Pinging Problem

**FormulaFiend** · 07-29-2006, 09:32 AM

Well I filled up on Wednesday night, only a half tank full of 91 octane and when I pulled it into the garage that night I noticed that my car was pinging pretty bad. SO I thought I had got a bad tank of gas. Next day, went and bought some octane booster, dropped it into the car, filled up at another QT and it's still pinging. Any other reasons why my car would ping so badly? It only pings after the car is up to temp. I dunno wtf is going on LoL Thanks!

**sunsetorangess** · 07-29-2006, 11:19 AM

throwing any codes? I would suggest stayin away from those stations, I mean if the prob wasnt there befor you filled up then i would say its the gas, runn it low then refill somewhere else and add a bottle of cleaner or booster too see if it fixes the issue.
J

**ocshaman** · 08-01-2006, 04:11 PM

find a newer top tier station and fill her up when your tank gets low. You could also try some Redline SI-1, Regane, or Techron with the new gas if you want to.

Or, you can buy some xylene or toluene and bump the octane you have in the tank until you burn it all out.

**jmhvenom** · 08-02-2006, 05:00 AM

You sure its gas? Check your filter if its K&N and clean the MAF.

**Breadfan** · 08-03-2006, 12:26 PM

Be careful with the lies written on the front of the octane booster. Read the back for the full story.

They often say they boost octane "A full point" or a few points, etc. What they don't tell you is that is only on one part of the octane equation.

When they actually do the math, you find out they're only raising the octane like .2 points. So...it's often negligible.

Just another "read the fine print" thing...

Is the car stock? Got a tune? I second checking the MAF and intake, could be bad gas too or carbon deposits - it's just odd that you noticed it after this fillup and never before.

You could try some Seafoam in the tank too to help burn off some more carbon. But I'd check out other things before driving much more with pinging...

maroonZ · 08-06-2006, 12:29 PM

I have had the same problem when I used 91. I have since cleaned my MAF (CRC Inductries Mass Air Flow Sensir Cleaner), changed plugs and wires and use Sonoco Ultra 94.

Sometimes I get pinging when the tank is below 5/8. It doesn't happen when full. Friggin strange!

but it happens. I think I may have a fuel pump/pickup problem.

Racetronix pump and wiring upgrade in the near future.

**ocshaman** · 08-06-2006, 04:31 PM

Originally Posted by Breadfan

Be careful with the lies written on the front of the octane booster. Read the back for the full story.

They often say they boost octane "A full point" or a few points, etc. What they don't tell you is that is only on one part of the octane equation.

When they actually do the math, you find out they're only raising the octane like .2 points. So...it's often negligible.

Just another "read the fine print" thing...

Xylene and Toluene are in the 114-116 octane area, so just figure out what octane you want to run, and then pour until satisfied.

**FormulaFiend** · 08-12-2006, 08:07 AM

I have a window motor out. So I'm gonna change my fuel filter, clean my MAF and change the window motor out. I'll let you know if cleaning the maf makes a diff. I tried the octane booster, gone through 2 tanks and 4 bottles of booster and no change. My car has been starting to surge at idle, kind of like a kicking feeling. No idea what it is. LoL I'll let you guys know.