6.0 Powerstroke
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5th Wheeling
Joined: May 2017
Posts: 38
Likes: 0
6.0 Powerstroke
Hello again thanks for the help on my coolant leak it was the j pipe. My truck has extended starts when hot and cold. But sometimes it cranks perfectly. Like went to eat and went back out and had extended start but say I went and cut it off for 5 or 10 mins it will fire right up. So I don’t think it is compression related. It has 55 psi of fuel pressure on the low side. It has had a hoop put in it don’t know when. I don’t know if it is ipr, icp, or injector related. Truck also seems low on power pulling a tandem axle trailer in the mountains but I think that might be crappy canned tunes. Thanks in advance for the help.
Fleet Mechanic
Joined: Jul 2013
Posts: 1,402
Likes: 114
From: Tuscaloosa, AL
A loose cam or crank sensor can give you long cranks one time and normal cranks the next. Mine did and the frequency of long cranks got more and more till it wouldn't crank. Most of the time it would long crank, then I'd turn the key off and cranks again and fired right up. Simply a loose connection that eventually worked completely loose. Make sure those are tight. You can barely see them. Take a long stick or screwdriver an make sure they're fully inserted. That could make the long cranks go away.
If a connector is oil soaked, it'll need replacing along with the pigtail. Cam is a pain in the rear. I've developed a way to R&R the cranks sensor in 15 minutes. Getting that sucker out is a pain. Insert a thin, strong wire below the bolt flange and work it loose that way. It'll save some skinned knuckles and should pop right out. I actually used a screwdriver with the wire wrapped around the shaft and pried on it until it popped loose. It pulls the sensor out about as straight as you can get.
If a connector is oil soaked, it'll need replacing along with the pigtail. Cam is a pain in the rear. I've developed a way to R&R the cranks sensor in 15 minutes. Getting that sucker out is a pain. Insert a thin, strong wire below the bolt flange and work it loose that way. It'll save some skinned knuckles and should pop right out. I actually used a screwdriver with the wire wrapped around the shaft and pried on it until it popped loose. It pulls the sensor out about as straight as you can get.
Logistics Pro
Joined: Jul 2014
Posts: 4,673
Likes: 531
From: Houston, Texas
Yes, you'll need to pull codes and monitor live data. Even if I was just guessing at the problem, hoping I could throw a part and get lucky, the most likely guess is that you have a typical hot/no start from a high pressure oil leak. which could be from any number of places. It'd be silly to guess at it.
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