Finally, Build time!

[bullettdsm]

Since we're talking strange, any chance you had a radical knife edge job done on it? Screwed with the notches somehow? (I still suspect a broken/disconnected wire though)

MB

 

[420a16g]

no i specified to the machine shop i just wanted the crank balanced and no knife edging at all.

 

[Shadow98]

So, have they checked the sensor plugs?

 

[Shadow98]

Heres some pics which might help you out. The one with the grey rubber goes to the coil and the one with the blue rubber goes into the trans.

Edit, ignore the second pic. I posted the wrong one.

 

[Shadow98]

Opps, here the one that goes into the trans. It still has the blue rubber...

 

[420a16g]

Ok we are all convinced its a electrical problem now. so ill give you another scenario. the engine is getting power, the starter comes on, the crank signal is getting a signal but is not sending anything back. check all other sensors and they are in the right place according to the shop. so maybe its one of these things: MSD DIS 2 ignitino box, MSD tach adaptor, MSD coil pack wire harness, fuel cut defender. could any of these be interfering with the crank??

also, they took the msd box off and went back to stock and it still wouldnt start, so we are all lost on what to do next.

 

[BigRand]

still have the stock coil pack

 

[420a16g]

stock coil pack is what is installed. do you any of you think maybe it could be a lose wire in the psm socket? would keep a signal from traveling back to the computer? could the portfueler have anything to do with this?

 

[Slo2gen]

Ok we are all convinced its a electrical problem now. so ill give you another scenario. the engine is getting power, the starter comes on, the crank signal is getting a signal but is not sending anything back. check all other sensors and they are in the right place according to the shop. so maybe its one of these things: MSD DIS 2 ignitino box, MSD tach adaptor, MSD coil pack wire harness, fuel cut defender. could any of these be interfering with the crank??

also, they took the msd box off and went back to stock and it still wouldnt start, so we are all lost on what to do next.

What do you mean you get signal in but nothing coming back, isn't our ckps a 3 wire, one ground, one signal, and one 5v ref?

 

[420a16g]

honestly dude i dunno. im just going off what the shop is telling me. i guess the computer is suppose to send a signal to the crank sensor and then the sensor sends one back to the computer, which causes the injectors to fire in turn, turning the crank....i guess? is that not right?

 

[Locke]

The communication between crank sensor and ECU is one way, from the sensor to the ECU.

 

[Slo2gen]

That means that if you are getting 5 volts to the sensor and you have a ground to the sensor but nothing at the blue/white wire(signal) then your sensor is not reading the crank. Try back probing the sensor when cranking it and see if you get any voltage...you should be. Check them all, see if you get 5 volt ref to one wire, and ground at the other too.

 

[bullettdsm]

I know this was mentioned before, but if the timing is off enough you will get no crank signal. I'm wondering if they have the gears on properly. The face of each cam gear should have 2.0 on it (not 2.4). Also, is it possible that they have the exhaust cam 180 off?

Slo2gen already gave you a little to work with on the connector. You are sure that there is nothing blocking/broken on the signal wire on the connector? Believe it or not we are as frustrated as you are (Ok, maybe not, but close )

MB

 

[420a16g]

the timing has already been checked and it is in time, a compression test was done and it registered 120 across the board. also the connectors have been re-checked and are in correctly. when i talked to them today they were checking the wires from the computer harness to make sure none were cut or broken. everyone is stumped on why it wont start. and i need to make a correction from earlier. the car will crank but there is no signal going to the coil so the injectors wont fire. even when the MSD stuff was unplugged and the electrical was back to stcok. ill have them take a look at your suggestions and see what they say.

 

[Slo2gen]

Dude...120 is LOW. I have a low comp. set up and its 180is across the board. You need to do a leak down test or a wet comp test. Just a thought beond that though. Make sure there are NO vaccume leaks. The first time I did a hg on mine I left a vaccume line off and it wouldn't start at all.

 

[Locke]

120psi *is* pretty low, but it should not cause a no start.

 

[BigRand]

+1 on compression numbers being low but should NOT cause a no start

To be honest I'd like to see you up around 170-225ish.

 

[Slo2gen]

Maybe you should take the msd off and put the stock ignition on it for now and see if that helps any. They could have something set up wrong. Never know

 

[420a16g]

correct on 120 being low, but its a low compression motor, and rings are not seated yet, so i think it will raise once i get it running. as i said before they have already taken the MSD products off once and tried to start it and still didnt work. so assume the setup is stock, any suggestions on why the motor will crank but not fire?

 

[Shadow98]

I know this may sound stupid, but I did it myself... Since you have the Portfueler, I'm assuming you don't have the EGR valve anymore. Did they by chance leave the side of the motor (EGR valve opening) or IM uncapped/ open?

 

[420a16g]

i got both EGR block off plates, and as far as i know there is nothing uncapped on the IM. do you think it could be possible that my coil pack is broke?

 

[Slo2gen]

They need to get a dvom and test light out and start testing some components. Have you pulled the spark plug and tried starting it with a tester and see if you are getting spark? If not then you need to test the crank and cam position sensor. Test the primary and secondary side of the ignition system, tell them to give you the readings they got and post them up. Good luck

 

[Shadow98]

Coil packs seem to be a common failure, so you could test it or swap it with another.

 

[420a16g]

good suggestions SLO2GEN, i advised them today to check the coil pack so i assume they will either do that today or monday. if that doesnt work ill have them check the things you suggested and post up the numbers.

 

[Slo2gen]

Any updates?