help my start my SR!

[lilpiton]

So I took apart my front end : fenders bumper intercooler. and i took off the valve cover so I can get it powder coted. When I got it back and went to start my car it don't start. I checked pretty much everything and I cant figure what is the problem. It got fuel, its all grounded and no spark!! I did almost everything I could have and I cant find what it is. I didn't do anything with the motor or the harness ,but take of the valve cover.
If you got any thing to share with me to help me start my car please let me know.
Ill take anything you guys got.
Thanks Tom

[Taylor008]

Put the valve cover back on.






LOL but really. Cranks, just no spark right? Ignitor chip? I got nothing.

[lilpiton]

thats what my buddy was tellin me and i got the s15 sr and i have no igniter chip. idk if the dont have one, maybe build in to the ecu?

[s13_chris]

engrish is herra hardz to learnz huh. or urs so ignoranttes youz canTs shpelz. PLEASE TYPE LITERATELY!!!!!!! I'm not trying to bash your thread, but this is also the wrong section. And if your car started before you did this, YOU need to go outside and double and triple check your work. Check all wiring you may have even brushed up against. But please. PLEASE. Spell correctly. Its an annoyance to try and (I'm exaggerating) decrypt messages while trying to help people. Thank you.

[OutToWinPAHC]

Valve cover... no start..... cam position sensor

[kouki munster]

He shouldn't of had to take the cas out to pull the valve cover, and the s15 sr has the igniters in the the coil packs.

Go back over everything you touched, make sure the coil pack harness is plugged in, make sure the ground for the coil packs it grounded, the ground is on the coil pack harness and comes out of the harness at the back of the head right when it comes out from under the coil pack cover. If you took out the cas, put the engine on tdc (the #1 cam lobes should be facing away from one another) and install the cas according to the fsm. (It will be the same procedure for s13, s14, and s15 so it doesn't matter which fsm you find)

[lilpiton]

No I didn't take out the cas. I took out the spark plug today and closed the garage door and you can see a very very tiny spark when its dark in the garage...
Thats weird! I double checked my work and still got nothing...

[kouki munster]

Hmmmmm....... sounds kind of like something isn't making a good connection, check everything and make sure that it has a good connection and that there aren't any broken or frayed wires.

[Seanzyyy]

engrish is herra hardz to learnz huh. or urs so ignoranttes youz canTs shpelz. PLEASE TYPE LITERATELY!!!!!!! I'm not trying to bash your thread, but this is also the wrong section. And if your car started before you did this, YOU need to go outside and double and triple check your work. Check all wiring you may have even brushed up against. But please. PLEASE. Spell correctly. Its an annoyance to try and (I'm exaggerating) decrypt messages while trying to help people. Thank you.

you know what he meant.
smartypants

[lilpiton]

So i checked it out and i cant really see any bed wires or a week connection. So im gonna get a new set of plugs tomorrow and borrow a coil pack harness from this guy in town and go from there.
Ill update after words.

[PyR0NiAk]

You sure you're getting fuel?

[lilpiton]

Yes im getting fuel. took the injectors out and crancked the engine. About 4000 miles before I took off the valve cover i realized that the car started runing a bit richer. It would backfire alot more then it did before and and the fuel gauge went down faster. I thought not much of it cause it was nothing that broke, so I just kept on driving. So Im starting to think that something might of happened and its got nothing to do with me taking off the valve cover.
The big question is what is wrong with it?
Im loosing my mind with this thing!!
Maybe my ECU is bad? can it be? Is there a way i can check it?
Nobody I know has an s15 sr around where i live...

[PyR0NiAk]

MAF sensors cause them to go rich... Unplug it and see if it'll start in limp mode

(It should start and hold idle around 1000 rpms... If you give it gas lightly you'll get it to 2000 to MAYBE 3000 rpms but it'll be hard)

[lilpiton]

I tried to start it with the maf unplugged and nothing.

[PyR0NiAk]

So you have fuel, you have spark, and you have compression... Only thing left is timing, man...

[lilpiton]

I didnt touch anything with the timing. Its set to 15* BTDC.
And yes, I have fuel i have compression and no the spark is the problem here. I see the spark but its really weak.

[PyR0NiAk]

Makes sense... I missed that earlier... My bad... Long day.. Either way, I don't think your ECU is an issue here. It's got to be a wire issue.

[CRyan]

Try making another ground somewhere, just something to throw out there. Or maybe somehow your plugs fouled? Figured I'd put that out there too.

It is apparent that you are making power TO the plugs, so you should be getting a spark (in your case, a faint one). You have fuel as stated, and apparently air. Your timing shouldn't be off unless you decided to hulk grab a cam and strip your chain to make it off timing. My only guess is that its not enough of a spark to get it kicking.

Wait. Check plug on throttle position sensor. I had some retarded stuff on mine happen similar to this with my S14A SR.

[lilpiton]

Added a fat ground got new plugs tried to start it with the MAF unplugged and still nothing.
Ohh and I checked the TPS plug and it lookin fine to me.
Looked thrugh my harness and I soo nothing bad.

[lilpiton]

will a s14 sr ECU work with my s15 sr??

[gigabit240]

will a s14 sr ECU work with my s15 sr??

It might but i doubt it.. After reading some of this theres no way its your ecu.. You should check the wires that plug into it though. Acecool had a similar problem and he figured out that his engine wasn't starting because of one little orange ignition wire. He has an rb20 but he still might be able to help you because of the similarity in the problem. Is this what you motor is doing? http://www.youtube.com/watch?v=faQ0Ja2CyXA

If you are getting spark and its very week then it might be time to replace those coil thingy's that are on top of the spark plugs on SR's. Sorry i don't know what they're called though.

[lilpiton]

So a few months passed and my car is still standing.
I really need someone to help me out here. Im so lost already with this problem.
I checked pretty much everything but the ECU, and thats cause I have noone around chicago that has an s15 SR ECU so I can swap it.

[CRyan]

Have you tested your timing, just for the "its not that" motive? I would do it just in SOME WAY something could have been accidentally tampered with.

Also, if your pulling weak spark, ohm your coilpacks, they should have like 1.3 ohms, voltage should be 12.6.

What else. Hmmm - Check tps, knock sensor, engine coolant temp sensor. Make sure your ground is to the chassis, and then jumps to negative on your battery.

Have you checked the springs in your coil packs? Take a wire brush to them to get some new metal on the plugs.

Thats all I can think of man, I hope it helps - I hate to see a downed SR, especially because I have to look at one every day.

[White Comet]

hmmi had something like this happen with my s13 sr turned out the ground wire for the ignitor pack harness got pinched when i put the valve cover back on so my spark was weak. worth checking

[lilpiton]

got my car to start.
will tell you all about it when i get home.

[ciscos13]

...

[PyR0NiAk]

Must've been pretty far from home...

[lilpiton]

lol sorrry I took so long to let you all about it.
Okay so I tried everything I could have to get it running and gave up because summer is passing by fast and I couldent look at my car sitting in the garage. So I gave it to this guy that owns a shop not far from my house.
He came up on the fact that I had a voltage drop on the positive wire on the ECU. To fix that, he didnt really look to find where the wire was bad cause he said that would be alot of work ripping apart all the harnesses, so he just run a new one from the ignition to the ECU with a 10 amp fuse.