Pinging or knocking when hot

[Miraphone186]

I just put in Shell 89 and a couple bottles of that techron stuff, I'll see how it runs tonight on my way home. I have a sneaking suspicion that it's carbon that's to blame because I mostly do city driving anyways.

[joe]

Sheesh man, quit looking for silver bullets and throw a timing light on it. 5 min job.

[Miraphone186]

I would if I had one. I'll go buy one right now.

[joe]

Not trying to be an asshat but guess so far you don't even do your own tune ups. If you plan to in the future and maintain your vehicle a light should be in your toolbox. Kinda basic tool. If maint isn't your thing, pay a shop or get a neighbor to help. I'm assuming since you're asking for help here you plan to fix it rather than pay a shop so you need some minimum basic tools. Trust me you'll use them again. Again not trying to be a Richard Head here but when diagnosing a perceived problem always check the obvious easy stuff before guessing and throwing money/parts at it. As you're learning fixing is the easy part, diagnostics is the hard part. You don't need $10,000 worth of trick Snap-on fluff, just basic tools. You'll figure it out in time keep at it.

[Miraphone186]

Not trying to be an asshat but guess so far you don't even do your own tune ups. If you plan to in the future and maintain your vehicle a light should be in your toolbox. Kinda basic tool. If maint isn't your thing, pay a shop or get a neighbor to help. I'm assuming since you're asking for help here you plan to fix it rather than pay a shop so you need some minimum basic tools. Trust me you'll use them again. Again not trying to be a Richard Head here but when diagnosing a perceived problem always check the obvious easy stuff before guessing and throwing money/parts at it. As you're learning fixing is the easy part, diagnostics is the hard part. You don't need $10,000 worth of trick Snap-on fluff, just basic tools. You'll figure it out in time keep at it.

7.5/10 somewhat patronizing but accurate. Mother nature decided to rain so I think it's gonna have to wait for today.

[Miraphone186]

Stopped raining, checked the timing and its something like 15 BTDC.

[serehill]

If it's carbon it's because it's running rich

All the carbon in the world won't make it ping.
Stated in this thread more than needed what it will be.

[Miraphone186]

I adjusted the timing to 10 BTDC as per oem specifications and took her on a freeway run again. I only got it to ping once right when I got off the freeway, maybe a small improvement? I've been trying to get it to ping stationary in gear so I can take a better video but no luck so far.

[vacaisle]

This indicates to me that you have other problems. You won't get it to ping standing still. It needs to be under load aka moving. I'd check the egr operation. Whats the temperature after a ride on the highway? Also if you have a vacuum pump you should check your vacuum advance. Read this

http://www.ifsja.org/forums/vb/showthread.php?t=84586

Do a search for ping on this site and you'll see all the causes and then address each one.

[babywag]

Not entirely true.
If you have bad gas it will ping in gear standing still(foot on brake) putting a load on engine(reving engine).

[joe]

Stopped raining, checked the timing and its something like 15 BTDC.

At correct idle speed with vac hose plugged? If so it's way advanced.

[Rich88]

You didn't say as much but you imply that this is a sudden on-set. In which case maybe your vacuum line to the EGR came off or is cracked & leaking. Pinging caused by other reasons such as timing or carbon build-up don't just start all off a sudden.

And if you can diminish or eliminate the pinging by backing off on timing, all the more reason to suspect EGR not working. Thing is, backing off on timing will now lower performance.

[Cha05Twn07]

Were you able to get the pinging/knocking issue resolved?

[OutrageGIS]

Low oil

You probably checked this, but if your oil level was really low, a sharp turn could send the oil to one side of the pan letting the oil pickup draw a bit of air (instant valve clatter) and then be re-submerged when the oil settles in the pan after the turn / acceleration. This could happen fast enough to barely affect the pressure indicator. Seen this before on a really leaky engine.