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#1
11-19-2002, 12:01 AM
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Bad Injector?
i have a 1993 300D...I recently noticed an almost hissing like tapping when the car was at idle...i was told by a mechanic friend that one of the injectors was bad? he said it was losing compression...
my questions are...would this cause a reduction of mileage to the car...i am getting about 320 miles to the tank...that just seems embarrissing for a diesel... also...is this an easy fix? can a DIY guy like me replace the bad injector fairly easily...if not...how much am i looking to spend to the part and labor? thanks in advance... Mario 
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#2
11-19-2002, 12:28 PM
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Other than the hissing and tapping, does the car run smoothly?
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#3
11-19-2002, 01:54 PM
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There are seals beneath the injectors that seal it to the prechamber. It's possible that one was not replaced when a previous mechanic pulled the injector. You can hold you hand over each injector with the engine running, you may feel a puff of air above the faulty one. I'd check for a missing (or backwards) seal before replacing injectors. I seriously doubt the injectors are bad though. It's not that hard for a DIY, they just unscrew (need deep 27mm socket that clears the return line nipples).
And yes, your MPG is very low. You should be getting 28-34mpg, which is 400-600 miles per tank. Good luck,
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#4
11-19-2002, 05:45 PM
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speedy300Dturbo...other than the hissing and tapping, it runs great...
gsxr...would the problem you mentioned be the cause of the low MPG? thanks in advance... Mario
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#5
11-19-2002, 05:53 PM
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Yes, it could be the cause of low MPG. There are a bunch of other things that can cause low MPG as well, I'd check your air filter & tire pressure if you haven't done so recently, for starters...
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