putting gas where?
or doing the Test fuel procedures?
is this a barn find/ field found car, or it ran perfect last week, and DD for months. (daily driver?) all this maters and is unstated.
1.6L or 1.8L engine, G16 or J18 suzuki enignes? major different they are.
with old engines, we do this and win every time.
all FUSES good, (EFI and spark fuses up to 3 or more)
1: compression test, sparks out , wide open throttle. warm to hot engine.
180psi on all,, good, if like 90, the timing belt slipped. if J18. we have
3 folks now on our forum that managed to slip a chain (they ingored huge noises from engine,,,, amazing)
2: spark got good on all 4 cylinders. and timed right not guessed at
using a real tool called a timing light for 20 bucks.
3: with fuel pump relay pulled i test engine on test fuel.
runs for 3 seconds, each spray and SOUNDS good.
ok it does that.. (this avoids flooding issues)
4: i put back the fuel pump relay.
and it dont start. i check for injection,
i find all injectors, dead.
the ECU is cutting injection,
i connect scan tool and see the CKP DTC errors , the CKP is dead
or CMP on G16. dead. the ECU reports them cranking only, on a dead engine.
the ECU will cut fuel if it seen spark dead.
the ECU will cut fuel if the TPS sensors signals wide open throttle cranking
i checked all that and its good.
i find fuel pressure a 0 , cranking, (one more cheap tool)
i find 12vdc good to pump cranking (a 10 buck meter at walfart)
the pump is bad. no the wires are corroded. at the pump line....
super common on old cars.
this is 1 example path of 100s.