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1995 f350 460 won't start!! Help me!!!!

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  #46  
Old 08-11-2016, 01:23 PM
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Ok i pulled the spout and no difference. I have to pretty much keep it full throttle to make it run and it smells strong of fuel.
 
  #47  
Old 08-11-2016, 02:27 PM
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That is because the fuel pressure is too high to idle. Idle fuel pressure needs to be about 30-32psi.
How come there is no vacuum on the vacuum line going to the FPR?
 
  #48  
Old 08-11-2016, 03:03 PM
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Not sure? Where does the vacuum originate from? How do I trace down vacuum problems?
 
  #49  
Old 08-11-2016, 03:13 PM
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That was WOT in the video. That's the only way it will run at all. I'm thinking about going to get a fuel pressure regulator. But don't want to buy anymore unnecessary parts.
 
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Old 08-11-2016, 03:54 PM
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It seems to be running to rich. Is the vacuum line still hooked to the MAP sensor OK. I have seen a engine run like this with the MAP sensor unhooked from its vacuum line.

The only other thing I can think of is an injector or two stuck open.
If there is no fuel in the FPR vacuum line then I would think it to be OK and it is regulating the fuel pressure OK at WOT. The vacuum line pulls on the spring to reduce the fuel pressure.
 
  #51  
Old 08-11-2016, 04:10 PM
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Yes the map sensor is hooked up. It does the same thing if it's plugged in or not. Is that an I indication of a bad MAP sensor?
 
  #52  
Old 08-11-2016, 04:20 PM
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I have heard that if it is bad you can unplug it and the engine will start but I have never tried it.
 
  #53  
Old 08-11-2016, 11:00 PM
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I got a spark tester. Because I read somewhere that the spark should be blue or white. Is there any truth to this? How many kv should I test it at?
 
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Old 08-11-2016, 11:24 PM
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Spark should be blue. the TFI ignition system makes a very hot spark.
 
  #55  
Old 08-12-2016, 12:55 PM
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I pulled the plugs this morning they were wet with fuel. I was sure they would be you can smell the fuel. I went ahead and did a compression test. 1 120# 2 125# 3 115# 4 140# 5 105# 6 115# 7 105# 8 125#. This engine has les then 4,000 miles on it should it have more compression?
 
  #56  
Old 08-12-2016, 01:24 PM
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4k, with those numbers, who built the motor?

The actual numbers vary, it's the differences that matters ...

Here is the percentage difference. They should be no more than 10%, some accept up to 15% ...
  1. 14.29%
  2. 10.71%
  3. 17.86%
  4. 0.00%
  5. 25.00%
  6. 17.86%
  7. 25.00%
  8. 10.71%

-Enjoy
fh : )_~
 
  #57  
Old 08-12-2016, 01:31 PM
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It's an Orileys crate motor. So would this account for it not wanting to run? The engine has a warranty just really can't afford to do a swap right now.
 
  #58  
Old 08-12-2016, 03:38 PM
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I have not followed this thread closely, but No ... I do not believe this is the issue.

It still should run, albeit a little power imbalanced between cylinders, maybe slightly rough, but it should run and idle.

You say the plugs are wet with fuel, did you let it evaporate to ensure it's fuel not oil and fuel?
Were all plugs wet?
Any smoke, what color?

These fine folks already helping you are far better suited to assist you with this issue than I.
I just poked my nose in over the compression numbers ...

ORileys Long block or short block?

-Enjoy
fh : )_~
 
  #59  
Old 08-12-2016, 05:02 PM
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Well I finally got it going. Had to move the distributor too the left quite a bit. Not sure what That's about. But one of my buddy's came over a set it by ear. Any thoughts?
 
  #60  
Old 08-12-2016, 05:07 PM
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Did this issue start suddenly?
Have you messed with the distributor, before today?
Does it run good, idle, power, etc...?

EDIT
Left = ???
Clockwise or Counter Clockwise.

-Enjoy
fh : )_~
 


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