injectors or coilpack ????

Post by **natguerrero** » Sun Dec 16, 2007 1:22 pm

i have the car at idle and i start unplugging the injectors from the top and i get to the third one and nothing happens i also unplug the coil and nothing happens ...

this means a bad injector ??

Post by **duffman1278** » Sun Dec 16, 2007 2:16 pm

Probably both, does your car stay at idle? Check the spark plug also and down the cyclinder to see if its wet

Post by **natguerrero** » Sun Dec 16, 2007 2:21 pm

yeah it stays , nothing happens but if i pull another it starts to shake and hesitate

Post by **duffman1278** » Sun Dec 16, 2007 2:39 pm

Thats odd, usually it''ll turn off, but take out the coilpack that you said nothing happens to it when you take it out and check for resistance between the 2 prongs. Its in the FSM page "EC-202" also check the resistance on the fuel injector.

Post by **natguerrero** » Sun Dec 16, 2007 3:57 pm

FSM page "EC-202"whats that ??

Post by **duffman1278** » Sun Dec 16, 2007 6:28 pm

Download this and read it FSM=Factory Service Manualhttp://www.240edge.com/manuals/s14-sr20det.html

Post by **codyace** » Sun Dec 16, 2007 8:19 pm

I hate to sound like a pesimist, but you could also potentially have cracked or melted a ringland....

Post by **natguerrero** » Mon Dec 17, 2007 2:12 pm

what are other symptoms of a bad ringland ????

Post by **lhoy12** » Mon Dec 17, 2007 2:17 pm

Get a compression tester and test compression. Also grab a shop rag, pull your whole fuel rail, and crank it a couple times to see if your injectors are spraying.

Post by **natguerrero** » Mon Dec 17, 2007 2:30 pm

alright sounds like a deal and if the injectors are not spraying ??where do i go from there ?

Post by **duffman1278** » Mon Dec 17, 2007 2:37 pm

Than you need to replace the injectors. But since you unplugged them at idle and you said the third one had no affect than your third one is bad, try replacing that.

Post by **BuLLeTdrift** » Mon Dec 17, 2007 3:56 pm

ugh, reminds me of when my **** was running on just 2 cylinders. Easy way to see if its the injector, or coil pack, just switch them out with ones you know are working. IE, if its the third that is not working, take the injectors out of 2 n 3 and swap em. If nothing happens, do the same with the coil packs. If nothing changes, its obviously a different issue. OR if the problem stays with the injector or coil pack into the 2nd cylinder and the third is fine, really obvious its an injector or coil pack issue.

Edit: about what duffman1278 just said above me...just because its not firing off in that cyl, doesn't automatically mean its the injector. could still very well be the coil pack. just do the diagnostic run thru i explained to narrow it down more.

Post by **duffman1278** » Mon Dec 17, 2007 4:16 pm

tru tru, just switch them around and see what happens on the injectors

Post by **codyace** » Mon Dec 17, 2007 4:52 pm

duffman1278 wrote:tru tru, just switch them around and see what happens on the injectors

....and if they are good, I would be doing the compression test for sure.

My car idled fine, sounded good, and drove just fine (like 35 miles) on an engine that had melted the side of a piston off. Obviously down on power, but idling it was good. I changed sparkplugs, swapped packs, and swapped injectors all on the side of the road....when I got home I everything off of it, took th emotor mount, and found my issue.....

Post by **natguerrero** » Mon Dec 17, 2007 8:55 pm

alright lets hope that its just an injector and nothing internal ! because that just wont fly right now !!!

ill check it all out tomorrow and get back to yall later thanks !

Post by **duffman1278** » Mon Dec 17, 2007 9:20 pm

Goodluck man, I'm having issues with my injectors as well, let us know what happens

Post by **lhoy12** » Mon Dec 17, 2007 10:16 pm

If you pull the whole fuel rail and only your 3rd injector isn't firing, check your wiring harness and make sure that it got wired correctly. When I had my wiring harness done, they incorrectly wired my #3 injector. It got clipped and reconnected to the wrong grn/black wire so I just clipped it again and resoldered to the correct grn/blk wire. Just one more thing for you to ponder;)

Post by **codyace** » Tue Dec 18, 2007 2:36 am

...sounds odd but you guys (not ilhoy as much) do have all of the grounds connected right? like the ones on the back of the head/firewall....

Post by **natguerrero** » Tue Dec 18, 2007 12:48 pm

yeah i just re-did the grounds the same day i figured out that , that injector wasnt firing !

Post by **natguerrero** » Tue Dec 18, 2007 1:35 pm

yeah ! so before i swapped the injectors , i swapped the coils so i moved the 3 coil to the first coil started the car and started to unplug the injectors now the first one did nothing and the third one reacted like the others...

that must mean the coil is BAD ! now i need coils !

yet to do the compression test , what should it be rated at ??

Post by **BuLLeTdrift** » Tue Dec 18, 2007 3:14 pm

now wasn't that better/cheaper/faster than just going out and buying a new injector?

I believe compression should be like 145-160 i think. do a search and you'll find it quick.

injectors or coilpack ????

injectors or coilpack ????

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