2003 7.3 no cold start
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2003 7.3 no cold start
2003 7.3L f-350 crew cab long bed 6-speed manual
truck is all stock except for kn air filter
truck will not start under 40 degrees unless plugged in for 30 min to 1 hour
have checked that glow plug relay is working
i have 12v at valve cover wiring harness plugs
all glow plugs checked to around .6 ohms resistance
have tried cycling glow plug multiple times will not start under 40 degrees after plugged in for awhile starts right up and runs fine no start problems in warm weather
don't know if related but there is an oil leak around a line out of the passenger side of the oil pan i have to add about 1 quart of oil every 3000 miles
truck is all stock except for kn air filter
truck will not start under 40 degrees unless plugged in for 30 min to 1 hour
have checked that glow plug relay is working
i have 12v at valve cover wiring harness plugs
all glow plugs checked to around .6 ohms resistance
have tried cycling glow plug multiple times will not start under 40 degrees after plugged in for awhile starts right up and runs fine no start problems in warm weather
don't know if related but there is an oil leak around a line out of the passenger side of the oil pan i have to add about 1 quart of oil every 3000 miles
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
Welcome to FTE hillbilly102. How long has this been going on? I'd suggest finding out how long the GPR is sending power to the glow plugs (with a meter), then instead of cycling the glow plugs, just leave the key on (ignore the wait to start light) until 3 seconds before the GPR will shut off and try to start it then. The white smoke you're describing is normal.
How long have you been running the K&N filter? Have you maintained it religiously? There have been many instances here where the K&N has allowed too much dirt to be ingested by the engine resulting in either a dusted turbo wheel, or worse, a dusted engine. It would be a good idea to take the top cover off the filter housing and inspect the filter lid and the tube going back to the turbo. If you see ANY signs of dirt or dust, change the filter. Then pull the intake tube off the turbo and inspect the wheel for any signs of dusting. If you really like the K&N that's fine, but at least check and make sure it's not damaging your engine. If all looks good, feel free to ignore everything I've said.
How long have you been running the K&N filter? Have you maintained it religiously? There have been many instances here where the K&N has allowed too much dirt to be ingested by the engine resulting in either a dusted turbo wheel, or worse, a dusted engine. It would be a good idea to take the top cover off the filter housing and inspect the filter lid and the tube going back to the turbo. If you see ANY signs of dirt or dust, change the filter. Then pull the intake tube off the turbo and inspect the wheel for any signs of dusting. If you really like the K&N that's fine, but at least check and make sure it's not damaging your engine. If all looks good, feel free to ignore everything I've said.
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i have owned the truck 18 months it has done it at least that long
i run k&n filters on my truck and my harley never checked the turbo tube but i clean and oil every few hundred miles even less if it has been off highway
i run k&n filters on my truck and my harley never checked the turbo tube but i clean and oil every few hundred miles even less if it has been off highway
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Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
They work great on your harley, and other gas motors. They just don't do as well in front of a turbo wheel that spins up to 130,000 rpm's. The turbo builds boost pressure and any dirt that gets sucked into a wheel moving that fast causes problems. Checking the intake tube and wheel won't cost you anything but a little time. Ignoring a possible problem can cost you a $10,000 motor. It won't hurt to check. There has been lots of discussion on intake systems, efficiency and CFM capabilities. If you search, you'll probably find more on this subject than you would care to read. Here's a comparison done at a lab click me Note the filter efficiency and the dirt passed from the K&N in front of a diesel turbo.
Check things out. If it looks good, keep the K&N on the diesel.
Check things out. If it looks good, keep the K&N on the diesel.
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