Need Help, Won't Start

[luv2eclipse]

Did a build on my 91 talon and I'm selling it to a friend. Finished putting it together and it won't start. And I can not figure out why. I plugged in my brother's snap on modus and the spark advance is at -5. And if I turn the CAS it doesn't change at all. What else should I check as far as ignition timing?

 

[ROOKIE1]

Are you sure the cas was lined up before you installed it . They have a notch and line should be the same at tdc .

 

[luv2eclipse]

Are you sure the cas was lined up before you installed it . They have a notch and line should be the same at tdc .

yeah, and every time i've pulled it I put it back in the exact same way I pulled it out.

 

[ROOKIE1]

Just so we are on same page . This is at tdc .

 

[luvmygst]

Unless you ground the plug to set the timing the computer assumes its at 5 deg where its supposed to be. You need to ground the plug and set the timing to 5 deg then it should match what the logger shows.

What are you missing you need compression, fuel and spark. What have you checked?

 

[luv2eclipse]

I have everything. And the mechanical side of the timing is fine. It fires just at the wrong time. It's acting like if you've ever had a coolant temp sensor go out and it takes forever to start, kinda like that. And ground it out how? before i hooked the down pipe up it would shoot flames so the spark is strong enough and it has fuel, and compression was 125-130 all the way across. 0 miles on the motor just having a hard time trying to get it to fire for the first time. Thanks for all your help so far. I'll try putting the cas back in when it's at TDC tomorrow, it's gotta be on the compression stroke if i remember right when I read it in chiltons.

 

[DSM_NOOBIE]

Have you checked out this thread....

http://www.dsmtuners.com/forums/showthread.php?t=217951

 

[luv2eclipse]

Have you checked out this thread....

http://www.dsmtuners.com/forums/showthread.php?t=217951

No, but thank you

 

[luv2eclipse]

Still nothing. Injectors are firing, sprak plugs are firing, still has compression. How do you ground out the plug for timing. I couldn't find that in the book.

 

[luv2eclipse]

Update:

I put the CAS In at TDC and it was lined up. Still got nothing out of it. I grounded the plug and still after looking at the scanning tool I still have -5 degrees of spark advance. No matter what I tried with turning the CAS this did not change one bit. I am completely lost. It still won't start but acts like it wants to. I tried heating up the coolant temp sensor and it didn't change anything either. The sensor is brand new and tests out fine.

 

[Splitpi]

Odd ball question, but are you sure the cas is good?

I tried to look up in the shop manual how to test but had no luck finding it.

 

[luv2eclipse]

I wasn't sure which is why I bought a different one off of a running vehicle.

 

[oldman]

1. Check your firing order, left to right, 4321 on the head and 4123 on the coil.

2. You mentioned coolant temperature sensor in one of your posts, have you actually checked it?

3. Every time you change and try something, make sure you disable fuel, crank it a little to clear out fuel in the cylinders.

4. Have you check FPR/fuel pressure.

 

[luv2eclipse]

1. Check your firing order, left to right, 4321 on the head and 4123 on the coil.

2. You mentioned coolant temperature sensor in one of your posts, have you actually checked it?

3. Every time you change and try something, make sure you disable fuel, crank it a little to clear out fuel in the cylinders.

4. Have you check FPR/fuel pressure.

1.Firing order is right

2. I thought that was the problem so I bought a new one. And tested the voltage on the connector and it's fine.

3. I have cleared the cylinders and cleaned or put new plugs in after a while also.

4. I have an aeromotive FPR set at 37-38 psi.

Also when #1 is at TDC my timing on the cams are still lined up perfectly. The ecu is good, no smell or anything else. I'm trying to think of what else to help narrow it down. My injectors are firing. I am just so completely lost with this whole thing now. And it has to be running by this weekend but I am out of ideas. When we hooked up the modus scanner everything looked good except the advance was -5 degrees, and it should be at 5 right. So that tells me it's firing late and even if i turn the CAS either way it doesn't change. Anyone know why that is and does anyone have an idea of how I can Advance the timing?

 

[luv2eclipse]

I will be selling the car this weekend regardless. If in running condition I will get more for it. I will honestly paypal the first person to figure it out $100

 

[tbird]

ecu man.... check it out

 

[luv2eclipse]

I wish I had another ECU to try it. It gave out readings with the scanning tool but maybe that could be why the advance won't change though. Then again I know nothing about ecu's.

 

[oldman]

Check your IPS, Idle Position Sensor, located on the butterfly stop with one wire coming out of it.