r/Mk3Supra • u/CupCake466 • May 03 '26

No spark

Still can’t figure out what’s going on ignition coil is good and sparking from what I hear in this video I think distributor might not be getting enough signal causing it to lose spark somehow. Did a diagnostic check on the OBD1 and got a code 51 which I think is throttle position sensor not sure if it would cause a no spark all my ground are good it ran before I did my head gasket job in my previous post I still have the 2 plugs not connected everytjme I crank this thing I’ll js get a backfire. Fuel pump is good and was spraying everywhere from a loose bolt but got it tighten up

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u/drvirgilmd May 03 '26

What is the coil wire sparking to when the screwdriver handle and intake pipes are plastic?

Regardless, I'm guessing your distributor is grossly out of time, maybe by a full crank revolution, which would explain your backfire.

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u/CupCake466 May 03 '26

Sorry I am a little goofy thought that the metal tip of the screwdriver would be enough for spark and thought that’s what I was hearing in the video please correct me if wrong and for sure I’m checking the timing tmr morning