Diesel Fuel in Coolant - TheDieselGarage.com
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post #1 of 13 (permalink) Old 09-10-2009, 02:45 PM Thread Starter
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Diesel Fuel in Coolant

Why is there fuel in my coolant resevoir??

2005 FORD F-350 6.0 Power Stroke

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Last edited by vmantunes; 09-10-2009 at 02:51 PM.
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post #2 of 13 (permalink) Old 09-10-2009, 02:54 PM
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cracked head!

2004 F350 CC DRW King Ranch
X-3 tunes by DJ,QT,GH,ID,Gyphon FICM tuner,head studs,II Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,Snow Perf stage II,EGR delete,AD2,4" turbo back straight pipe,K&N intake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
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post #3 of 13 (permalink) Old 09-10-2009, 02:57 PM Thread Starter
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What else might be causing it???

cracked head... or???
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post #4 of 13 (permalink) Old 09-10-2009, 03:00 PM
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as far as I know only a cracked head will cause this. maybe other members will chime in with any other info.

2004 F350 CC DRW King Ranch
X-3 tunes by DJ,QT,GH,ID,Gyphon FICM tuner,head studs,II Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,Snow Perf stage II,EGR delete,AD2,4" turbo back straight pipe,K&N intake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB
Thanks to:JASONS REPAIR AND PERFORMANCE-TELFORD,PA.

"Are diesel pickups hot rods? Yes,they are-perhaps the most versatile hot rods ever made"---Diesel Power Magazine
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post #5 of 13 (permalink) Old 09-10-2009, 03:33 PM
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Maybe a bad injector and a blown HG? How does it run? Smoky? Low power? Any other symptoms other than you can see fuel floating on the water in your coolant reservoir?

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post #6 of 13 (permalink) Old 09-10-2009, 03:46 PM Thread Starter
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No problems... no smoke, no loss of power... just the fuel in the coolant resevoir which spews out when the engine is hot

what is an HG??
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post #7 of 13 (permalink) Old 09-10-2009, 04:05 PM
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head gasket. Sometimes, when an injector goes, it dribbles fuel out into the cylinder. If you have a bad head gasket, it could leak in there. But a cracked head is more likely. I guess, before we go nuts on this diagnosis, how much fuel is in there? And you are positive it is fuel?

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post #8 of 13 (permalink) Old 09-10-2009, 04:12 PM Thread Starter
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I am positive it is fuel...

at first i thought a fuel line was punctured (only because i was never able to open the coolant resevoir because the engine was always hot). the trucks been stopped for a few days so i finally got around to opening the cap.

I am positive it is fuel... how much fuel?? i don't know... probably more than a 50/50 mix in the resevoir itself, but its hard to say.
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post #9 of 13 (permalink) Old 09-10-2009, 06:33 PM
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A faulty injector cup could cause this.

2004 F-350 XLT SC 4x4: SCT, AFE stage II, autometer gauges(pyro, boost, tranny, fuel), edge insight, CFM large mouth intake elbow, spearco, snow performance water injection, 5" stacks, ARP's, fluidampr, hypermax fire rings, LIPD regulated return, FASS, fuelab, casserly 190's, 64/71/70 turbo(polished compressor housing)modded FICM(ID), Hellmann's sump, electirc fans
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post #10 of 13 (permalink) Old 09-10-2009, 06:51 PM
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Quote:
Originally Posted by strokin6L View Post
A faulty injector cup could cause this.
Yup, I wouldn't just jump to a crack headed, thats pretty expensive to fix, O-ring ain't nothing to fix, its like a 1-3 dollar part.

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