Pinging question

[Brad04Mamba]

I am experiencing alot of pinging on excelleration. I use the best 91 octane gas I can find here in Cali but it is getting bad. I know this can damage the engine, what can I do?

Brad

 

[Snake Bitten]

Octane Booster...NOS Brand will not clog you injectors, but is rather expensive...about $10...Hopefully others can recommend a less expensive brand that is safe for our V10's. Xylene or toulene straight up will also boost octane.

 

[Greg W]

I experienced the same pinging, especially after California lowered the octance from 93, I think, to 91. I sometimes use a gallon of racing gas, 110 octane, to a tank of premium. It definitely helps.

Greg

 

[Eddie N]

using some race gas to boost the octane is only a temporary solution to something that can be more serious.. how long have you been pinging? a few tanks, or did it just start recently?

there was another member here a little while back who was having some pinging issues in his gts (brad manhattan beach w/ a 96-97 GTS).. i think the end result was an arrow rebuild...

do you have the extended warranty?

- eddie -

 

[red98GTS]

Brad....pete here....you might try searching and enter the word, "pinging". Some interesting posts can be found there. I didn't try "detonation", but as you know, it's the same deal. Hope this helps you out. pete the xgg

 

[GTS Bruce]

Just hope its only the gas.That's easy to fix.Could be a lot worse as in oil or whatnot being sucked into the combustion chamber.The easy fix on a simple engine if not going to an octane booster is to lower engine running temp with a lower temp thermostat.MY guess is that a 180 deg t-stat would do the trick.Too bad its such a pia to change out on a viper or I would already have one. Bruce

 

[gtsviper]

I had the problem on my 96 GTS at WOT. Carbon builds up on the head and causes detonation. I had the heads pulled and cleaned under warranty. Continued to occur and eventually a Tech determined that there was a high point on top of the head that was causing the carbon to build up. Don't think that is too likely to happen but you might check for carbon.