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pull a spark plug and smooth the idle 700

posted by  Wolfie on  Wed Sep 25 06:08 CST 2002
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i have a 85-86 760GLE V6 it's got a loud tapping on the #4 or #5 cyl, this morning after about a 100 miles drive last night, i went out and started her up and she was idleing like cr@p, and the tach was swinging from 500 (allmost dieing up to a thousand or 1200).
so i figured i'd check to see if i had a lose plug and coulden't find any, so i pulled the #4 cyl spark plug, and started it back up,, it idled alot smother, could hear it missing but the engine wasen't sloping around like a dieing fish,
any body have any ideas?
the plugs are good,
the plug wires are good
all have good spark
or did (havent checked this morning)
i could use some help,
also unpluging the O2 sensor had no effect
althow unpluging a water temp sensor made it idle at 2000 rpm's
i need help, should i just sell the brick?



things i have allready replaced in the past 3 months:
power steering hose
both engine mounts
both fuel pumps
fuel filter
water pump
all fuel injectors
air filter
oil
oil filter
tires
light bulbs






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