If it's running fine ,starts easily , does not blow heaps of black smoke , and no black tar around the injectors DO NOT TOUCH as the repair bill to remove and install new injectors will cost you more than the car is worth unless you can do yourself .Injectors are around $540 each x 5 plus minimum of 10 hrs labour -one place quoted $4500 to remove engine as they would not give warranty unless it was removed and injector bores cleaned ,cut the seat and hold down clamp bolt hole helicoiled .I did a leak test and luckily it was #3 injector - had a spare that was cleaned ,retipped and tested for $105 and charged him $200 labour .If you need any info of leak down test -let me know as I have a few photos and posted on this site a couple of months ago.
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