My Injector problem (Yes I searched first!)

[Ezzo]

To start off I have a 91 s13 so it's the DOHC.

When I bought the car the 3rd cill was misfiring. The previous owner told me he thought it was an electrical problem so he replaced the distributer, wires, cap, rotor and plugs. so he narrowed it down to the 3rd injector not spraying. Yesterday I replaced the 3rd injector it worked great, car ran like new. I drove to work and back, but on the way home it started to missfire so I thought the o-ring didnt seal properly on me. Turns out that #3 is firing fine but now injector #1 decided to crap out on me... it was late so I left it for thismorning. I went out and checked out the first injector, one of the two skrews holding the plate ontop of the injector down was striped, so i think the previous owner tryed to take that injector out before. So I disconnected the battery, released the fuel pressure, and pulled the injector, put the new one in and reconnected everything. The same way I did it for #3. but this time I goto start the car and there is just one loud click like the engine is trying to turn over then nothing. I tryed it a second time and I got a low pitched squeel like metal trying to force itself somewhere. I stoped trying to turn the car over and looked over EVERYTHING I had just done. When I examined the bad injector i took out there was no O-ring and no cap on it.. leading me to think that they are now inside the intake manifold or even a cillinder? Not sure where to go with this problem now. Worst case scenerieo I have a spare KA if I need it. I never had to deal with a foregin object inside the engine before. So any and all help would be appriciated. Thanks for taking the time to read my post.

[Ezzo]

Bump... anyone?

[S13 240SX]

i had the same problem with injectors... kept replacing o rings and seals.. kept leaking on me.

i tired different injectors, with the rings on them already, i rub some vassoline on the o ring like i was told to do on this forum.

once i re went and did that i never had a problem with leaking injectors again.

tried lubeing up your o rings with some vasslione, or different injectors.

[Ezzo]

no the replacing the injector isnt my problem... the engine wont turn over now after i replaced the number 1 injector i think that maybe the old o ring and cap are stuck inside of the valves or there is no fuel pressure. i reinstalled the fuse and turned the key to accessory a few times to prime the fuel lines like all the write ups said to do but it just wont even crank, just one click and it wont even crank.

[Ezzo]

last bump...

[AeonTorpor]

It's possible that when removing the injector the cylinder may have flooded with gas if the line was not purged properly. Having the engine not spin isn't a fuel problem unless it's the fuel that's hydrolocking the engine.

If something was cought in the valve train, like an o ring and a little plastic cap, they would be smashed, i don't think that would stop the engine from turning (IMO).

These may prove helpfulhttp://forums.nicoclub.com/zerothread?id=120425http://forums.nicoclub.com/zerothread?id=142968

[blckkat]

I agree those pintle caps are crappy little plastic pieces. did you check to see if the o-ring was still in the rail? hard to beleive that got pushed into the manifold. pull the plug on the cylinder and try to turn the motor over or if your worried about debris in the cyinder you could try compressing the cylinder with an airline (need a compressor) and hold your throttle plate open maybe you can blow out any debris?

[Ezzo]

thanks a lot for your replys, I havent goten out to try and unflood the cillinder yet but after I read those posts it all clicked. so it makes a lot more sence now.

[AeonTorpor]

Woot, glad i could help. Hope you get that fixed. Keep us updated. After having that problem myself i really want to do as much as i can to make sure no one else here has to go through that, or at least pay like i did.

[Ezzo]

ok good news and bad news....

i got started today, pulled the injector, dumped the oil, changed the filter. sucked all of the gas from the cillinder. put a cap full of oil in each cillinder to try and reseal the washed piston rings. put the new injector in with new o-rings.

get in, turn the key, the engine cranks freely now but it wont turn over. checked all of the plugs, wires, made sure we had the correct firing order. couldent figure it out, get back in try to crank it again, it starts to crank really slow now and the cluster lights dim (seatbelt, oil, check eng ect) still can't get it to turn over. i pulled out the dip stick and the new oil looks thin and still smells like gas, i think that the rings are still washed, or i couldent get all of the bad oil out. im about to take it to a mechanic and have them flush the engine if i cant figure this out. No compression from washed rings? the car sat with gas in the oil since monday. its friday now.

any sugestions would be appriciated

[AeonTorpor]

Yeah man, that's where i was. The gas sitting in the oil will just turn it to varnish basically. After you get compression again your engine should be good.

Yeah, if you have no compression again, try adding a little more oil to the cylinders again and letting it sit for a while, let it seal, then you'd have to change the oil again. Hm.. other than that, if it doesn't work again, you could try some trans. fluid. But after you get that sealed you need to change your oil again.

I really wouldn't want to take it to the mechanic, cuz you should be able to reseal the cylinders yourself, but if they don't charge you up the wall for that, then that's alright (<$100).

[Ezzo]

haha thanks a lot dude i was rummeging thru your thread to find something and your quick on the reply i came back to make an Edit:, do you put the oil in the cillinders before or after you drained the gas/oil mixture? what was the order you did it all in. im thinking there washed but yeah im almost there lol i got a good deal on the oil anyway so im not too upset lol

[AeonTorpor]

As long as there is no more gas in the cylinders (the hardest part to get out). You just need to drain the oil, put some oil in the cylinders through the spark plug holes, refill the oil, let it sit for a little while and seal. And try to crank it up again.

Those o-rings on those injectors were a pain in the arse. Taking those out over and over again is what made me decide to be lazy and take the injector out w/ out taking the whole rail out, which flooded the cylinder. I emptied the cylinders w/ a spray bottle top deally w/ really long tubing. Sorry for the eradic times of the post times too, it's Friday, i'm all over the place, lol.

[TrueSlide]

your probley gonna have to replace your plugs too, they are fouled out.

[AeonTorpor]

Shooot, I had NGKs and for that much money for spark plugs, i just cleaned em'. They still work fine and that was over 6 months ago. But i guess if you have some cheepos, might as well get new ones.

[Ezzo]

haha yeah that came acrost my mind, the prev owner put bosch in ... but in my neck of the woods I cant find NGK's anywhere! im going to go scavenge around for them again today. all anyone has is autolite and bosch. I just want some NGK coppers lol but thanks for the advice im gonna give it another go today.

Edit: we sucked the gas out of the cillinder with a sport bottle a lot of electrical tape and some straws. it worked pretty well.

[Ezzo]

Update! I finally fixed it a few weeks later. yeah I sound really newbish. turned out I used too thick of an oil I used a 10w30, I purged the cillinders and used 2-3 capfulls of Marvels mistery oil, let it sit for about 45 minutes then a shot of eyther in each of the cillinders. put the plugs back in and it fired right up! now I can finally enjoy it for more than one night lol now that it runs fine without injector problems I noticed an exhaust leak so ill add that to my "More **** to fix" list. Thanks a lot AeonTorpor and everyone else who replied to my post youve been a huge help

[medapimp4aday]

i blew my engine because of a simular problem which ended up being my ecu