My SR runs like a subaru engine

[koukistylejdm]

the car did well the whole day exept a bit of missfiring problem at high rev..
then after a few cutoff on neutral it started to run rich and sputter
it revs like a subaru

Looks like it run on 3 cyl.

Wideband = 10.. extremly rich

compression is 135-135-135-130

spark plugs are fine coil packs were changed no difference

the plugs were all blaCK even

vaccum is reading a bit low on idle (14 instead of 18)

fuel pump sound a bit different

tuned with aem ems serie 2

with map sensor

[Sileighty_85]

If spark is good and plugs gapped correctly then fuel injectors stuck open or torn O-rings in the fuel rail

[koukistylejdm]

you mean the 4 injectors should be gone like bam?

[dopplganger1]

I had the exact same problem and it was a bad injector and it went with no previous signs either I was driving along then bam subie!

[hOngsterr]

way to check for a dead injector is to have the motor running, and unplug each injector one by one, the one that does no effect on the motor meaning thats the dead injector.

[240sxDavid]

Another way to check if you have a dead injector is to get a long screw driver and put the tip of the screwdriver on the betal base of the injector and put you your on the handle end and you can here it working/ticking...if no sound. Than you have a dead injector

[b14 se-rious]

leave the injectors in the rail, un bolt the rail.

Turn ignition in ON but dont crank

Check if o rings leak

Then unplug your coils and have a friend crank it over and check if all 4 are spraying

[koukistylejdm]

yeah the fuel rail is under the manifold on s14s thats what sux a bit

[koukistylejdm]

ecu display injector pulse good

got bad timing error

coilpack charge was uneven on each cyl on idle

[koukistylejdm]

coilpack 1 charge on idle was 22.2teeth
coilpack 2 --16.7
coilpack 3 --4.7
coilpack 4 --10.7

any clue $^&*(*([email protected]#

[koukistylejdm]

so btw the issue was comming from fuel obviously so y removed the fuel rail to see if leaking when the ignition was turn on... no

then i cranked it to see if they all spray and one of them is weak. spray aint powerful compared to others

[wangan_cruiser]

Ohm the injector. Or try to use fuel cleaner

[drift213]

Worth a try my ignitor chip was not sending signal to one coil that was my problem long time ago change it with a friend see of it does a difference

[koukistylejdm]

the problem was finaly............. a rocker on the exhaust side

[Davidna2fi]

the problem was finaly............. a rocker on the exhaust side

Ouch...more description of what happened