Quote:
Originally Posted by dbot
well a plugged cat, led to the engine burning oil which i should have caught but i headed out on a long road trip and seized the motor had a new one put in (not knowing the cat was plugged) and that one started burning oil, got another one put in got the cat fixed, and now this one cylinder 1 is hitting the spark plug ACTUALLY HITTING it is leaving pits on the spark plug. so now i have traded in the SER for a maxima I loved the SER when it ran right
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your plugged cat was due to something making the car run rich
I suspect that the timing was off way off
a plugged cat shouldnt make a car burn oil some other thing like blowby on the rings
these are not normal failures on these cars and you indeed had something break internaly and made it jump time
if you didnt have a check engine light I am very surprised and whoever checked it out for you only fixed the symptom (plugged cat) and not fix the problem (way off time)
now not to call BS but I kind of have to
a cylnder hitting a spark plug will not cause pits it will bend the crap out of the plug and leave holes in your piston and will send ceramic all over your engine
your pitting is not from contact you have a knock problem caused by improper time of the engine. which may sound like it hitting something
I suspect bad rings or improper timing without looking at it just future referance