engine pinging

we have a 2008 tacoma prerunner V6 4.0 some times the engine pings when vehicle is under a load in 5 th speed we carry nill in the vehile it has a 5 speed auto trans. in june we put on a missing right side catconverter 2 piece cover we assume the vehicle was not pinging the past year, we use 87 oct good gas. We will be bring it to a dealer soon no signs or lights show up on the dash.appreciate any suggestions....Thanks Bill R..

 

Seafoam first, to remove deposits. Check/replace air filter. Replace plugs and coil boots, if approaching 100K miles.

 

High test is my thing helps keep the insides clean and no ping ever!!!

 

I remember a couple of weeks back someone also had that pinging issue.. He said that he used premium gasoline for a couple of tanks and it went away.

 

Yes some good gasoline would be the best thing to do.

 

Yeah I just heard a ping tonight too. Only when the AC was on and I was maintaining about 50 - 55 mph. I never heard this before, I either use Chevron or QT 87 Octane.... I went to Walmart for some Seafoam, but of course they were out, so I got the Lucas oil equivalent. Does it pay to use the 89 and higher octane?

 

It's a good regiment to do one good tank of 93 with like a additive like 104+ and then just drive like normal.

 

Thanks for the tip...

I filled up with 91 today. Havent used that 104+ additive since my 81 Camaro !!

 

'81 Camaro...

 

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