efi swap won't start

[EB Passed down]

hello, i haven't posted in awhile, but i could really use some help. i did an efi swap from an 89 crown vic sd 5 or 6 years ago onto my rebuilt 302. with tons of help from forums and tech reads it fired up first try. it has now sat for too long. i tried to get it started and no luck. the fuel pump wouldn't run, either 1. now i've got that fixed - bad ecu. but it still won't start. i have spark and new fuel. any ideas would be great. thanks

 

[Ourobos]

Fuel pressure # at the rail, key on? Good spark at the plugs? Has to be one of the two, not much else left other than compression / timing.

 

[EB Passed down]

40lbs at the rail and i haven't pulled the dizzy since it ran the first time. the plugs are sparking. i don't know what good means exactly. they seem consistent.

 

[EB Passed down]

i was wondering if the injectors could get stuck or gummed up. it sat with fuel in it for the last 2 years.

 

[Ourobos]

Injectors could be clogged, that comes to mind first.

 

[EB Passed down]

can you check that or just pull them and have them cleaned?

 

[Viperwolf1]

Pull codes.

 

[EB Passed down]

i pulled koeo got 21 24 34

 

[Broncobowsher]

If you feed it carb cleaner (make sure it is the flammable version) down the throttle body will it run?

I am with the others. Gummed fuel system. 40 PSI at the rail shows some life in the pump, can it keep that up while cranking/running? If you can run it on a spray can a little bit you might be able to cycle some fresh fuel to the injectors and the computer cycling the injectors might be enough to get them flowing again. Even so I would still recommend draining the fuel system and getting the injectors cleaned out, put a new filter(s) in as well. I have seen enough engine damage caused by running them on gummed fuel. Stuck valves, keepers knocked loose, broken pistons. Not just once, at least 3 engines off the top of my head. All from gummed fuel getting into the engine after long term storage and getting it up and running on the old fuel.

 

[Viperwolf1]

i pulled koeo got 21 24 34

Nothing unusual if it's below 50 degrees out.

 

[67EB_in_619]

can you smell fuel after cranking for a while?
Will it start if you floor it?
..if so, change the ECT

if you loosen the dizzy and rotate it, do you hear the injectors clicking? (mark where it lined up before doing this to save time later) .. even better if you have a noid light to test the injector signal.
... if no clicks or lights (injectors not cycling) change the dizzy (or replace the hall effect in it.. I think easier to just replace).

 

[Ourobos]

If you feed it carb cleaner (make sure it is the flammable version) down the throttle body will it run?

This... If it still won't run after trying this, it's something spark related. If it runs and dies, it's fuel delivery.

 

[67EB_in_619]

This... If it still won't run after trying this, it's something spark related. If it runs and dies, it's fuel delivery.

unless it is flooding out, then adding starting fluid/carb cleaner only makes it worse.. this only checks if the fuel problem is a LACK of fuel.

 

[Ourobos]

Never seen many EFI systems flood out. Injectors normally stick closed from sitting, because well, they were closed.

 

[Broncobowsher]

Injectors usually clog or stick closed. In an unlikely event that an injector sticks open it would only affect that one cylinder (port injected EFI). That would leave you with 7 starved cylinders and one flooded cylinder. Still a no start. Spray can feeding it will put fuel to all cylinders. If one is flooded, there are still 7 more that can light off.

 

[EB Passed down]

i did spray carb cleaner in the intake and nothing. i don't smell fuel adn it is definately below 50 degrees. i drained the fuel tank and it smelled bad. i put new fuel in and there was no change. i am thinking of pulling the injectors and cleaning them. has anyone done this? i saw a youtube video of a guy with a battery and a syringe. it looked like it worked.

 

[Ourobos]

If that didn't start it, i think it's ignition related. Is the spark you're getting a nice hot blue one?

 

[EB Passed down]

it looks like good spark. it is sefi so if the injectors are stuck shut would carb cleaner get through to try to fire?

 

[Ourobos]

Yes, cause you are basically throw fueling directly into the top of the engine. If you did that with the starting fluid / carb. cleaner and it didn't even fire off, it's an ignition problem most likely. I'd do the basic stuff, ohm the coil, check plugs to see if fouled, etc.

 

[EB Passed down]

i already checked the plugs, not fouled. i'll look into the coil, maybe the spark is not as strong as i think.