Question about Cars & Trucks
Can you hear the pump hum or buzz when you turn the key to on? It should come on for a couple of seconds to pressurize the fuel system. If you don't hear it, check the fuel pump fuse. If fuse is good, find the fuel pump relay under the hood. Hold a finger lightly on the relay and have someone turn the key to on. You should feel it click on to power the fuel pump. If no click from the relay, you will have to diagnose the fuel pump circuit. The relay should have power from a fuse link or a maxi-fuse that may be out. The computer signals the relay to turn it on.
Now if you do hear the pump, you would want next to check the ignition circuit: check for spark on one or two of the spark plug wires. The ignition is probably good if you see a blue snapping spark. If weak, intermittent, or orange colored spark, the ignition circuit would need diagnosing.
Posted on Jul 12, 2013
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Posted on Jan 02, 2017
turn your key on, DO NOT TOUCH THE GAS PEDAL and start, good luck. Pumping the pedal doesn't do a thing for fuel injection. In thre days of carburetors and you had control of your own property, Pumping did a couple of things. It set the choke and added more fuel. But that was yesterday and yesterday's gone.
Posted on Jul 01, 2009
SOURCE: I got a 78 Suzuki
Try changing your fuel petcok. There cheap and easy to change. Also if you ever have anymore questions i'd check out thegsresources.com there's a bunch of useful info there.
Posted on May 18, 2011
Change your fuel filter - enough clogging can prevent fuel flow, and it sounds like you have a fuel delivery problem rather than an issue with the injectors firing. The other culprit would be the fuel pressure regulator. That's what will allow line pressure to be sufficient for the engine to run. Either a failed regulator or a broken vacuum reference line to the regulator would cause that.
Posted on Aug 11, 2011
Pull off one injector connector and use a test light or voltmeter to see if one wire has power with key on.
Power to the injectors is fed through the ignition switch, so with key on, you should have power there. The injector ground is inside the ECM. If you have power, you'll have to diagnose the circuit for why computer doesn't ground the circuit when it should.
Posted on Nov 07, 2011
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