crank but no spark. Bad Battery, Bad relay?

[DSMeclipse09]

ok I have read some of the threads that is like my answer but I can't find my answer I am looking for. Ok I just did a 6 bolt swap. I did exactly what Magnus said to do. My motor is cranking over, but it won't fire up. When i stop for the night i unhook my battery, well the next day my battery is dead, but when i read it with my Multi meter it says 12.6. so i took it in today and found out it had a bad cell in it. So my question is, could my bad battery cause my no start? when i had it plugged up to my charger it would sound like it is gonna start but then the crank just goes down. Someone shead some light on me. I have been without a car for a while and a tuner race at the local drag strip is coming up.

 

[93talon760]

maybe were u getting fuel to your injectors. and if spark plugs have spark. I would get a new battery. If that doesn't work then check fuel and spark

 

[DSMeclipse09]

ok I am getting a new battery tomorrow, but does anyone know if a relay would keep it from starting?

 

[dsmdeliveryboy]

Yes a relay would keep it from not starting, wait until you have the new battery though before you just to conclusions.

 

[DSMeclipse09]

yeah I am going to wait to get my battery tomorrow, I was just trying to get some ideas first.

 

[beihl304]

U said crank but no spark... That cold be ## cam sensor but test out the simple things first

 

[DSMeclipse09]

well I just did a 6 bolt swap, The 1g Cas cam off of a running car. I did all the wiring the way it said to do it. I did have a fire one time for like 5 seconds, but the head gasket had a rip in it so I tore it back down and fixed it then put it all back together. Now it won't fire.

 

[widsmer]

When mine cranked but didn't start, it ended up being a bad ecu. Something to look into.

 

[DSMeclipse09]

I looked at my ecu, the caps don't appear to be leaking, nothing smells from it. But I will look further into it. I have notice alot of 1g's ECU are frying alot also.

 

[keviebaby]

Check the MPI fuse and relay. The fuse is on the positive connector to the battery and the relay is under the radio, right next to the ECU. http://www.dsmtuners.com/forums/newbie-forum/313628-mpi-relay.html.

 

[DSMeclipse09]

I just did a check on the MPI relay and all is fine with it and the FP relay. When i crank the car it sounds like it is hard to crank. I just bought a brand new red top battery so i know it isn't that. Is there anything else I should check? I did get some back firing but it did not start

 

[esndin]

check the coil pack for proper resistance should be like 1/4 and 2/3 on the voltmeter should be between 11-13 resistance and check if you have spark, alos if you have spark and fuel... sadly check compression and go from there

 

[DSMeclipse09]

I figured out the problem. I did the check on the MFI/fuel pump relay, The MFI was bad, I replaced it and it started right up

 

[mattylt1]