Hey guys, been forum searching for the last month or so and trying various things to fix my truck. It started as randomly shutting off and turning back on a few months back which led to me replacing the ICP which fixed it but when I got on throttle it felt a little off, however I just thought I was going nuts. Also throughout the winter it was started with ether, gelled up, and ran out of fuel on multiple occasions (non working fuel gauge) A few months pass by and my
truck breaks down on a hot day after about a 50 minute drive sounded like it was gelled up but obviously wasn’t. Got a tow to my shop (about 20 minutes) and it fired back up. Revved up to 3k but popped out the exhaust. (Never done that before) turned truck off and went to work on the car I had at the time. As time passed by the truck just got progressively worse and now we’re here, the truck feels like it has 0 power what so ever has a misfire most the time when driving but occasionally clears up, oil cap dosent get blown off of the oil fill but hazes blue and rolls white after accelerating from a stop sign and misses plain as day until about 15 mph where it’s just a slight miss, as the truck heats up the misfire gets worse and becomes harder to drive. In the last week I’ve replaced the IPR, changed the oil, and swapped newer batteries in. I’ve checked the UVCH on the driver side along with unplugging the injectors while running on that side one by one and it just made the truck worse. I can’t connect a snap on reader to it that a friend of mine has or let alone any reader says cannot connect to vehicle. Need to get around to checking passenger side UVCH but i just feel as if it’s something else. Hoping someone can point me in the right direction!!

 

#1 never use ether on a truck with glow plugs, glow plugs will ignite the ether before top dead center and destroy the engine. First thing for you to do is get the appropriate OBDII adapter and something like ForScan for your phone or tablet so you can monitor your vitals. If you have an Android based tablet you get a blue tooth adapter, if you're on iOS you get a WIFI adapter. And make sure you don't get a cheap Chinese knock off.

 

I can’t connect to my obd port. That’s the only reason I haven’t

 

That OBD data is crucial - I hope you can figure that out.

In the meantime, can you tell us more about the truck itself, model year, miles on it, any mods, significant maintenance, injectors stock or replaced, performance chip?

Might be good to check the fuel pressure at idle and WOT.

A compression check would be useful as well.

 

The OBD port shares a fuse with your cigarette lighter and a blown fuse there is not uncommon. Why can't it connect? What are you trying to connect with?

 

It’s a 2001 f350, 380k, previous owner said it had new injectors Hpop water pump and turbo, all look new so I’m sure injectors are. How would i go about checking fuel pressure? And I’ll look into the cigarette lighter, but the truck starts to connect and reads somethings plugged in but then says error... was trying my friends snap on scanner.

 

@Joey Burger Here is a link on how to check your fuel pressure. Trey has linked the parts needed in his video. I have not done this, as I installed a permanent fuel pressure gauge on the truck, but this looks pretty straightforward.