Port Engine won’t start

[Thelma Jean I]

Hello everyone! I got a 95 380 Santego with 454XLi engines. It’s cranks but won’t turn over.. any troubleshooting advice?
Thanks!!!

[Hoplite808]

What do you mean by it cranks but wont turn over? Is the starter motor running but the crank isn't being turned? If so its either a flat spot on the flywheel or a bad starter motor. If the crank is turning and its not starting there are only two possible reasons for an engine not to start. It's either not getting fuel or its not getting fire. You'll have to test for spark at the spark plugs and if there is none then trace the ignition system back till you find the fault. If you have spark then try putting a shot of starting fluid down the intake. If it starts then dies the engine isn't getting fuel. You'll have to trace the fuel system back to find the fault.

[Viper]

I'm assuming she's cranking/turning over but won't run? If that's the case, as mentioned, go back to basics and make sure you're getting spark and fuel. Last time ignition tune-ups were done? Does she have spin-on fuel filters and are they full of fuel? Does it crank over really easy or is she labouring?

[km1125]

Does this affect both engines or just one of them?

[Thelma Jean I]

QR_BBPOST I'm assuming she's cranking/turning over but won't run? If that's the case, as mentioned, go back to basics and make sure you're getting spark and fuel. Last time ignition tune-ups were done? Does she have spin-on fuel filters and are they full of fuel? Does it crank over really easy or is she labouring?

Yes it wont run.. battery power is there, fuel is working properly (New fuel filters for both sides). Once I have time later in the week, my brother and I will check on the spark plugs an I will certainly give an update. Thanks

[Thelma Jean I]

QR_BBPOST Does this affect both engines or just one of them?

Just the port side.. checking spark plugs later in week.

[Thelma Jean I]

UPDATE!!! All new spark plugs installed. Still not turning over to stay running. Any more suggestions?

[km1125]

QR_BBPOST

QR_BBPOST I'm assuming she's cranking/turning over but won't run? If that's the case, as mentioned, go back to basics and make sure you're getting spark and fuel. Last time ignition tune-ups were done? Does she have spin-on fuel filters and are they full of fuel? Does it crank over really easy or is she labouring?

Yes it wont run.. battery power is there, fuel is working properly (New fuel filters for both sides). Once I have time later in the week, my brother and I will check on the spark plugs an I will certainly give an update. Thanks

How do you know "fuel is working properly"... have you checked the fuel rail pressure before or while trying to start?

Were the filters pre-filled when you replaced them? How long ago were they replaced, and has the engine run fine since then until now?

[Thelma Jean I]

Update: Fuel pressure is proper, fuel filters filled and replaced in March. Engines were running like champs for 2 months afterwards completely fine.

Spark plugs changed, ignition coil and module replaced. Engine still will not start. I've gotten the suggestion that a scan tool may be needed now.

[km1125]

If it's cranking over and not starting, then you're back to basics. Compression, spark, fuel. You can do a lot of that checking without scanning the ending ECU. And a LOT of problems that would prevent the engine from running will not show up in an ECU of that vintage.

Did you check fuses and breakers? If there's fuel pressure in the rails, are the injectors firing? Do the plugs get wet from gas? Have you checked that any of the plugs are actually firing with a good, hot spark?