Got the injectors in, at first it smelled a whole lot better and seemed like it ran a little better, but once on the highway it started smoking and surging again, bummer bummer bummer, seemed worse on the smoke actually.
Power surges after 2500 rpm
Well, I did a search and I can't find anything that is the same as my problem.
What happens is, at 2500 rpm, if I increase the throttle there is less acceleration than there should be, then at maybe about 2600 rpm, the truck will surge up to about 3000 rpm without a change in the throttle.
Seems like it happens only when the truck is warm, and maybe been on the highway for a while, but I also don't rev it that high when cold so I am not 100% sure of that.
I am guessing the IP or lift pump, but IP is the only thing that makes sense to me.
Has anyone experienced the same thing or have any ideas?
What happens is, at 2500 rpm, if I increase the throttle there is less acceleration than there should be, then at maybe about 2600 rpm, the truck will surge up to about 3000 rpm without a change in the throttle.
Seems like it happens only when the truck is warm, and maybe been on the highway for a while, but I also don't rev it that high when cold so I am not 100% sure of that.
I am guessing the IP or lift pump, but IP is the only thing that makes sense to me.
Has anyone experienced the same thing or have any ideas?
21 - 28 of 28 Posts
Dang, I was hoping it was going to be a simple fix.
What about your CDR valve, is it bad and sucking excessive oil in the intake ??
One thing to try is when it's hot, and your having the problem, try shutting the truck off, and pouring water on the ip to cool it down.
If you start the truck up and it runs better then potentially your IP is bad.
Someone chime in if I'm wrong on this technique.
What about your CDR valve, is it bad and sucking excessive oil in the intake ??
One thing to try is when it's hot, and your having the problem, try shutting the truck off, and pouring water on the ip to cool it down.
If you start the truck up and it runs better then potentially your IP is bad.
Someone chime in if I'm wrong on this technique.
NOOOO don't do that if you poor cold water on a hot pump you will ruin it.Dang, I was hoping it was going to be a simple fix.
One thing to try is when it's hot, and your having the problem, try shutting the truck off, and pouring water on the ip to cool it down.
If you start the truck up and it runs better then potentially your IP is bad.
Someone chime in if I'm wrong on this technique.
I've always heard that you can use room temp water to do it and you're OK. Maybe I'm completely wrong though.NOOOO don't do that if you poor cold water on a hot pump you will ruin it.
Here's one of the many debates on the topic
http://www.thedieselstop.com/forums/f30/ford-7-3l-idi-hard-start-when-warm-180133/ .
I just wouldn't take that chance, he doesn't have a start issue like your link points to.
That's a good idea for diagnostic that I hadn't thought of, but I would be afraid to do that and have to find a whole new pump or something.
I'll just take the IP in I guess, not much left it can be really.
The smoke is kind of blue, so I thought about the CDR, but the smoke smells just like diesel and not a bit like oil, so it just can't be the whole problem.
Once the pump is rebuilt, the fuel system will be new from the new electric lift to the cylinder. I'm not getting any air intrusion anywhere now so I just have to fork out the dough I guess.
Thanks for the help and ideas and I will update when there is news!
I'll just take the IP in I guess, not much left it can be really.
The smoke is kind of blue, so I thought about the CDR, but the smoke smells just like diesel and not a bit like oil, so it just can't be the whole problem.
Once the pump is rebuilt, the fuel system will be new from the new electric lift to the cylinder. I'm not getting any air intrusion anywhere now so I just have to fork out the dough I guess.
Thanks for the help and ideas and I will update when there is news!
Low and Behold it was the IP!!!
Not that I doubted it.
Apparently there was a broken spring washer next to the thrust washer, allowing the shaft to move back and forth, causing the governer weights to do something and so on.
The advance piston was wore out also, anyway for $385 I got a complete overhaul and calibration and it runs perfect.
At least I didn't go to an Auto Parts store and pay them $1200 to send it to the same place!
Goes to show you never know, the smoke was sure looking blue to me, but it was diesel that was makin' it.
Thanks to everyone for their input!
Not that I doubted it.
Apparently there was a broken spring washer next to the thrust washer, allowing the shaft to move back and forth, causing the governer weights to do something and so on.
The advance piston was wore out also, anyway for $385 I got a complete overhaul and calibration and it runs perfect.
At least I didn't go to an Auto Parts store and pay them $1200 to send it to the same place!
Goes to show you never know, the smoke was sure looking blue to me, but it was diesel that was makin' it.
Thanks to everyone for their input!
Glad to hear you got it fixed:thumbsup::thumbsup::thumbsup:
21 - 28 of 28 Posts
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