1987 Ford 402 starting/running problem

MUSTSEA1

MEMBER
1987 FORD
38,000 MILES

1987 Ford Honey Motorhome, looks like a standard 402 8 cylinder. Problem one, would start and just die as if it ran out of gas, it's getting fire (it does start), it's getting fuel, we've disconnected the fuel line and it pumps just fine, we've looked at the jets and floats in the Holly 4 barrel Carborator and they are clean and free of any debris.
Now, after rehooking up the fuel line, it won't even turn over for some reason, it will hotwire from the cylinoid (sp?). Help it's driving me crazy

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Do below to determine if its a fuel or spark problem

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if so, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing