injectors???

[cornwhiskey]

i have done a rb20 swap in to a 1989 240sx...and i have no codes flashing..but injectors 1 5 and 6 are not spraying.2 3 4 are working fine...does anyone have any idea whats going on? thanks

[mello88]

It's probably one of these three things: you have bad wiring, or burnt out injector drivers on the ECU, or those injectors are clogged/toast.

Try checking the continuity on each injector wire, from the injector connector plug all the way back to the ECU harness connector. I think you'll find a short or bad connectors somewhere... If you find that all six wires check out good, then pull the rail off and swap injectors #1 and #2 to see if the problem follows the injector, or stays on the cylinder... That will tell you if it's bad injectors or bad ECU.

[cornwhiskey]

ok ill try that tonight ...thanks again.

[d356bud]

ya I would check to make sure you have a good ground on those injectors

[cornwhiskey]

ok got the injectors fixed there was 3 bad ones now that it is running on all 6 it idles at 2000 to 2500 any ideas.

[Carl H]

tps is probably out of spec...ensure that the idle switch is engaged.

[darkstar575]

Wow I wish my problem was that easy...None of my injectors are firing...My relays are buzzing after I try to crank it also...