rattle, pre ignition, tranny/gear?
Just noticed a rattle today, here is the best I can do to describe it.
1) Give the car a little load, say up hill in a low gear.
2 )Going 45 in 6th gear and letting off the gas. Once the rattle occurs give it any amount of gas and it stops. Also depressing the clutch stops it. It sounds a bit like pre ignition, maybe it is :shrug:
I believe the previous owner used 93 octane but I have researched this over and over. With ECU's today it really does not matter, the car will find the best combination of mixtures and use it. Yes, no? Maybe the car just need to adapt to lower octane?