east302
I'm Awesome
what I need to know is what controls the timing that would have suddenly changed with no warning.
Here are the pages from the ‘98 service manual that cover the ignition timing basics. Maybe something will stand out.
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One thought, if the coolant temperature sensor is flaking (sending a really oddball low number to the computer) it can cause a hard start. Putting the gas to the floor while cranking puts it in clear flood mode, temporarily stopping injector flow. A quick test, in other words.
The throttle position sensor is another input in calculating the air-fuel ratio. The signal voltage should be under 1.25V when throttle is closed. If it is reporting higher than that, it could be forcing a clear flood mode - so no injector flow.
Assuming that you have good consistent blue spark at all eight, have you checked the fuel pressure? Spec is 60-66 psi at the test port on the driver side. Have you tried a shot of starting fluid down the TB?