So here is my problem, car does not start, only starts when i spray starter fluid into manifold. Sorry forgot its an 88 dx hatch with obd1 b16. So many will ask all wiring has been done and has worked fine in my previous mpfi motors. so my car was sitting for about 5 months and ive only started about 3 times during those 5 months when i had my ls in it. any ways i pulled injectors and nothing was coming out of them when i would try to start. I trouble shooted injector circuit like manual states to, my grounds are fine, all fuses are fine, fuel pump works, and i have fuel pressure, resistance at every injecto is 2.4 ohms, specs are 1.5-2.5 ohms so i know i have good injectors. the only test that came negative while i was trouble shooting injectors was the positive wires at each injector plug. i had no battery voltage, so next step was to check for voltage at yellow/black wire on resistor plug and also no voltage. i then checked for voltage coming out of big engine harness plug located on driver side to see if i had voltage there and no voltage either. therefore i check for an open circuit in the wire that runs from the main relay to the injector resistor box, and there was continuity. so that lead me to think that i could have a bad main relay. i did some research and i noticed ppl say main relay can go bad if your car sits for a while and weather is hot, I live in Las Vegas, and weather is really hot. so then i tested main relay like manual states too and main relay came up good. which makes no sense cuz then that leaves me at a dead end. Can my fuel pump still work if relay is bad? what can be my problem?

 

ecu, maybe? replace it with a konwn good ecu.

and i do believe the main relay can give the pump power but not let the injectors work, if the relay is bad. listen for the clicks in the relay. there should be 3 clicks. one click in key position two, one click in key position three when turning the starter, and one click when position three returns to position two. somebody correct me if im wrong, but im sure that information in correct.

 

yea ive tried 3 known working ecus and i dont use start position in my key cylinder cuz i have a push button for starter

 

eek.. may be a problem with the push start?

check all grounds.

run to the local j/y and pull 4 or 5 main relays.. much cheaper than paying 50-60 dollars at an auto parts store for just one main relay. and they fit on your pockets with room to spare..

 

iv had a ton of injector problems in the past year with a head swap, btw. first my wiring was bad, then it was main relay, then it was clogged injectors.. finally it came down to bad gas after all that time

could be multiple things.. keep us posted

 

thanks appreciated i will

 

yea im having the problem with a 91 integra the only time it starts is when sprayed with starter fluid n than when you tach it to 3 grand it starts to break up n die out i have checked the timing put a new ecu in and tryed the main relay any suggestion on what might be wrong