pinging should i run spout out??

[BadAndy]

has anyone tried running timming locked spout out to help the 94-95 pining problem???

 

[bimmertech]

i think that would be counter productive for a n/a motor.

i would try and fix the problem first, like clean the maf, new o2's, etc.....

what is your base timing at?

 

[BadAndy]

9

 

[bimmertech]

9

sounds like a dirty maf to me.

i used to run 8 with 93 and pinged. cleaned maf 12 deg with 87 and no ping.

now i run 16 with 91 and no ping.

 

[blksn955.o]

Do you have the EGR hooked up still?

Have you checked the harm. ball. to make sure it is not spun/going out.

 

[BadAndy]

Do you have the EGR hooked up still?

Have you checked the harm. ball. to make sure it is not spun/going out.

the harmonic ballancer is fine i took it off and compared it to a new one

 

[mo_dingo]

the harmonic ballancer is fine i took it off and compared it to a new one

Have you cleaned your MAF & IAT sensor?

Does it ping at part throttle, WOT or both??
Scott

 

[BadAndy]

it does-not ping now but if i advance it to 11 it will at PART throttle, the mass air is clean but i have not cleaned the iac but it idles fine

the pinning happens more from a load on the motor and timming at 11 or more

 

[blksn955.o]

Do you have the EGR tube un-done?

IF so that is your issue, at part load cruise the EGR timing tables hit 40+*.

 

[BadAndy]

Do you have the EGR tube un-done?

IF so that is your issue, at part load cruise the EGR timing tables hit 40+*.

the car still has the stock H pipe on it, only mod is cat back flows

motor untouched

 

[mo_dingo]

it does-not ping now but if i advance it to 11 it will at PART throttle, the mass air is clean but i have not cleaned the iac but it idles fine

the pinning happens more from a load on the motor and timming at 11 or more

Did you reset the computer after you cleaned it?? If not, definately do so. The KAM needs to be cleared after any sensor changes are made, so the computer can start from scratch, learning the new sensor. (disconnect neg terminal from battery and hold brake pedal for 30 seconds).

Definately clean the IAT and make sure it's indexed, so air can flow through the element, not the plastic u-shaped thing that partially covers the sensor.

If it's pinging at part throttle, and resetting the KAM does not work, you likely have a O2 problem. I would take the torch to them and see if it helps. As O2's age, the actual a/f ratio gets leaner and leaner, even though the comp thinks it's fine.

The EGR could be another thing to check out. It works only at part throttle.
Scott
Scott