Sputters at WOT

[PC COBRA]

After i washed my car about a month ago, the car will sputter when i WOT and the boost hits 10-14 psi.

I have replace the plugs, fuel filter, PPRV delete, coil rubber boots.
The rubber boots had white residue on the tip of the boots.
I have cleaned the MAF

The car was tunned last year, and i have been washing the engine for 2 years
This issue has come up after the last 2 engine washes and i would clean the MAF sensor and it would last 2-3 days and back to normal.

 

[KILRSVT]

recheck your plugs.what is your gap? and check to see if there is any white residue on the coils as well..you might have a bad coil...replacing the boot will not repair it. check for any corrosion around your maf connectors....

 

[03cobra#694]

I`d check the wells/cop`s for water/corrosion.

 

[PC COBRA]

I bought (2) new coils and meaured to the original coils and all the coils are good.

There is some slight corrsion to the bottom of the wells, i will try to clean today.

I put new plugs last week and have a gap of 0.034
I measured the alternator and is measuring very low, but no code and battery is measuring at 12.56 volts

 

[PowerWheels]

Sounds like what I'm experiencing now. You can feel a loss of power like it's missing a spark if I'm near WOT or at WOT. I'm fixing to change plugs and boots.

Subscribing!

 

[viperstang]

wow same thing happen to me last night. puled the plugs and found number 3 blown out. going to change my plugs and see what happens. what about the white residue? what does it mean if its pressent?

 

[PowerWheels]

I only seem to notice the power loss if the engine is warmed up, if it's cool it's not present.