i feel like ive been here before helping someone else solve this same problem, but...
we have a 5.7 EFI engine with flat top distributor cap. there was a new fuel pump installed this past spring. new plugs and cap/rotor last month the pump was replaced due to noise and low pressure, the plugs and cap/rtr were replaced because it was running rough.
now, 1 week later, it wont start.
fuel pressure tested fine, up to 60psi when turning the key on.
injectors pulse when cranking. the coil gives nice bright spark when tested but testng the spark plug wires i get a very week spark and you have to be real close to the ground to see it jump.
i replaced the cap/rtr again when i saw this but nothing has changed, i also threw wires on it but no difference.
im leaning towards the coil being the issue, thinking maybe it could not have enough power to push past the resistance in the cap/rtr wires?
we have a 5.7 EFI engine with flat top distributor cap. there was a new fuel pump installed this past spring. new plugs and cap/rotor last month the pump was replaced due to noise and low pressure, the plugs and cap/rtr were replaced because it was running rough.
now, 1 week later, it wont start.
fuel pressure tested fine, up to 60psi when turning the key on.
injectors pulse when cranking. the coil gives nice bright spark when tested but testng the spark plug wires i get a very week spark and you have to be real close to the ground to see it jump.
i replaced the cap/rtr again when i saw this but nothing has changed, i also threw wires on it but no difference.
im leaning towards the coil being the issue, thinking maybe it could not have enough power to push past the resistance in the cap/rtr wires?