Ok I have a 1994 Cobra with 600 miles on it. Sat waaaayyyy too long......had to drop the tank and replace it and the fuel filter last weekend. I got it to start on ether but shuts off after it's burnt. Now that it will not start I have checked, fuses, shut off in trunk, power at distributor cap, spark at wires, fuel pressure, power at injectors, pulled the injectors and soaked for two days in seafoam, noid light on injectors worked as should. Probably a couple other things but I'm about out of options other than maybe the injectors are just totally gunked up and need replaced?? Any ideas?? Thanks in advance.
Crank, No Start
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Well, did you take a magnifying glass and a good light and inspect the injector inlets? Were the micro-screens clean? I have on occasion set myself up a battery with an old injector connector, had the injectors/rail pulled up with rags under them blocking the injector ports (don't want to get a bunch of raw fuel in the engine) powered up each injector by tapping on the battery with pressure in the rail. Gotta watch it though, sometimes there aren't any locks on the injectors and they can literally shoot out of the rail, but you get the idea. The dealio is that direct battery being applied momentarily will quite often un-jam stuck injectors. Also, there is an outfit in S Florida called FuelInjectorMan who has great prices and service. You said that it no longer starts? Even with a shot of carb cleaner or starting fluid? Maybe the plugs are finally crapped out?
jozsefsz
15 Year Member
I had a similar problem with my dad's '96 v6, <1k original miles, and hadn't been driven in 15 years (with a quarter tank of varnished gas). It really shouldn't have clogged up the injectors (eventually the fuel will drain out of the rail when it sits a long time and the fuel filter will catch most of the gunk), especially all of them would be surprising. I'd expect you'd hear at least a few cylinders try to kick over, but with all that you've checked, and since it starts with spray the ignition's working well, I'm struggling to see what else it could be.
You mention you'd checked the fuel pressure, how did that look? You might also want to check KOEO codes just to be sure, you never know if some rodent happened to chew some wires for you over that time too. Worst case, a set of new injectors won't set you back too far.
You mention you'd checked the fuel pressure, how did that look? You might also want to check KOEO codes just to be sure, you never know if some rodent happened to chew some wires for you over that time too. Worst case, a set of new injectors won't set you back too far.
Well I followed the steps in this video to rule out my injectors.....
View: https://youtu.be/rLuAVhVp44Y
tested my injector vs a working one though the AA battery wasn't enough power to work either of them a car battery did the trick on the good injector and mine did nothing
so I at least know where my problem lies.... thanks for the replies guys.
View: https://youtu.be/rLuAVhVp44Y
tested my injector vs a working one though the AA battery wasn't enough power to work either of them a car battery did the trick on the good injector and mine did nothing
so I at least know where my problem lies.... thanks for the replies guys.
jozsefsz
15 Year Member
You could try to free them up yourself with some seafoam (or similar) on the inlet, and alternate the current (+/-) a few times. Tapping on the body might help too. But if they're really stuck, a professional cleaning or just replacing the set might be the best.
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