engine cranks but doesn't start
 

So problem #2 of the day haha, cant figure this out, engine cranks fine, and sounds strong, but it does not start

I understand this has to do with either spark or fuel.

I recently pulled the motor, and changed the timing belt and all that jazz.

First I removed the valve cover and checked the timing belt

gonna borrow revlimiters pic

looks just like this:

https://www.miataturbo.net/attachmen...ine=1332030150

So I'm guessing thats correct.

-Next I pulled the fuel line, and fuel leaked out, so I'm getting fuel.

Next pulled the spark plugs, and they seemed fine.

-Went to autozone and exchanged my ngk wires with new sparkplug wires, and changed that, also bought new ngk plugs.

-Changed to new plugs and wires and that seems fine.

-The ground strap broke while I pulled the motor, and I replaced with with 4 gauge wire, check that to make sure that's good, and it was.

Then I tried to crank up the motor again, still the same thing.

-check all the fueses, all of them were fine

It cranks fine, but never starts. Sounds completely normally, and doesn't do anything weird other than not starting.

I'm pretty sure its got to be somethings stupid, but I can't seem to figure it out.

Also used the adaptronic ems to take a log of the start process (attaching it to this).

Any ideas?

Coils hooked up backwards? If you switch the leads, it won't start. Try changing them.

Checked it. It's proper.

I want actual pics of your crank at TDC and cam gears lined up correctly.

The presence of fuel in the fuel line doesn't mean the fuel pump is working. Can you hear it? Try jumpering it. Do you have a timing light? If so, hook it up and see if the coils are firing. In other words, the first step is to confirm the presence of fuel and spark. Once you have that, figure out why you don't have the correct fuel and spark.

Does this look correct:

https://www.miataturbo.net/attachmen...ine=1332039420

https://www.miataturbo.net/attachmen...ine=1332039420

No, but I think I can rent one to check at most stores.

Your exhaust cam looks 2 teeth off. I only count 17 little bumps between the "I" and "E" lines. It should be 19 bumps. I would check that again and fix it if it is off.

Ok, thanks. I was counting the wrong thing :riaa: , hope it's that simple!

The lobe on the exhaust cam looks a little high in the bird's eye view so I think you're onto something. I've never counted teeth - I line up the marks on the cover behind the gears after finding TDC on the crank.

Pop out your main fuel injection relay and jump it.

So I took the valvecover off, and managed to reallign the cam without ------- with anything else:

https://www.miataturbo.net/attachmen...ine=1332104708

but it still doesn't start.

Just gonna start taking everything apart again, to see what I'm missing. Hopefully it'll be something obvious.

I'm really sure its not the fuel. I tired the starter fluid method, that didn't do squat.

That picture looks correct.

You can try jumping the fuel pump in the diagnostic box. You jump F/P to ground and it will stay running.

The fuel pump turns on, but the car still does the same thing :(

Attachment 185999

took everything apart and the the crank was off by a bit.

Can you guys check this real quick to make sure its right so i don't ---- it up again and can close it up haha:

Attachment 185996

Attachment 185997

Attachment 185998

Looks good. How far off was the crank?

Awesome, hopefully it starts this time.

About 1-2 teeth.

Thanks for all the help!

If your injectors aren't firing and you have no spark I would suspect a crank angle or cam position sensor signal not getting to the ecu.

As Mr Hyde above posted, you need to establish that you do for fact have fuel and spark. First I would check for spark at the plugs. Will need to ground the plug to the head and have someone turn it over. It would be advisable to have the fuel pump OFF in this test.

I checked the wiring in both the sensors they both seem fine, how would u know if they are bad?

This is so frustrating, damn thing still doesn't start, I know for sure the cam timing is correct now tho.

Here is a link to what it sounds like if it helps

http://i223.photobucket.com/albums/d...4/cb84eef6.mp4

It's not firing any mixture.
So, you've got to establish spark first. If it exists, then you've got no fuel.
If needed, we'll diag fuel as soon as we establish spark.
Both are dependent on the ecu 'knowing' where the engine is at in its cycle.

A quick check for fuel is to crank for a fair bit, then pull a plug and see if it's wet. Or reeks of gas.

Thanks.

I did the spark test:

no spark:

video:

http://s223.photobucket.com/albums/d...t=60d6ebef.mp4

Pulled the plugs, they are not wet.

Does this mean its the sensor?