Cold Engine Performance is terrible....any ideas?
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Junior User
Joined: May 2008
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OK guys, oil was changed to Rotella 15/40 and truck still runs like its on 2 cylinders when you first fire it up. It's been 60-70 when I start it up in the morning, and something is not right. Floor the gas.....NOTHING happens. I have to let the truck warm up for at least 15 mins before I can drive off. It's really bad.
I took it my friend that works on diesels, and he things the injectors are going bad. The engine has 180,000 miles on it, and I don't have any records as to what has been replaced or change.
Do bad injectors cause the truck to run badly when the engine is cold (regardless of outside temps)
I took it my friend that works on diesels, and he things the injectors are going bad. The engine has 180,000 miles on it, and I don't have any records as to what has been replaced or change.
Do bad injectors cause the truck to run badly when the engine is cold (regardless of outside temps)
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Junior User
Joined: May 2008
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THe idle is rough for a minute, but I literally cannot accelerate the truck at all for at least 10-12 mins. Once the start is started, if I floor the accelerator, NOTHING happens. After about 7-8mins, it gets a little bit better, but still undrivable for least 10-15mins.
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
You probably have a sensor acting up. You really need to get it on a scanner and check things like ICP, IPR, EOT, etc. while the truck is cold. Otherwise you'll just start throwing money at parts as a guess.
Hotshot
Joined: Dec 2006
Posts: 14,069
Likes: 17
From: Melbourne, Ky
I'd have to agree with Chris (F350-6) that you need to take it somewhere and have a scanner hooked to it. Pull the codes and take it from there. It could be as simple as a sensor that's gone bad. I believe it's electrical, but couldn't tell you where. They will probably have to let it sit overnite to cool down to get the truck to act up and see what's not working properly.
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