Leaking Injector(s)?
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Senior User
Joined: Jun 2004
Posts: 216
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From: Gig Harbor, WA
Leaking Injector(s)?
First, I apologize if this has been covered before. I did a search and came up with several thousand responses, so either this is a real problem or my search capabilities are no better than my mechanical skills. So, to the problem. I just changed my oil, 88,000 (6,000 on the oil) and sent off a sample to Blackstone. It came back with 2% fuel content which is literally twice the normal amount. They indicated i should be very concerned that one or more of the injectors maybe leaking. I did a coolant flush during this cycle and let it idle quite a bit while doing so. Is there a way to check the injectors without tearing the top of the motor apart? Thanks, gm. 
PS-The motor runs great!
PS-The motor runs great!
Hotshot
Joined: Apr 2010
Posts: 19,072
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From: Saratoga Springs,UT
I was getting diesel in my oil at the rate of 1 qt every two weeks I didnt test anything beccause I didnt know how to but I rering all injectors and problem solved
but to test I think you need to do an injector leak down test Im not shure but think you put a gauge on the fuel pressure test port and see if it will hold pressure for awhile as it sits
I wouldnt put off to long as the injector/s that are leaking may become damaged from low fuel pressure
but to test I think you need to do an injector leak down test Im not shure but think you put a gauge on the fuel pressure test port and see if it will hold pressure for awhile as it sits
I wouldnt put off to long as the injector/s that are leaking may become damaged from low fuel pressure
Fleet Owner
Joined: Nov 2003
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Personally, I don't think 2% fuel dilution is that bad. I don't mind being corrected if I am wrong, but a certain amount is inevitable.
Also, I wouldn't exactly trust the Blackstone fuel dilution analysis. They estimate it from the flash point analysis. Polaris does it by GC analysis.
Also, I wouldn't exactly trust the Blackstone fuel dilution analysis. They estimate it from the flash point analysis. Polaris does it by GC analysis.
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Senior User
Joined: Jun 2004
Posts: 216
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From: Gig Harbor, WA
Thanks, guys. I just changed filters (I know, but I feel better doing every 2K) at 90K and sent off another sample. Hopefully, it is just an anomaly? We'll see. One question, does idling or commuter traffic contribute to this issue? I wouldn't really think so, but.. 
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