1996 Land Cruiser, 175k miles
Driving it this morning. 10 minutes from home while gently accelerating from a stop sign the engine died (it all happened smoothly and did not hiccup or backfire). I tried to start it again and it fired for less than 1 second only 1 time but died again instantly. I tied to start it many more times but it would not fire. No heavy smell of gasoline. Cranks freely but won't fire. Towed it home.
Checked the following items this evening.
Battery is at 12+ volts
I can hear the fuel pump re-prime after cranking the engine over
Fusible link has continuity on all 3 legs.
All fuses appear to be fine.
Confirmed spark at the plugs by removing plugs 1&2 grounding them against the throttle body while cranking the engine.
Plugs look dry
No heavy smell of gasoline from the engine compartment after cranking the engine for 15 seconds with plugs 1&2 pulled from the head
Engine turns over freely
Rotor spins in the distributor cap when cranked over (I believe this confirms the timing chain is intact)
It will not start (or even fire) while spraying starting fluid into the throttle body (this makes me think it may be a weak spark. How would I diagnose a weak spark?)
Scan Gauge shows throttle positioning sensor reading around 8 at zero throttle and around 70 at full throttle.
I'd love some guidance from the Fourm on what to diagnose next and the process of doing said diagnostics.
Driving it this morning. 10 minutes from home while gently accelerating from a stop sign the engine died (it all happened smoothly and did not hiccup or backfire). I tried to start it again and it fired for less than 1 second only 1 time but died again instantly. I tied to start it many more times but it would not fire. No heavy smell of gasoline. Cranks freely but won't fire. Towed it home.
Checked the following items this evening.
Battery is at 12+ volts
I can hear the fuel pump re-prime after cranking the engine over
Fusible link has continuity on all 3 legs.
All fuses appear to be fine.
Confirmed spark at the plugs by removing plugs 1&2 grounding them against the throttle body while cranking the engine.
Plugs look dry
No heavy smell of gasoline from the engine compartment after cranking the engine for 15 seconds with plugs 1&2 pulled from the head
Engine turns over freely
Rotor spins in the distributor cap when cranked over (I believe this confirms the timing chain is intact)
It will not start (or even fire) while spraying starting fluid into the throttle body (this makes me think it may be a weak spark. How would I diagnose a weak spark?)
Scan Gauge shows throttle positioning sensor reading around 8 at zero throttle and around 70 at full throttle.
I'd love some guidance from the Fourm on what to diagnose next and the process of doing said diagnostics.