Spider issue
#11
Simplifying things in regards to the above, You may hardwire one side of the coils to the positive +12V battery line. Then, You may tie the other ends together and apply the negative power line to have them opened. If You direct the nozzles into a set of 6 glasses, then You may compare if they spray same amount over time. With this manner You don't need any source of PWM pulse generator....
I read a lot of threads that start with, "I have already replaced ................. and still no joy."
George
#14
Guess im gonna bite the bullet and put a new spider in
I can't even visualize how one would go about putting 6 cups under the hood and catching the fuel from the injectors for flow rate comparison my sanity is worth more than that
#16
Sequential fuel injection is triggered by the crank sensor, but which one fires is determined by the cam position sensor. If you unplug the cam position sensor, the engine will still run, but this is because the fuel injection goes into a mode where it pulses banks of injectors.
#18
You may disconnect the cam plug and see if it affects the engine running.
If You have a person that is skilled in electronics, You may ask for checking whether the spider injectors run into a sequence of firing order or by bank (as when cam signal is missing).
#19
It would set a P1351 if there was no cam sensor signal. SWartllk has given you good advice some time back.
Last edited by LesMyer; 04-24-2019 at 04:08 PM.
#20
Ok so to clarify the truck 8s not running period. I resealed the lim and replaced the distributor while i was in there. Also i had an updated spider that came with the truck when i hooked fuel lines up it filoed the cylinders with fuel preventing me from turning the crank to tdc for distributor install. I have never seen this spider run as the engine it came on was destroyed either from coolant in the oil or leaking oil lines thought maybe 8 would get lucky with the mpfi injector but doesn't seem to be going my way lol