Melted sparkplug... Not enough fuel?

[nfernotalon]

I melted my number 2 cylinder plug while at full throttle.. My guess is that im not gettin enough fuel. Id like other opinions. 92 tsi bonestock except manual boost controller and tubular manifold, stock boost round 13psi.

 

[tkelly27]

Melted? What kind of fuel are you running? Plugs? Low octane fuel and/or platinum plugs are bad news.

I've been up to 16 with stock plugs on 87 octane with a head having a smaller combustion chamber (higher compression). Playing with fire? Yes. Did it survive? Yes, long enough for the timing belt to give out before there was anything done to the plugs. I'll probably wire wheel those plugs and put them back in the engine when I get a new head.

It could also be that that injector is not functioning properly. I'm not sure how you'd figure that out.

 

[nfernotalon]

92 octane with the densos nothing special

 

[dsmpokolm]

"Signs of the spark plug being hot or blistered and/or melted center and ground electrodes are indications of initial preignition. Check that the correct heat range spark plug is being used, assure ignition timing and air fuel mixture are appropriate, assure entire ignition system is functional and check its specifications. Routing of spark plug wires on some engines can contribute to cross induction which will lead to pre-ignition. Excessive carbon deposits in the combustion chamber may contribute as well."

 

[nfernotalon]

My car has been misfiring for a while now, til I get enough money get a new ignition coil, maybe that had to do with it too?

 

[absolute_DSM]

Use NGKs.

 

[nfernotalon]

Is it a good idea to do the fuel pump rewire with the stock pump? The plug melting has me paranoid now, i will get the ngk's tomorrow, thanks for the help guys.