Engine failure poll?

[Y33TREKker]

Can someone describe the rod knock sound for me? I have a sound that reminds me of an exhaust leak, but I can only hear it INSIDE the cabin. The motor makes no such noise with the hood up. Also, the motor noise is very loud (like the sound of air blasting out of it) when at throttle. This is another thing that makes me believe there is an exhaust leak.

Might be that your EGR nut has come loose. The EGR valve is between the intake manifold and the firewall, and the nut threads UP into the bottom of the valve. There have even been cases where it's come all the way out of it's threads and has been found just spinning at the bottom of the EGR tube.

(Similarities from another thread) http://www.vehicross.info/forums/sho...hlight=egr+nut

Mine did the same thing a couple of years ago, resulting in a "dieseling" sound during acceleration. If that's the case, a simple re-tightening of the nut with a 22mm wrench should do the trick. At the time, I also applied some anti-sieze to the threads before tightening, and while I can't say for sure that the anti-sieze helped it stay tight, I do know that it hasn't happened again.

[boondocksaint]

Might be that your EGR nut has come loose. The EGR valve is between the intake manifold and the firewall, and the nut threads UP into the bottom of the valve. There have even been cases where it's come all the way out of it's threads and has been found just spinning at the bottom of the EGR tube.

(Similarities from another thread) http://www.vehicross.info/forums/sho...hlight=egr+nut

Mine did the same thing a couple of years ago, resulting in a "dieseling" sound during acceleration. If that's the case, a simple re-tightening of the nut with a 22mm wrench should do the trick. At the time, I also applied some anti-sieze to the threads before tightening, and while I can't say for sure that the anti-sieze helped it stay tight, I do know that it hasn't happened again.

Much obliged. I'll check it as soon as I can. It was about a quart low after about 1000 miles of driving. I know that's within spec to Isuzu, but not for me. I'll be replacing the PCV and EGR soon. Which part of the EGR tube should be replaced? I know there are two parts. I just don't know which one clogs. I've got my fingers crossed that this will eliminate the oil burning for a while.

[Y33TREKker]

...I'll be replacing the PCV and EGR soon. Which part of the EGR tube should be replaced? I know there are two parts. I just don't know which one clogs. I've got my fingers crossed that this will eliminate the oil burning for a while.

The tube itself is generally what can become clogged, but it doesn't necessarily need to be replaced. It can be taken off and cleaned too.

While I didn't read through the entire thing, this thread has a link that probably includes about everything you would ever need to know about the EGR valve: removal and re-installation, cleaning, etc.

http://www.vehicross.info/forums/sho...light=egr+tube

[boondocksaint]

The tube itself is generally what can become clogged, but it doesn't necessarily need to be replaced. It can be taken off and cleaned too.

While I didn't read through the entire thing, this thread has a link that probably includes about everything you would ever need to know about the EGR valve: removal and re-installation, cleaning, etc.

http://www.vehicross.info/forums/sho...light=egr+tube

Again, much obliged. I know little about these cars, but am not new to wrenching on cars overall. Had a Subaru Impreza WRX/STi for a few years and recently totaled my 99 E36 M3. Turning a wrench isn't new, but the first time doing things is still just as intimidating now as ever.

[Y33TREKker]

The good news is that at least there's some room to work on these things if necessary, where compared to some cars today...uhm yeah...not so much.

Doesn't sound like you'll have any problems with this one, but even if you do, there's usually someone hanging out around here to provide a quick answer if you need it.