My 3.0 will not fire. the battery is strong and turning the engine strongly. I removed the plug wire and grounded while turning the engine and had orange spark. the ground was the exhaust and not the best ground because of the rust on it. However, I had spark. It at no time seemed to fire. what are the possible problems. If you can please help
The rust on the exhaust will hardly inhibit a spark of the proper power. The spark should be a blue colour and jump with a sharp noise like a shot.
A graduated spark gap is the best way to measure the spark power. A modern engine ignition system needs to produce around 30,000 volts in order to start and run smoothly - that equates to a gap of around 3/8" or 10mm.
SOURCE: strong order of gas fumes and black residue on spark plugs
The jets in the carb are too big for a 302 with a stock cam. Take it to a carb shop and have them replace the jets with stock jets. (Or DIY and hope). Whne you converted from FI to carb did you replace fuel pump to get correct 7 1/2 psi pressure at carb inlet? FI pumps put out 50+ psi and a regulator maintians pressure at the injectors on the order of 35 psi.. Of course, that much pressure would force inlet needle valve out of it's seat and would probably flood carb totally, but, check the fuel pressure at the carb just to be sure. Good luck. 302's rule!!!!
PS - Check cam specs - FI engine has different cam - intake duration is longer if I remember correctly. Been a while since I got inside an engine...
SOURCE: car won't start, battery seems good, lights come
in this case i would suspect ign key or a dirty earth wire look at the battery terminals and make sure they are clean i would say its the low power wire from the ign to the starter a smaller wire to the center of the starter//broken,you likly had start /on off before this happened.adrian,,,,,
SOURCE: FORD cortina 3.0L V6 starting problems.recon tops
Have a look at the coil and its supply lead, standard it has a 9v coil and a resistor wire in the harness, this gives trouble ar resistor wire is odd and will not solder or weld and its expansion when hot loosens crimps! If you put 12 volts into a 9v coil it overwhelms (magneticly) the windings and gives a poor spark, also burns the points.
SOURCE: 1992 Ford Festiva engine getting
Sounds to me like a classic case of a failed or slipped timing belt. If your timing belt is worn, stretched out etc and it slips a few teeth your car will not run, but it will still spark, just at the wrong time. Pick up a timing light for 40 bucks before you go throwing hundreds of dollars into parts you don't need. Check your timing on #1 cylinder v/s the crankshaft pully marks. If you don't know how to do this already I will explain it if you ask me. If you are not getting spark at all, then your belt may be completely broken. So, you have to determine if you get spark, and if it is timed correctly. Buy that timing light, it comes in sooo handy. It will pay for itself very quickly because you wont be pouring money into un-necessary parts.
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