/

I always fill with Petro-Canada or Shell here in Canada.

Neon4Life · Post by **Neon4Life** » Tue Nov 11, 2008 12:30 pm

alrite.
thanks for the link.

Donkeypuncher · Post by **Donkeypuncher** » Tue Nov 11, 2008 2:39 pm

Nice link. Turns out quiktrip is top tier, and it's the cheapest in my city. Who would have thought being cheap makes me buy good gas.