car 1994 integra LS automatic completely stock

one day my sis's stalled all of the sudden while doing about 40mph
so i decided to check all the small things first (sparkplugs/wires/etc)
and the sparkplugs were rusted!!!! i thought it was just old so i got a new set..and i checked it again after about 2 weeks..its starting to get a bit rusty...what is the cause of this? motor has about 140k...time for a rebuild? haha any info would be great

TIA

 

might be time for a coolant flush/block flush...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by teg-your-it &raquo;</TD></TR><TR><TD CLASS="quote">might be time for a coolant flush/block flush...</TD></TR></TABLE>

care to explain what it might have to do with it? thanks!!!

 

To get rust you obviously need a source of moisture. Normally, the plugs would get hot and dry out any moisture present in the plug tubes. Does she do a lot of short trip driving in high humidity conditions? What brand of plugs did you use?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Perfectionist &raquo;</TD></TR><TR><TD CLASS="quote">To get rust you obviously need a source of moisture. Normally, the plugs would get hot and dry out any moisture present in the plug tubes. Does she do a lot of short trip driving in high humidity conditions? What brand of plugs did you use?</TD></TR></TABLE>

most of her trips are atlesat 5 miles to about 15 miles (home to school to etc)
yeah i can't figure out what the source of moisture is.
she doesn't drive the car hard at all.
bad rings? just a guess

 

what if.....the four sparkplug seals (on the valve cover) are bad...so moisture gets in easily? another dumb guess

 

In most cases those seals leak oil when they're bad. Overall, I wouldn't worry about 'rusty' plugs. There is a whole lot of material there to disintegrate before it would be any sort of problem.

 

Are you talking about rust in "green" color copper rust or just getting white a bit. Copper plug oxidize in part of their normal operations and they will be fine for a long time.

I would check other stuff like distributor cap and rotor, alternator, battery, etc. Check the voltage when the car is idling and it should be 14V or so.

 

I suppose you should also clarify what part of the plug you are refering to. Is it the upper body, or the electrode end?