HELP Me Diagnose An Engine Problem
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,117
Likes: 1
From: El Paso TX
HELP Me Diagnose An Engine Problem
Hey all,
Had heads & cam done in late '04. Just recently started noticing a high pitched noise which I thought was a pulley or belt issue. Opened the hood today to do some work and listen for the sound. Listening from the passenger side I heard the normal sewing machine noise associated with my set-up. From the drivers side the noise was much more pronoounced with a steady clicking noise. I got inside the car and revved to about 3000 rpm and the clicking noise was louder and would speed up and slow down with the revs. With the hood closed I hear that high pitched noise inside the car. With it open I don't hear it very well.
I know you engine experts out there can help shed some light on my issue. I might just have tomake a trip to see Lou at LG. Thanks in advance for any help.
Matt
Had heads & cam done in late '04. Just recently started noticing a high pitched noise which I thought was a pulley or belt issue. Opened the hood today to do some work and listen for the sound. Listening from the passenger side I heard the normal sewing machine noise associated with my set-up. From the drivers side the noise was much more pronoounced with a steady clicking noise. I got inside the car and revved to about 3000 rpm and the clicking noise was louder and would speed up and slow down with the revs. With the hood closed I hear that high pitched noise inside the car. With it open I don't hear it very well.
I know you engine experts out there can help shed some light on my issue. I might just have tomake a trip to see Lou at LG. Thanks in advance for any help.
Matt
Melting Slicks
Joined: Nov 1999
Posts: 2,337
Likes: 847
From: MI
Cruise-In VI Veteran
Hello,
You should do some basic troubleshooting in the following areas.
Note, If you can locate a “mechanics stethoscope, this will greatly aid your chance of locating the noise.
Check the following areas;
Header flange to head bolts, look for carbon traces (exhaust leaks) retorque these bolts, possible blown header to head flange gasket.
Inspect the header collector (under car) for carbon traces (exhaust leaks). Retorque these bolts, possible blown header collector flange gasket.
Inspect the header for pinholes, paying attention to the bends in the headers using a flash light and mirror.
Retorque the spark plugs.
If the above inspection did not isolate the discrepancy, use the “mechanics stethoscope” and probe the fuel injectors and rocker cover for noise while the engine is running at idle.
Good luck,
Kevin
You should do some basic troubleshooting in the following areas.
Note, If you can locate a “mechanics stethoscope, this will greatly aid your chance of locating the noise.
Check the following areas;
Header flange to head bolts, look for carbon traces (exhaust leaks) retorque these bolts, possible blown header to head flange gasket.
Inspect the header collector (under car) for carbon traces (exhaust leaks). Retorque these bolts, possible blown header collector flange gasket.
Inspect the header for pinholes, paying attention to the bends in the headers using a flash light and mirror.
Retorque the spark plugs.
If the above inspection did not isolate the discrepancy, use the “mechanics stethoscope” and probe the fuel injectors and rocker cover for noise while the engine is running at idle.
Good luck,
Kevin
Pro
Joined: Jan 2006
Posts: 606
Likes: 0
From: Wernersville PA
Originally Posted by 69
Hello,
You should do some basic troubleshooting in the following areas.
Note, If you can locate a “mechanics stethoscope, this will greatly aid your chance of locating the noise.
Check the following areas;
Header flange to head bolts, look for carbon traces (exhaust leaks) retorque these bolts, possible blown header to head flange gasket.
Inspect the header collector (under car) for carbon traces (exhaust leaks). Retorque these bolts, possible blown header collector flange gasket.
Inspect the header for pinholes, paying attention to the bends in the headers using a flash light and mirror.
Retorque the spark plugs.
If the above inspection did not isolate the discrepancy, use the “mechanics stethoscope” and probe the fuel injectors and rocker cover for noise while the engine is running at idle.
Good luck,
Kevin
You should do some basic troubleshooting in the following areas.
Note, If you can locate a “mechanics stethoscope, this will greatly aid your chance of locating the noise.
Check the following areas;
Header flange to head bolts, look for carbon traces (exhaust leaks) retorque these bolts, possible blown header to head flange gasket.
