89 f150 5.0 injector question
08-29-2015, 08:05 PM
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89 f150 5.0 injector question
i have been having an issue with my truck not wanting to start. it has spark, the fuel pressure are the test port on the fuel rail reads 42 psi with the key on.
i removed the intake manifold to get the valve covers off to check 1 cylinder was actually at top dead with timing marks on dampner. which it is,i have the distrubater in time as well. so i think it is down to a fuel injection problem. but i have tested the fuel injector connecters for the 10.5v or higher. both wires show 10.5v constantly. should this be like this or should i only see power on one of the two wires?
any help would be great full.
i removed the intake manifold to get the valve covers off to check 1 cylinder was actually at top dead with timing marks on dampner. which it is,i have the distrubater in time as well. so i think it is down to a fuel injection problem. but i have tested the fuel injector connecters for the 10.5v or higher. both wires show 10.5v constantly. should this be like this or should i only see power on one of the two wires?
any help would be great full.
06-09-2016, 05:52 PM
#2
I will answer although I believe there are those that may be more qualified.
As far as the injectors are concerned I would think you could get the voltage reading but the injector itself could be dead. Maybe you have it going already, seeing how it is almost a year later. I think you should be getting around 14 ohms of resistance across the injector.
As far as the injectors are concerned I would think you could get the voltage reading but the injector itself could be dead. Maybe you have it going already, seeing how it is almost a year later. I think you should be getting around 14 ohms of resistance across the injector.
