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Truck crank over but won't start no spark and fuel pressure

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Hi Dennis , what make ,model an year truck do you have ? There are some other things to consider on other make vehicles . No spark an no fuel together on a dodge or Chrysler vehicle would suggest a ASD Relay ! On ford there is a relay also , but the name I just don't remember right off the top of my head an I don't feel like opening my ford service info software right at the moment !

Posted on Apr 09, 2015

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Posted on Apr 09, 2015

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1 Answer

Cranks but won;t start, is it the fuel pump?


number one thing to do , are you getting spark , pull a plug wire at the plug side and put the screw driver in the hole in the wire off and hold it to ground have someone crank it over a few seconds and see if you have spark , if you are getting spark then you are not getting fuel you have to ck you fuel pressure should be around 40 lbs , but some cars vary but it is pretty high you can ck online for the right pressure , also ck your air filter believe it or not I seen some cars not start because of a dirty air filter . let me know how you make out

Jul 11, 2014 | 1993 Toyota Camry V6

1 Answer

1994 Mazda PU Truck sometimes won't start if shutoff for 5-10 minutes.. Several tries later, it will start. spark seems ok, it gets enough fuel for a second, but then poops out. fuel pump shuto


Well there is no shutoff relay, but there is a fuel pump relay that powers the pump.
I would check it first. The computer grounds the relay for 3 seconds when you crank the engine to boost fuel pressure. Once the engine starts the pump is powered only if you have oil pressure.

Apr 12, 2013 | Cars & Trucks

1 Answer

Cranks well but won't start.


Looks like you got spark, and gas in the throttle body made it fire: nice work.
Sounds like your fuel pump is out or the wiring is not turning it on. One way to be sure is to set a spare battery near the tank and hot wire the pump with jumper wires. Or if you have a voltmeter check for voltage at the fuel pump connector while the truck is cranking.. If the pump is working and getting gas to the engine, see if the injectors are pulsing. A good idea to check fuel pressure if the pump is working.

Nov 17, 2012 | 1992 Toyota Pickup

1 Answer

2004 chevy blazer will not turn over


Just to clarify what you said, if it cranks it turns over.
If it won't start, you would check for spark at the plugs and fuel pressure at the rail. Vortec engines need at least 60psi fuel pressure to start. If you have spark you could try spraying carb cleaner into the intake hose to boost the amount of fuel as a test.

Sep 07, 2012 | 2004 Chevrolet Blazer

3 Answers

1994 ranger 2.3L 5 speed, 2WD, a/c. Cranks but


connect fuel pressure gauge see what pressure you have with key on reply back

Feb 04, 2010 | Ford Ranger Cars & Trucks

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