Injector - Miss Fire
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From: Rock Hill, SC
Injector - Miss Fire
So I just got back from towing a skid steer to Joplin, MO from Rock Hill, SC. I left Monday last week and got home Sunday night late. Anyways, a couple nights prior to leaving, I put in a new injector from Thoroughbred Diesel. I ran a cylinder contribution test which said #8 was missing - therefore I replaced it. When I opened the box with the new injector, the copper washer on the tip was loose, so I tried to put it back on the best I could and put the injector in. I ran a couple of days before leaving for Joplin and she ran the best she has ever. No miss, best performance, great millage.
When I hit Nashville area on the way home, I noticed that I had a miss again. Now that I am home, I ran the contribution test again and still #8 is missing. I pulled #8 and have a blow by in the 1st and 2nd o-ring above the copper washer. I called Thoroughbred and they want me to send them the injector which means I will be dead in the water without a truck till they can get it back to me. Should I just go get a new o-ring kit from Ford that has the copper washer? Opinions???
When I hit Nashville area on the way home, I noticed that I had a miss again. Now that I am home, I ran the contribution test again and still #8 is missing. I pulled #8 and have a blow by in the 1st and 2nd o-ring above the copper washer. I called Thoroughbred and they want me to send them the injector which means I will be dead in the water without a truck till they can get it back to me. Should I just go get a new o-ring kit from Ford that has the copper washer? Opinions???
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From: Rock Hill, SC
aight...so I pulled the injector and no crack in the cup. Put new o-rings on her and wammo, she is running fine on that cylinder. I ran the cylinder contribution test and #4 and #6 are faulting/missing. ehh. The one I was having issues with was #8. I got tired of looking at her last night - but I will later this evening look at the connections for the wire harness, VC and UVCH to make sure no burnt connections.
Other than that, I did notice that it was throwing a CPS code. I have the black CPS and don't remember if this should be grey or the black one. The black one I am running on her is about a year old and is BWD brand from Advance Auto.
Other than that, I did notice that it was throwing a CPS code. I have the black CPS and don't remember if this should be grey or the black one. The black one I am running on her is about a year old and is BWD brand from Advance Auto.
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Senior User
Joined: May 2010
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From: Rock Hill, SC
Just kinda strange that miss fire on #8 is cleared up but miss on #4 and #6 came as a result.
Any advise on the CPS (Grey/Black)?
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farmert
1994.5 - 1997 7.3L Power Stroke Diesel
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Mar 15, 2014 08:25 AM
