Light engine pinging/knock

bigrob126 · 08-17-2011, 10:08 AM

I live in Vegas, where you all know its real hot all summer long. Anyway I have noticed under light accel,when I have driven for a while and I'm sure the engine and engine bay are red hot, a little pinging. I am at 12000 miles and I use Shell super and use Seafoam every oil change in the tank. Nothing should be dirty. Is anyone else experiencing this? I am thinking from the extreme heat some predetination? Under hard accel its fine though!

wstar · 08-17-2011, 10:44 AM

Most likely it's just normal valvetrain noise rather than true knock, but who knows without hearing. Also, if I were you I wouldn't be putting Seafoam (or anything else) into your gas with any regularity. Just use a quality gasoline like Chevron (or if you have crappier gas, maybe once in a blue moon run a bottle of Techron through).

fuct · 08-17-2011, 02:03 PM

waaaaiiiiit you use seafoam every time you change the oil???? i dont think thats advisable.

bigrob126 · 08-17-2011, 02:26 PM

I don't use it EVERY all change, more like here an there. Anyway, I used chevron this last fill up and I don't like the way the car runs. Feels better with shell. I'm sure its from the extreme temps under the hold, was just lookin to see if anyone else has had this. And this is definitely a ping, not valve train noise

Chan Chee Hoe · 08-20-2011, 07:49 AM

Did you did an "Uprev" E.C.U. reflash.?I did mine,at first,the tuner put it too lean[12.5:1],i also felt engine no power & noisy,put it back to [11.0:1],everything go fine again,the weather in S'pore is all time warm.

08-17-2011, 10:08 AM	#1 (permalink)
bigrob126 Base Member Join Date: Jan 2011 Location: Las Vegas NV Posts: 134 Drives: 2009 370Z Sport Auto Rep Power: 14	Light engine pinging/knock I live in Vegas, where you all know its real hot all summer long. Anyway I have noticed under light accel,when I have driven for a while and I'm sure the engine and engine bay are red hot, a little pinging. I am at 12000 miles and I use Shell super and use Seafoam every oil change in the tank. Nothing should be dirty. Is anyone else experiencing this? I am thinking from the extreme heat some predetination? Under hard accel its fine though! __________________ Rob

08-17-2011, 10:44 AM	#2 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	Most likely it's just normal valvetrain noise rather than true knock, but who knows without hearing. Also, if I were you I wouldn't be putting Seafoam (or anything else) into your gas with any regularity. Just use a quality gasoline like Chevron (or if you have crappier gas, maybe once in a blue moon run a bottle of Techron through). __________________ 7AT Track Car! Journal thread / Car setup details

08-17-2011, 02:26 PM	#4 (permalink)
bigrob126 Base Member Join Date: Jan 2011 Location: Las Vegas NV Posts: 134 Drives: 2009 370Z Sport Auto Rep Power: 14	I don't use it EVERY all change, more like here an there. Anyway, I used chevron this last fill up and I don't like the way the car runs. Feels better with shell. I'm sure its from the extreme temps under the hold, was just lookin to see if anyone else has had this. And this is definitely a ping, not valve train noise __________________ Rob

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08-17-2011, 02:03 PM	#3 (permalink)
fuct A True Z Fanatic Join Date: May 2009 Location: Sugar Land Posts: 3,692 Drives: 97' Ranger :) Rep Power: 24	waaaaiiiiit you use seafoam every time you change the oil???? i dont think thats advisable.

08-20-2011, 07:49 AM	#5 (permalink)
Chan Chee Hoe Track Member Join Date: Mar 2009 Location: Singapore Posts: 861 Drives: 370z,Yellow,7sp A Rep Power: 17	Did you did an "Uprev" E.C.U. reflash.?I did mine,at first,the tuner put it too lean[12.5:1],i also felt engine no power & noisy,put it back to [11.0:1],everything go fine again,the weather in S'pore is all time warm.