Fuel Locking the cylinder - Ford Powerstroke Diesel Forum
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Old 03-12-2010, 05:14 PM
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Fuel Locking the cylinder

I have an 03 early build 6.0. It lost one injector at all times and was skipping on two when cold. I replaced all three injectors, 3-2 and 8. Started good. Ran about 4 miles and felt like it ran out of fuel. Stopped and restarted. Ran quarter of a mile and did the same thing. This time motor was locked solid. Pulled codes found 1 and 7 contrib codes. Assumed new injector on that side was at fault. Pulled injector, still solid pulled 1 and then 5, boom cloud of fuel.

Replaced #5

Ran for about two mins and same happened again. Pulled 1,3 and 5 no fuel. Pulled 7 no fuel obvious but lock gone. Got supplier to swap out new injectors. Refit same again !

Help what is going on. Going to replace 7 tommorow as a long shot. I changed all seals each refit. No fuel in oil or coolant. Does not lock till truck has ran for a couple of mins.

Found out the problem is an injector cup. I hope !

Last edited by sweetdeeillusion; 03-13-2010 at 05:37 PM. Reason: update
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Old 03-13-2010, 07:07 PM
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I would recheck all the injectors you replaced orignally, sounds like you cut an o-ring on one of them.
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Old 03-14-2010, 03:42 AM
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I pulled all the glow plugs and found # 8 was the culprit. Pulled the injector and found the bottom o ring blowing by. Replaced the o ring and with just fuel pump running it refilled the combustion chamber with fuel. Checked the injector,could not see any faults so changed the injector. Same thing, I am thinking the cup is some how damaged. I am not sure but think I can change the cup without pulling the head. Tried researching on line and found a guy selling a tool.

Makes sence of the way it failed. I torqued down the injector, but either I already had a faulty cup or I did not seat the injector somehow correctly. I can only assume that pulling the injectors on the RH side released enough compression to allow the starter to compress and blow out the fuel in #8. The fuel disposed by #5 was drop compared to the amount that came from #8.

Last edited by sweetdeeillusion; 03-14-2010 at 03:48 AM. Reason: UPDATE
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Old 03-14-2010, 03:59 PM
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does the truck start fine after it has set for a while & after a few minutes of idle starts smoking like crazy i helped mechanics change injectors on an 03 twice where i work same symptoms ended up being busted injector sleeve on the #5 cylinder
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Old 03-14-2010, 05:20 PM
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Exactly what it did. #8 for me tho.
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Old 03-15-2010, 03:47 PM
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the injector sleeve can be changed without pulling head the truck i was telling you about, we put two full sets of injectors in it before we found the busted sleeve
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Old 03-16-2010, 01:13 PM
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Made the extractor and installer today. Got the sleeves, as Ford calls them, today also, $2.16 for 4 ! Going to fit it tonite.
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Old 03-16-2010, 01:33 PM
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Quote:
Originally Posted by sweetdeeillusion View Post
Made the extractor and installer today. Got the sleeves, as Ford calls them, today also, $2.16 for 4 ! Going to fit it tonite.
subscribing, good luck I hope this fixes the problem!!
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