This is a continous thread from my other one about the cdi / coil problems.

now heres the situation. Car starts, but at idle it reads 10-11.4 rich on my wideband, if i disconnect the trailing coil it runs like total crap at idle. like it wasn`t even running on the lead, checked spark at the lead....its good. i`ve checked 12v at the fuel pump, alt., boost sensor, still all is good. This all of a sudden happened on the 4th. I parked the car, went to start it, no guages...meter fuse was blown, so i replaced it, it blew again. then car wouldn`t start, took 15a engine fuse out and put back in, car started. I drove it 50 miles home, it ran fine. I parked it, it did the same thing, but this time it never blew the 7.5 meter fuse. it got spark, but no fuel. i did the fuel pump jump, never heard it run. I pulled the pump out and hooked it up to my battery direct. it worked!! Put it back in, started car right up, but its like its only running on trail coil pack. i changed the lead coils, and no diference. car is insanely rich and bucks under boost. like its not hitting on the leads. I`m lost and ready to part this piece of **** out....i`ve spent the last year fixing all of mazdas junk electronics, wiper switch, cpu, logicon. regrounding, uel pump rewire, 3rd gen alt. upgradedid all my mods, upgraded turbo, fmic, exhaust. I`m at my last straw with this car. Funny thing is, i haven`t had a problem with it until now.....i can`t even drive it cuz of this condition..........

Thanks for taken the time to look at my situation!

-SLICK

 

ok.....i have no spark on L2. this is the second coil i`ve put in the car. could it have been dead too?

 

The same coil for L1 is used for L2. If one fires the other should. Unless the sparkplug wire is shorting to ground for the one not working. That is the ONLY way you could have a situiation like you describe.

Seeing as how L1 and L2 fire at the exact same time, swap the L1 wire to the L2 and vice versa and see if your problem travled to the other place.

Another fun thing to do is to pull both wires out of the coil bore and then reinstall them just barely in the bores of the coil. Start the engine. Now don't touch the chassis or rest your body on the chassis. PUll one wire at a time out of the bore just a touch. Say a 1/16 to 1/8 of an inch. You should see a arc b/t the coil bore and the end of the wire, confirming that the coil is firing on both.

 

thanks hailers. well i tried new wires, still same problem. i took one of my old lead coils and put it back in and, walla i have spark. now my tach sits at 600rpm with engine off. any idea why it did this? i believe that mt trail coil went south, popping the 7.5amp meter fuse for the tach. am i close or just reaching for answers. i usually can work problems out, but this just really is getting the best of me.