Fiero No Start (Page 1/2) AstroChemist MAR 01, 12:16 PM I recently changed the timing on my 86 V6. I'm confident that the timing, wires, distributor etc are done correctly. The car sounds like it turns over while I'm cranking but immediately dies out after I stop. I was able to get it to run for a little on carb cleaner so it's almost for sure a fuel issue. I wanted to come here and see what your guys' opinion was before I decide to drop the tank. I hear the fuel pump come on when I turn the key to on. The engine seems to get fuel only while cranking. So I don't think that the fuel pump is bad. Any suggestions for what it could be? There seems to be a lot of people saying in this forum that it's probably a blown fuse but I can't find any. 1985 Fiero GT MAR 01, 01:22 PM It could seem to be timed right, but if the spark is somehow happening at the top of the exhaust stroke, it wouldn't work, there are 2 fuses for the injectors, they need to be working, make certain the coil is outputting spark that jumps at least 1/4". AstroChemist MAR 01, 04:29 PM quote Originally posted by 1985 Fiero GT: It could seem to be timed right, but if the spark is somehow happening at the top of the exhaust stroke, it wouldn't work, there are 2 fuses for the injectors, they need to be working, make certain the coil is outputting spark that jumps at least 1/4". Coils good and sparking a bit more than 1/4 inch less than half an inch. If it was exhaust stroke couldn't I rotate the distributor 180° and it'd run? Nothing bad really awful timing and backfire if I do that. I'll double check the fuses, everything in the fuse box seems fine to me. I might just put all new ones anyways since they're cheap enough. Someone said maybe cold injection is working but regular isn't since it runs while cranking but dies immediately after. It's not likely though that every injector died at once right? David Hambleton MAR 01, 06:54 PM Did the engine run before you worked on it? Why and how did you change the timing? Can you hear the fuel pump run for a couple of seconds when you turn the key to the on position, then it stops running? Patrick MAR 01, 08:13 PM quote Originally posted by AstroChemist: I hear the fuel pump come on when I turn the key to on. The engine seems to get fuel only while cranking. So I don't think that the fuel pump is bad. Remove the guesswork and check the fuel pressure. Check it while the pump is priming, and check to see how quickly the pressure drops when the fuel pump stops. AstroChemist MAR 01, 08:56 PM quote Originally posted by David Hambleton: Did the engine run before you worked on it? Why and how did you change the timing? Can you hear the fuel pump run for a couple of seconds when you turn the key to the on position, then it stops running? It was baaaaaarreeely running when I got it, I swapped the distributor and wires. I pulled the distributor completely, rotated the crank until it was at TDC (checked with pressure and a screwdriver to feel for the piston) then I plopped the distributor and distributor cap back on, and wired everything up clockwise. AstroChemist MAR 01, 08:58 PM quote Originally posted by Patrick: Remove the guesswork and check the fuel pressure. Check it while the pump is priming, and check to see how quickly the pressure drops when the fuel pump stops. Rented a pressure kit. I'm sitting around 45 psi, pretty solid. I think fuel pressure and injectors are fine based off that. I'll triple check timing and see what's up. I'll check the fuel filter maybe Patrick MAR 01, 09:56 PM quote Originally posted by AstroChemist: Rented a pressure kit. I'm sitting around 45 psi, pretty solid. I think fuel pressure and injectors are fine based off that. I'm assuming then that it holds pressure when the fuel pump stops? quote Originally posted by AstroChemist: I'll triple check timing and see what's up. Might have a look Here. 1985 Fiero GT MAR 02, 12:50 AM spark should be more then adequate, if fuel pressure stays, and your injector fuses are good, then that would make me think it is timed incorrectly somehow, make doubly certain that all your wires are hooked up correctly, and that you hook up to the correct plug wire for timing, seems counter intuitive that #1 is rear right, but that is the one to hook up to, along with #4, the front center. also make sure you time off of the correct mark on the harmonic balancer, my dad timed his fiero off of a scratch or some other mark, and it ran absolutely horribly until he finally figured it out. Patrick MAR 02, 01:59 AM quote Originally posted by 1985 Fiero GT: ...and that you hook up to the correct plug wire for timing Here's a tip... forget about using the "correct" plug wire. Connect the timing gun to the high tension lead that goes from the coil to the distributor. Seriously.