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-   -   This Guy has a real stumpper. (https://www.f150online.com/forums/v8-engines/252608-guy-has-real-stumpper.html)

Fireman54 09-06-2006 12:12 PM

won't start
 
have not pulled the plugs but if I squirt gas in throttle body starts and runs until what I poured in burns up.

4X4ALLTHEWAY 09-06-2006 08:25 PM

You checked for pulse from PCM but did you check the resistance of each injector? Also you may have plenty of pressure but not enough volume to supply to the engine to keep it running.

mrainey889 09-07-2006 06:09 PM

Heh...where did the injectors come from? If they are aftermarket replacements (i.e. from Autozone, Advance Auto, Napa, etc...) they could very well be defective, or simply the wrong parts. How could they both be defective? They were probably produced in the same batch at the same factory. I am not trying to bad mouth any of the stores mentioned above or any others not mentioned, they just sell what they are supplied. I simply have experienced "new" parts that did not work any better than the old ones I swapped then with. Leads to alot of foul language generally. Even if they are brand new OEM parts purchased at a Ford dealer I would be suspicious.

When you have eliminated the impossible, whatever left, however improbable, must be the answer!

- Sherlock Holmes, or some variant thereof close to the original.

Good Luck!

Mike

coryrhonda 09-07-2006 10:34 PM

I didn't see anywhere what the rail pressure is. This is the pressure that counts. Depending on the year there is a fuel pump on the fuel rail that boost the pressure up. check for pressure at the fuel rail. also make sur that the noid light flashes bright while cranking and running. Also make sure thaere is good frsh, not diesel, fuel to the rail. if all this checks out, you did a test wrong. whatch the fuel pressure at the rail while cranking, it should hold pressure and drop about 8-10 psi after start because vacuum on the regulator drop the pressure about 9 psi

Labnerd 09-07-2006 11:31 PM

Do the research first before tearing anything apart. Do the linky and look on the right side of the page for the self diagnostics. This linky will tell you more about your injection system than you want to know.

http://www.fordfuelinjection.com/

Fireman54 09-08-2006 01:31 PM

fuel pressure
 
At the rail I ahve 60 psi rear tank and 45 front tank

Fireman54 09-08-2006 08:37 PM

It runs
 
:beers: I told you it was something stupid.
I unplugged the oil sensor that is just below the distributor and VROOM it started right up.


I would like to thank all you that helped and coached me through this difficult time.

Greg

projectSHO89 09-08-2006 09:59 PM

Doesn't make any sense...but whatever worked..

Steve


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