On Sunday, January 31, 1999 11:59:01 PM, THOMAS R SMITH wrote:
>Anyway the car runs great in all rpm ranges except for idle. It idles
>somewhat uneven and
>stumbles once in a while like it is missing. Perhaps that is from the
>higher lift and duration
>of the 264 cams, but I still would swear it is missing.
A slightly "uneven" idle is typical of cars with non-stock cams. Generally,
though, it will be sort of rhythmic. Kind of hard to describe, but if it
sounds like it's missing, it might actually be.
>I did the spray bottle mist test, where I took a spraybottle with water and
>wires in the dark in my garage (While the car was running). Anyway I did
>one or two little spark from where the spark plug wires attach to the coils
>or coil packs.
>So I don't think that is the problem, (SNIP)
Sparks from wet plug wires=bad plug wires! You shouldn't see any sparking
from your plug wires, either at the end or along the length of them.
Personally, I don't think there's much to be gained by buying the various
aftermarket plug wires, but you don't want to buy the generic Pep Boys brand
either. I'd stick with the OEM equivalent myself. You may want to replace
the plugs too, if they're near the replacement interval. Replacing mine
solved an irregular idle my (totally stock) engine had. Until you replace
the wires, you'll never be able to eliminate that as a suspect in your
problem, so definitely start there. Since your car's a '98, you may be able
to get the dealer to replace them under warranty (if you're still under the
b-to-b). Your engine work may complicate this, however.
>PS: Also my gas mileage hasn't been very good even at highway speeds. About
>15-16 miles per gallon City and 22.5 Highway . Before I was getting
>around 25-26 Miles a gallon.
I tend to average around 23mpg for a tank of gas. I'd expect some loss of
mileage as a result of the cams, but I'm just making a common sense guess.
If you're replacing cams, fuel economy should not be your primary concern!
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