jyeung528

can you elaborate more on this "melting the piston"?

2k5_nfr_s2k

A failed injector will usually just cause the motor to buck hard and not run properly. You will definitely be able to tell and usually get a lean cut before any serious load is applied on the motor, but it shouldn't cause a piston to melt.

JDMilanoEG

I was driving pretty spirited down a mojor highway late at night, With no other traffic around. And as I hit 6th gear and accelerated, the car stayed steady. It didnt go any faster it just stayed at a consistant speed. I let off, Drove it home without any rough idle or noise. Parked it and heard it start piston slapping. Pulled the head a few days later and had a scored cylinder wall in cylinder 1.

AusS2000

Was the piston melted? That is what you said isn't it?

This sounds a lot more like oil starvation than a lean condition caused by a faulty injector.

JDMilanoEG

The piston expanded, So if thats not considered melting, I guess it just deformed. It expanded enough to score both sides of the cylinder wall. Heres a few pics of what I found when I pulled the head.

Notice the problem? lol.


Good....


Not so good....



Good...


Not so good....


And finally....my solution to the problem (Besides switching to the updated banjo bolts)

jyeung528

damn, those new pistons look nice!

JDMilanoEG

Thanks, Im hoping to get the motor back in the car this weekend. After only 5 months....lol.