Engine is turning over fine, there is fire on the lead wires but the injectors does not open. current is present on the positive going to the injectors but the is no pulse on the receiving end and the control unit works fine. what other sources would create the pulse to the injectors?
Hi. Thanks for your question. For issues related to pulse on the injectors for Suzuki you can visit https://www.reliable-store.com and download the entire workshop manual which includes all the information along with the diagrams for better understanding. Good day!
SOURCE: no pulse at injectors
The normal way that injectors are controlled is via the permanent application (ignition on obviously) to one side of the coil that operates the enclosed piston, and the precisely timed application of ground (negative) to the other side of the coil.
The transistors that control this switching under the command of the engine computer are typically contained within the computer itself.
Measuring the voltage at the injectors is not productive since the common multimeter is incapable of detecting the very short pulses that activate the coil. Some kind of visual means would be needed to observe this pulse such as an oscilloscope or an engine analyzer equipped with a 'scope.
It's unlikely that all of the switching transistors (or the injectors) have failed simultaneously so either the computer has a problem or there is no fuel being delivered to the fuel rail that feeds the injectors.
You should find a pressure regulator that sits between the fuel line coming from the tank that controls the fuel pressure for the injectors.
This device seem to be a sore point in many vehicles and can make it appear that the injectors are not working.
Many fuel rails have a fitting similar to a tire valve to allow the testing of the pressure being delivered. I would recommend you check this before assuming that the injectors are at fault.
SOURCE: car wont start
test light on neg with key on power at both sides of coil ???? next test light on bat plus put to coil neg and have somone turn car over if test light flashes and still no spark coil is bad if test light no flash ignighter is most likely bad the ignighter switches ground on your coil for spark
SOURCE: 89 s10 2.5 has fuel and fire injector has power but no pulse
injector pulse is just controlled by the ecm or computer as some would say,u said u replaced wires? did u have a fire or melt wires? ecm is known to go bad on these,had a few of these trucks back in the day.
SOURCE: I have 94 T-bird with 4.6 v8, engine wont run,
All I can think of is to check the compression. Did you replace the plugs and wires because it wouldn't run? Does it even try? Does it cough and sput?
SOURCE: no spark from coil + code 54 /1992 Dodge Dakota 4x4 3.9ltr man.tr
replace the pickup coil, it under the distributer cap. that should resolve the problem.
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