HELP Power stroke wont start
Cargo Master
Joined: Jul 2006
Posts: 2,756
Likes: 38
From: Nampa, ID
The Fuel Pressure Regulator (FPR) should have a schrader valve (like a bicycle tire) on it. Screw on a fuel pressure gauge to the schrader valve and start the engine. The needle will probably jump up and down. Watch where the low and high readings are and go with the middle reading as a starting point.
If you don't get a reading of at least 60psi at idle, the FPR may need adjusting. In the 94.5 - 97 thread, we call it an "FPR Shim". Go to our thread and search on "FPR Shim". You'll get plenty of reading material and info (with pictures) to do this.
Basically, we added a BB to increase spring tension. This brings the fuel pressure into spec.
As an example, my '97 F350 had a pressure reading of about 40psi. I added a BB to the FPR. The fuel pressure raised to 70psi. The engine idles smoother and throttle response is fantastic.
I bought a fuel pressure gauge from NAPA. It says to not use it for diesel. It isn't permanently connected to my truck, so I didn't worry about it. It screws onto the schrader valve and reads fine. Get the 90* adapter if there isn't alot of room.
DO NOT ADD THE BB WITHOUT KNOWING "BEFORE" YOUR FUEL PRESSURE. TOO MUCH FUEL PRESSURE IS NOT GOOD.
If you don't get a reading of at least 60psi at idle, the FPR may need adjusting. In the 94.5 - 97 thread, we call it an "FPR Shim". Go to our thread and search on "FPR Shim". You'll get plenty of reading material and info (with pictures) to do this.
Basically, we added a BB to increase spring tension. This brings the fuel pressure into spec.
As an example, my '97 F350 had a pressure reading of about 40psi. I added a BB to the FPR. The fuel pressure raised to 70psi. The engine idles smoother and throttle response is fantastic.
I bought a fuel pressure gauge from NAPA. It says to not use it for diesel. It isn't permanently connected to my truck, so I didn't worry about it. It screws onto the schrader valve and reads fine. Get the 90* adapter if there isn't alot of room.
DO NOT ADD THE BB WITHOUT KNOWING "BEFORE" YOUR FUEL PRESSURE. TOO MUCH FUEL PRESSURE IS NOT GOOD.
Posting Guru
Joined: Sep 2007
Posts: 2,207
Likes: 1
From: Las vegas
Originally Posted by IDMooseMan
My '97 7.3-liter PSD requires a minimum of 40psi and a maximum of 80psi at the FPR. The closer to 80psi, the better.
Did you check the cable connections at the battery, starter relay and the starter? If they're loose, the starter won't engage and the engine won't turn over.
Did you check the cable connections at the battery, starter relay and the starter? If they're loose, the starter won't engage and the engine won't turn over.
Posting Guru
Joined: Sep 2007
Posts: 2,207
Likes: 1
From: Las vegas
Not offended I was refering to IDMooseMan saying he had a mechanicle lift pump I was wrong about the psi needed to start. I thought he had an electric pump but you both have mechanicle lift pumps.
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Freshman User
Joined: Oct 2006
Posts: 28
Likes: 0
do you have an idea on what i should do? I am at the point of trying to find a shop that can try to fix it in the area. I am also hearing that the soy diesel can toast injectors do you know anything about that?
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Freshman User
Joined: Oct 2006
Posts: 28
Likes: 0
We have a wise Int shop about 30 min from us but they charged my boss 1400 for a glow plug and a transfer fuel pump on our 1999 INt box truck, that just scares me to death I don't have that kind of money. I also don't want to take it to a shop who is just guessing at what the problem is.
Posting Guru
Joined: Sep 2007
Posts: 2,207
Likes: 1
From: Las vegas
I would call first and get them to give you some kind of quote for diagnosing it and to see it they'll even work on a non fleet vehile some IH dealers will some wont. But the labor rate is pretty high the IH dealer I work at is $105 an hour. You may want to see if theres any small shops near you that could look at it they may be cheaper but may not know what there doing but the IH dealer may not either. But it also may cost you more in buying tools to check it out than to have it fixed of coures you'd have the tools for next time.
As for the soy fule as I understand it bio is no bueno in the navistar counterparts and kills warenty on injectors and such.
And if the box truck had the T444E the lift pump is bitch to get too and I think pays like 3 hours pluss parts. and depending on the setup and what side the glow plug was on theres a bit of stuff in the way but 1400 seems kinda steep.
As for the soy fule as I understand it bio is no bueno in the navistar counterparts and kills warenty on injectors and such.
And if the box truck had the T444E the lift pump is bitch to get too and I think pays like 3 hours pluss parts. and depending on the setup and what side the glow plug was on theres a bit of stuff in the way but 1400 seems kinda steep.
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
Originally Posted by james_phebe
yes it takes it 2 or 3 cranks but it climbs all the way up to 3/4 the way up
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Freshman User
Joined: Oct 2006
Posts: 28
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Hi it says I need a password and a user name what should i put in that location my email is james_phebe@yahoo.com