Inspector71

I bought an 84 GSL-SE in February. Finally got to it. Changed the radiator, water pump, coils, distributor cap and rotor, plugs, plug wires, fuel pump, fuel filter, and it ran great. All top dollar stuff too. Car sat two weeks and won't start. It turns over but the fuel pump does not work. We followed all the advice on here about jumping it and did all that. No dice. No now spark from the distributor at all. I have been told it might be the ignitors and or the ECM (if I got that right) on the floor board. The floor board was wet from rain but didn't cover anything. Any advice before I plunk down a ton of money for the box on the floor and igniters? Two more questions: Did anyone make an after market distributor that did away with the igniters and it worked? I was told someone on here has the part numbers for original Mazda parts. If I have them, the local Mazda dealer has been able to find me stuff and they are a huge help. Lee's Summit Mazda. They bend over backward for me. If someone can tell me the part number for the 84 shop manual, they might be able to get it at original cost. Thanks. I hope to drive this car someday.

andernamen

iTrader: (2)

When you changed your pump, did you see a small in-line micro screen filter? What condition was it in? If it was clogged or had rust in it you may need to drop the tank and check things out. There is a test procedure for the igniters in the Haynes manual, but you need some special lamps and such. Check all your fusible links and connections under the hood as well. Could be something simple.

Inspector71

thanks. Didn't see the micro filter but the problem is no juice from the ignition to the pump. Now no juice to the coils.

andernamen

iTrader: (2)

How do you know there is no juice? The pump is not necessarily "on" when the key is turned. Did you jumper the pump at the AFM?

LongDuck

Hey, welcome aboard.

A little more explanation on the -SE fuel system; the fuel pump is only designed to run when there's air coming through the Air Flow Meter (AFM). I just typed this all out for the other new guy stating -SE fuel pump problems, so have a read there. Short version is that you'll either need to remove the air filter and stick a pencil or wooden dowel into the intake to open the AFM door with the key in to activate the fuel pump, or run a jumper wire across the black-rubber-covered plug under the AFM. This is a test plug for checking the fuel injection system doesn't leak without the intake on the car.

Check that first, as it's a common mistake to think the fuel pump would be running 100% of the time in these cars - it's only running when the ECU senses air coming into the engine.

On the coils, these are pretty robust parts. The ignitors can go bad from time to time, but also pretty rare. I'd remove a plug and plug it's hole and ground the body to something solid to be sure you're getting spark.

Remember; Air, Fuel, Spark are all needed, so work in that order.

Inspector71

I wished you lived close by. We'd have this car running again. When I bought it, the car ran rough. We changed everything and it ran great. Parked it and that was it. Hasn't run since. I had 5 before this and never had these problems. Three of them were new. Fun stuff. Thanks for the really good advice. I needed that.

Aquest

I just bought a 1984 GSL-SE a few days ago, and it seems that I'm having the same problem. No power to the fuel pump at all, but it does still work when hooked up to an external battery. The night I got it I checked the spark on the trailing spark plug and it was fine, and I could get it to run with short bursts of starting fluid in the intake. I check my AFM, and everything checked out fine. I also tried jumping the afm connector and still no power to the fuel pump. It read that it could be the fuel cut off relay by the ecu, but I can't seem to find anywhere to buy one. I called lees summit mazda, and they sent me to an older mazda dealership in Raytown that supposedly had old parts catalogues, but alas, even the old dealership couldn't find the part number. The strange thing is that I took off the incoming fuel line to the regulator and tried turning it over and the gas that was sitting in the line didn't move at all, I'm not sure if this means anything is wrong, but I assumed it a vacuum would cause it to suck down to the engine. I am very new to the rotary motor, so I have no clue. Oh also, inspector71, we must not be that far away from eachother, are you in the kc area by a chance?