Fuel in muffler after cold start - Diesel Forum - TheDieselStop.com
'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

 
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post #1 of 2 (permalink) Old 12-05-2018, 05:13 PM Thread Starter
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Fuel in muffler after cold start

This morning I went out to start the truck for work and everything was fine,I let the glow plugs cycle for about 45 seconds it fired right up and went back in for a while, this afternoon I came home and noticed exactly where my exhaust sits I have a line of fuel in the snow heaviest where the muffler is and where there are joints in the exhaust... I've got a functional gpr and 8 new glow plugs as of a couple months ago. I've never had this happen before but am curious why you guys might think this happened. The truck did sit for 5 days without starting but was plugged in during that time. Temp was in the 20s this morning
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post #2 of 2 (permalink) Old 12-05-2018, 05:49 PM
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Unburned fuel has to be a result of non-combustion. If the glow plugs are truly working, then the only explanation is the 20-degree air combined with slow cranking speed and/or low compression didn't allow fuel to ignite in one or more cylinders until the engine warmed up.

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  Diesel Forum - TheDieselStop.com > 1999-2007 Ford Super Duties > '99 & up 7.3L Power Stroke Engine and Drivetrain

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