Question about John Deere Fuel Line To Injector Boot 3020 4000 4020

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80 280ZX no pulse to the injectors and No power to the fuel pump

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Check fuses???
Then start at the ignition.
Unplug fuel pump and see if key on gives it the voltage at connector.

Posted on Nov 12, 2014

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2006 PT Cruiser cranks but won't start, runs on ether. New fuel pump.


Is the fuel pump relay sending power to the pump, do you have normal fuel pressure at the injectors, and are the injectors getting power and pulse from the computer ?

Sep 11, 2015 | Cars & Trucks

1 Answer

What causes o low injector pulse


Is that static pressure with key on, engine off? Or engine running pressure? Both should be near 60, usually key on, engine off pressure will be about 3 or 4 psi higher.
If it runs good after starting, the injector pulse must be good. No reason why starting and running pulse should be different. Only difference is when running, fuel pump power is kept on by the oil pressure switch, whereas in starting, the fuel pump relay keeps the pump on. Very unusual, let us know. Measure voltage at one of the injector's power wire with key on. It should be battery voltage or very close.

Aug 22, 2015 | Cars & Trucks

1 Answer

2007 toyota corolla no fuel no spark no injector pulse no power at crank sensor or cam sensor


did you jump it backwards? check for power on fuse block under hood

Feb 14, 2015 | 2007 Toyota Corolla

1 Answer

Fuel pump pulsing when i turn key on


Well the pump would not be able to flood the engine unless the pressure regulator failed or one of the injectors was stuck open.
Have you checked the regulator and injectors ? The pump relay should power the pump for 3 seconds when you turn the key switch on, and you should have around 40psi of fuel pressure in the injector line.

Jun 23, 2013 | 1999 Dodge Ram

1 Answer

Fuel pump is working but getting no fuel to the engine


You have disconnected the filter and know that the pump is pumping fuel forward ?
Does the fuel rail at the injectors have pressure ?
Are the injectors getting power and injector ground pulse from the computer ?

Dec 17, 2012 | 1997 Ford F150 Regular Cab

1 Answer

The dash gauges all work , fuel pumps are both good , the fuel pumps wont come on and the truck trys to fire when i turn the ignition on but wont , could this be a fuel regulator


did you check the fuel pressure pump on the frame rail for power and ground? have you verified no ignition spark to the spark plugs? have you checked for fire from the coil to the distributor cap? does the check engine light come on when you turn the key on? have you check for injector pulse and power at the fuel injectors? if the fuel pump won't come on and you have no ignition fire and no injector pulse, all of these systems are triggered by the ECM.

Aug 12, 2011 | 1990 Ford F150

1 Answer

91 camaro 5.0 5sp no injector pulse and no power to fuel pump


Using a multimeter check the wiring for power at the pump and at the relay. It sounds like a bad relay.

Jul 19, 2010 | 1991 Chevrolet Camaro

1 Answer

IS IT POSSIBLE MY FUEL PUMP DIED WHILE PARKED IF YES WOULD IT CAUSE NO PULSE AT MY INJECTORS


injector pulse occurs regardless of fuel pressure, the pump not working has nothing to do with the opening and closing of the fuel injector, which is referred to as "pulse width" and is measured in milli seconds.

Jun 05, 2009 | 1993 Jeep Wrangler

1 Answer

No power tp the fuel pump, injectors not pulsing, no fuel.


Check out your oil sending unit, fuel pump and relay, check for power (might be a fuse), the ignition control module (which if you remove it, can be tested for free at AUTO-ZONE), any related wiring, pick-up coil (inside the distributor), and possibly the ignition switch. If I can be any more help just as away.

May 28, 2009 | 1994 Chevrolet Caprice Classic

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