Inspect the header collector (under car) for carbon traces (exhaust leaks). Retorque these bolts, possible blown header collector flange gasket.
Inspect the header for pinholes, paying attention to the bends in the headers using a flash light and mirror.
Retorque the spark plugs.
If the above inspection did not isolate the discrepancy, use the “mechanics stethoscope” and probe the fuel injectors and rocker cover for noise while the engine is running at idle.
Good luck,
Kevin
A mechanics stethescope is a great tool. You can find it at Sears or most auto shops. It sounds like it is in the valve train/header area, so pulling your valve cover and doing a visual might show you the problem. The ticking usually indicates a leak of some sort. I agree that checking your bolts and re-torquing them should be step one.
Pro
Joined: Jul 2004
Posts: 677
Likes: 1
From: Oviedo Florida
I'm in the process of fixing the exact same noise, but before we get to my diagnosis let's touch base on a couple of things:
Pull off both belts just to insure that the belts are ok, the pullied components are not making the noise, and to insure that you don't have an idler pulley problem. The car will be fine without the belts for long enough to figure that the noise is or is ot still there. Just watch that coolant temp. as the water pump will not be functional.
If the noise is still present then I believe you have a lifter problem...
My car experienced cam walk due to loosening cam bolts and it trashed a lifter/cam lobe.
The car ran fine, but this metallicy belt chirp noise. I went through everything and it turned out to be a lifter.
I wish you luck in your endeavors...
Pull off both belts just to insure that the belts are ok, the pullied components are not making the noise, and to insure that you don't have an idler pulley problem. The car will be fine without the belts for long enough to figure that the noise is or is ot still there. Just watch that coolant temp. as the water pump will not be functional.
If the noise is still present then I believe you have a lifter problem...
My car experienced cam walk due to loosening cam bolts and it trashed a lifter/cam lobe. The car ran fine, but this metallicy belt chirp noise. I went through everything and it turned out to be a lifter.
I wish you luck in your endeavors...
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Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,117
Likes: 1
From: El Paso TX
Originally Posted by wavrdr
I'm in the process of fixing the exact same noise, but before we get to my diagnosis let's touch base on a couple of things:
Pull off both belts just to insure that the belts are ok, the pullied components are not making the noise, and to insure that you don't have an idler pulley problem. The car will be fine without the belts for long enough to figure that the noise is or is ot still there. Just watch that coolant temp. as the water pump will not be functional.
If the noise is still present then I believe you have a lifter problem... My car experienced cam walk due to loosening cam bolts and it trashed a lifter/cam lobe.
The car ran fine, but this metallicy belt chirp noise. I went through everything and it turned out to be a lifter.
I wish you luck in your endeavors...
Pull off both belts just to insure that the belts are ok, the pullied components are not making the noise, and to insure that you don't have an idler pulley problem. The car will be fine without the belts for long enough to figure that the noise is or is ot still there. Just watch that coolant temp. as the water pump will not be functional.
If the noise is still present then I believe you have a lifter problem...
My car experienced cam walk due to loosening cam bolts and it trashed a lifter/cam lobe. The car ran fine, but this metallicy belt chirp noise. I went through everything and it turned out to be a lifter.
I wish you luck in your endeavors...
I've never removed the belts before. How easy is it and what tools are required?
Thanks wvrdr!
Matt
Pro
Joined: Jul 2004
Posts: 677
Likes: 1
From: Oviedo Florida
I'm not sure on the road trip part....you may want to call the shop that you're driving to and get their suggestion. The more the engine runs, the more damage you will incur. If the lifter is sideways, or has some wear, it could potentially wipe out the cam/cam lobes.
As far as the belts are concerned I believe you need a 15mm wrench for the front belt and possibly the same for the AC belt. Make sure you do this before deiciding that it is a lifter.
It just seems funny that you recently had a h/c package installed and now you're having problems with a part they reinstalled....
Check the belts!
As far as the belts are concerned I believe you need a 15mm wrench for the front belt and possibly the same for the AC belt. Make sure you do this before deiciding that it is a lifter.
It just seems funny that you recently had a h/c package installed and now you're having problems with a part they reinstalled....
Check the belts!