I replaced the spark plugs earlier. The new spark plugs is NGK PFR6Q from Checkers. It is gap @ .032. The old spark plugs are the very cheap Autolite. The previous owner probably tried to save money, but it end up cause me a lot of trouble. The gap of Autolite plugs are more like .042. I drove it a couple blocks I installed the NGK, and it felt better.
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Or ngk brk8eix. Thats what im using and they are great.
I went with iridium's,and like the millage ,performance...
With the BKR5EKU plugs I got apx 27-29 mpg. All stock except for a neuspeed chip.
i use NGK G-power plugs in all my vehicles and they are the best ive found. they are about $2-3 tops and last forever, i have no complaints about the performance either.
I got on my last long trip 29-30 mpg doing 75-80 mph
OEM plugs which are NGK BKR5EKU used to get 26-28mpg @ 192k miles
after you get everything fixed don't run the oem plugs, they are too hot, if you want to run iridiums then get plugs that are 2 heat ranges colder and you'll be better off. you can also run copper plugs, i run ngk coppers that are 2 heat ranges colder and have had no issues at all.
I have ran BKR8EIX and i noticed no diff switching to bkr7e.
I changed over to the BKR7E model to see how they worked. I wasn't impressed because after that the RPMs on my tach wouldn't stay steady at idle.
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