Just pulled my intake manifold off to replace the heater hose pipe on the back of the manifold. Also changed out gaskets and spark plugs while in the process. Got it all back together, made sure coils snapped onto spark plugs, made sure everything was tight and that all plugs were plugged in. Try starting truck But all it will do is crank. Won't start. Any help? It's a 98 with a 4.6. Also checked fuses inside cab and they were good

 

Pull a plug or two and check spark, does it even try to fire?

-Steve

 

Is there any fuel pressure? There's a Schrader valve on the fuel rail. If not, check the inertia switch. Can you hear the fuel pump prime when you turn the key on?

You have a 98 4.6 with coils on the plugs? All the 98 4.6's Ive seen have 2 coil packs and plug wires.