What Stops Injectors From Workin

[falky929]

i have a rb20det 3 of my injectors have stoped working any one no whats going on

[lachlanw]

the other 3 kick in on vtec

[Rolls]

Clogged up due to crap filter and rusting tank or having them sit around for a year and dry out.

That or the seals can go and they can leak but they will still work.

What happened to them?

[Crans]

if you are using a stock ecu i suspect a wiring or ecu problem. Rb20 injects fuel via 2 banks of 3 injectors

[jangles]

yeah, if its the front 3 check the plug that they connect into the main loom

[Crans]

Also open up your ecu and check for burn marks im thinking it could be a blown injector driver

[falky929]

cylinders 1,3,5 arnt fireing its def a fuel problem cause the spark plugs in cylinders 2,5,6 when u pull them out after having the car runing plugs are wet with fuel and smell like fuel changed my ecu with another rb20 one did the same thing suspect its a wiring probem but have checked the wires seems to be fine

[zebra]

If the plugs are wet then the injectors are working.

Have you put some new plugs in the thing yet?

[zebra]

Opps my bad, just read 1,3 and 5 aren't firing and 2,4 and 6 are wet.

have you pulled the injecotrs out?

[falky929]

If the plugs are wet then the injectors are working.

Have you put some new plugs in the thing yet?

the plugs arnt wet in 1,3,5 thats why it aint firing yeah changed plugs made no deffance

[falky929]

na havnt yet was trying to get my hands on a led test light tonight to make sure there pulseing

[falky929]

cyliders 1,3,5 dont have have any injector pulse any one no why?

[ben3322]

cyliders 1,3,5 dont have have any injector pulse any one no why?

check the suspect injectors for continuity.

[falky929]

check the suspect injectors for continuity.

checked the circut in the injectors that arnt workin to the computure circuts fine changed the the computure over with another rb20det comptuture made no difference changed the cas over with another made no differance

[Rolls]

Check the injector pins on the ECU with a test light see if the problem is in the loom or at the ecu end, as you tried a different ecu almost certainly the loom somewhere, just keep tracing it until you find the issue, pain in the ass but not much else you can do.

[biddy]

This happened to me a few years ago on my pulsar gtir after I installed a fmic. I accidentally disconnected something but cant remember what its called. it might be a resistor pack or something for the injectors..

Anyway its the silver box thing on the passenger side, under the bonnet just near the top of the suspension turret. its got a plug on it with a few wires coming out of it.

[Rolls]

rb20det doesnt have a resistor pack only the ca18s I think and rb26s unless of course he has done a gtr injector swap.

[biddy]

It may not be a resistor pack. But my sr20det definitely had this plug thing that controlled the injectors. The silver part was just a shield that covered the plugs and I think there was 2 of them. I accidentally put tension on the wires with one of the stainless pipes I installed for the fmic which was enough to break the contact on the plug.

[falky929]

ive ran earth through the injector wires in cylinder 1 to the compture so im sure its not the loom :? i really dont no what it can be now

[Rolls]

ive ran earth through the injector wires in cylinder 1 to the compture so im sure its not the loom :? i really dont no what it can be now

what do you mean you ran earth through the injector wires?