Help! Loud clanking noise on engine... - SR20 Forum
 
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#1 (permalink) Old 10-29-2004, 10:30 AM
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Help! Loud clanking noise on engine...

I turned the car on this morning and i heard a loud clanking noise... Popped the hood and didnt see anything unusual but the noise sounds like its coming from the head. I checked belts around engine to find anything unusual. I took it for a drive and everything still runs fine. Still has power like it always had. So i took it for a short drive to let it warm up well. Checked under hood still making the loud clanking noise. It sounds like metal hitting metal sound. any info if this engine is done??

'00 Q45 32 valves 4 cams and a ishh load of gas!!!
'02 G20 Sport - 05 Maxima HID. AEM intake. R.I.P.
'92 SE-R - Bruised with a few bolt ons R.I.P
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#2 (permalink) Old 10-29-2004, 11:18 AM
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Quote:
Originally Posted by Viruz1
I turned the car on this morning and i heard a loud clanking noise... Popped the hood and didnt see anything unusual but the noise sounds like its coming from the head. I checked belts around engine to find anything unusual. I took it for a drive and everything still runs fine. Still has power like it always had. So i took it for a short drive to let it warm up well. Checked under hood still making the loud clanking noise. It sounds like metal hitting metal sound. any info if this engine is done??


Uhhh...hopefully you didn't drive around too much. Just a possible scenario would be something loose clanking around under the valve cover, like, say a rocker arm or maybe a loose bolt.

Last edited by Nitelife; 10-29-2004 at 03:33 PM.
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#3 (permalink) Old 10-29-2004, 11:34 AM
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Could it be a bad timing chain or timing chain gauide or something like that. I drove it work which is about 3 miles.

'00 Q45 32 valves 4 cams and a ishh load of gas!!!
'02 G20 Sport - 05 Maxima HID. AEM intake. R.I.P.
'92 SE-R - Bruised with a few bolt ons R.I.P
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#4 (permalink) Old 10-29-2004, 11:39 AM
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could be the beggining of a bearing that is about to be spun or the problem can be a loose bolt, or rocker arms stoppers, but u never *** i had a slight pitterpatter in my engine, and my shit spun 2 bearings on tuesday going home to pick up somthing in the middle of the southern state better check on it befor it is too late.

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#5 (permalink) Old 10-29-2004, 11:45 AM
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crap now im shittin bricks! It just started overnight though. and i havent beat on the engine or anything. ill have to check my oil on my next break as well as the coolant fluid.

'00 Q45 32 valves 4 cams and a ishh load of gas!!!
'02 G20 Sport - 05 Maxima HID. AEM intake. R.I.P.
'92 SE-R - Bruised with a few bolt ons R.I.P
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#6 (permalink) Old 10-29-2004, 11:56 AM
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Could be a bad lifter but that is more of a metal on metal tick than a clank. Sounds more like a rod bearing , you don't have to beat the engine for it to happen believe me I know.

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#7 (permalink) Old 10-29-2004, 12:09 PM
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check your oil pan if it has any dents in it. dats all i can say

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#8 (permalink) Old 10-29-2004, 12:39 PM
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if you start the car and remove one plug wire at a time you can find out if you have a bad bearing. when the plug wire is removed from the cylinder that has a problem the noise will go away.

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#9 (permalink) Old 10-29-2004, 01:42 PM
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^^ Good tip, BTW bad bearings arent fixable or if they are, its not worth it since JDM engines are so cheap?

Will a compression test also show if the engine is still healthy maybe something else?

'00 Q45 32 valves 4 cams and a ishh load of gas!!!
'02 G20 Sport - 05 Maxima HID. AEM intake. R.I.P.
'92 SE-R - Bruised with a few bolt ons R.I.P
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#10 (permalink) Old 10-29-2004, 02:00 PM
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Quote:
Originally Posted by Viruz1
^^ Good tip, BTW bad bearings arent fixable or if they are, its not worth it since JDM engines are so cheap?

Will a compression test also show if the engine is still healthy maybe something else?

you can replace the rod bearings for about $30-50 but its hard to do with the motor in the car(not 100% sure it can be done with out removing the motor). A compression will tell if you have bad rings or a valve issue. A stethoscope could help you pin point the location of the noise.

94 se-r 342whp 300lbft @ 15psi
92 se-r sr20ve with N1 cams soon to turbo
http://www.cardomain.com/id/cortrim1
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Last edited by cortrim1; 10-29-2004 at 02:03 PM.
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#11 (permalink) Old 10-29-2004, 02:02 PM
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Pull your valve cover and check. There was a post a while ago that sounded very similiar to this. The person had the timing chain guide break and was bouncing off the chain.

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#12 (permalink) Old 10-29-2004, 02:45 PM
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Quote:
Originally Posted by cortrim1
you can replace the rod bearings for about $30-50 but its hard to do with the motor in the car(not 100% sure it can be done with out removing the motor). A compression will tell if you have bad rings or a valve issue. A stethoscope could help you pin point the location of the noise.
1. not a good idea to do the bearings in the car(don't do it)
2. if the crank is mard at all it will need to be re-surfaced(or replaced)
3. buy a JDM motor and just swap then when you get a chance rebuild the motor that has the bearing problem. At that time you can set it up any way you want ie. turbo, high CR , or what ever.

Just my opinion, i have found it to be the easiest way for me. Lets hope it is just something simple and you have it fixed tonight.

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#13 (permalink) Old 10-29-2004, 02:52 PM
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Ok i went to my friends shop and we figured the noise and the problem... Loose EGR plug on the exhaust manifold. LOL!

'00 Q45 32 valves 4 cams and a ishh load of gas!!!
'02 G20 Sport - 05 Maxima HID. AEM intake. R.I.P.
'92 SE-R - Bruised with a few bolt ons R.I.P
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#14 (permalink) Old 10-29-2004, 03:06 PM
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Quote:
Originally Posted by Viruz1
Ok i went to my friends shop and we figured the noise and the problem... Loose EGR plug on the exhaust manifold. LOL!

good at least it was nothing major.

94 se-r 342whp 300lbft @ 15psi
92 se-r sr20ve with N1 cams soon to turbo
http://www.cardomain.com/id/cortrim1
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