Car will not start after engine pull

[corneliusmixon]

I replaced my driver side turbo a week ago but have not been able to get it running again. The locking nut came off the compressor wheel. I ended up with about a quart of oil sitting in my driver side intercooler\piping. Car ran fine before I pulled the engine. I'm lost. This is my 4th pull and never had a problem before. I have tried the following:
Compression test
Replaced the Crank Position Sensor
Replaced wire harness with a brand new one (old one was shit)
Checked spark
Checked fuel

If it matters, I also replaced the clutch while i had it out.

[ryanhmusic]

I replaced my driver side turbo a week ago but have not been able to get it running again. The locking nut came off the compressor wheel. I ended up with about a quart of oil sitting in my driver side intercooler\piping. Car ran fine before I pulled the engine. I'm lost. This is my 4th pull and never had a problem before. I have tried the following:
Compression test
Replaced the Crank Position Sensor
Replaced wire harness with a brand new one (old one was shit)
Checked spark
Checked fuel

If it matters, I also replaced the clutch while i had it out.

clutch switch?

[corneliusmixon]

clutch switch?

It turns over but will not start.

[vavJETTAw36]

Can you tell us a little bit more about how it behaves? At this point we can guess one of a billion reasons why it's not starting. Is it at least turning over?


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[erykv1]

ground strap on the passenger side secure?

[corneliusmixon]

ground strap on the passenger side secure?

If you mean the engine ground next to the alternator then yes that's good.

[corneliusmixon]

Are there any tests I can run with VAGCOM?

[DieselElectric]

4 things for a running engine.

Compression
Air
Fuel
Spark

Got compression, got air, got spark. If you are getting these 3 things, then you aren't getting fuel, or the engine would start.

Check for fuel. You say you did, but did you check for injector pulse?

I say this alot, but get a set of cheap noid lights from harbor freight. They give you an end of the line check for fuel. I imagine your injectors aren't firing.

Ground cluster on the driver's side firewall? Just an edumucated guess.

[auditrackspeed]

coolant temp sensor ?

[zillarob]

Imma throw icm connectors into the hat
Black to black, brown to brown.

[Mille Bornes]

lol crank sensor wiring!

Idk on my car I noticed as I was about to drop the motor back in, by pure chance, that pulling the engine and whatnot caused some split/corroded wires like a quarter inch from the crank sensor connector to break

[landfill]

Check all of your grounds!

[Royal769sr]

Grounds .. crank sensor.. cam sensors...fuel.....

[corneliusmixon]

Not sure what I did wrong last time but the compression test I just did shows a problem. Also, I dropped the compression ratio by .5 when I did my build a year ago.

Cylinder 1: 75 psi
Cylinder 2: 130 psi
Cylinder 3: 140 psi
Cylinder 4: 130 psi
Cylinder 5: 120 psi
Cylinder 6: 140 psi

Would cylinder 1 keep the car from running?

[zillarob]

No, it should run.

[rguil]

Double check your spark if you have fuel. My ecu randomly fried once after swaping coil packs to chase a misfire so it could be that. I would check your crank sensor first, if you measure with a ohm meter it should read within 750-1000 ohms. you can also test in vag com.

[corneliusmixon]

Double check your spark if you have fuel. My ecu randomly fried once after swaping coil packs to chase a misfire so it could be that. I would check your crank sensor first, if you measure with a ohm meter it should read within 750-1000 ohms. you can also test in vag com.

I replaced the crank sensor. How do you check the crank and cam sensors with vagcom? Is there a measuring block for them?

[Nollywood]

Incorrect crank sensor air gap, faulty flywheel / tone ring.

[corneliusmixon]

When attempting to start the car, should I see the RPMs move on the tach? I'm trying to see if the crank sensor is being read by the ECU.

Could someone please pull their fuel pump fuse then try to start? Does the tach move when attempting to start?

Is there a way to test if the crank sensor is functioning correctly?

[vavJETTAw36]

There should be a measuring block for those. May have to just go through them all until you find it. There should a whole list if you are logging that you can check uncheck


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[corneliusmixon]

I think I found the problem. Not sure how this happen because I did not touch the timing belt. Also, I'm getting the following codes:
16730 - Camshaft Position Sensor (G163)
P0346 - 35-00 - Implausible Signal
16725 - Camshaft Position Sensor (G40)
P0341 - 35-00 - Implausible Signal

[rguil]

Group 001 should show rpm when you are cranking.
A faulty cam sensor will still let you start so i wouldnt worry about that.
In relation to your timing pic i wouldnt worry about it but you can check your cam offset in relation to tdc in measurement block 93. It should be within +-4 of eachother. I was at -16 and +4 once and it ran fine.
Are you sure you are getting spark and fuel? How exactly did you check both?

[rguil]

Also theres only a few things that would prevent spark. A ground fault, either at the motor mount to the frame or even the grounds on the wiring harness that attach to the head. Also check your grounds that attach to the secondary firewall.
Both your icms could fry at once. You can bench test them using a simple volt meter to figure out if they are shot.
Your cps could be shot but you have already replaced that.
your ecu could fry while still allowing you to scan and connect to it.

Things to check for in fueling
fuel pressure at the rail, unhook the line coming from the pump and crank, it should spray everywhere.
if nothing sprays out it could be your pump or pump relay
Check your injector pulse in vag com or you could un do your rail and crank to see if fuel comes out.

unless a rat crawled into your y pipe, you wont have a problem with air. your compression is decent

In this case i think its your ecu, let me know what else you find

[jolio1994]

Might sound dumb, but I was cranking my car for about an hour before I realized the fuel lines were backwards...

[DieselElectric]

In this case i think its your ecu, let me know what else you find

In my 10 years of as an Auto technician, I only saw an ECm failure twice. Granted, this was dealing In factory, unmodified systems, but still. ECM is an absolute last resort after eliminating all factors, including wiring.

[rguil]

Might sound dumb, but I was cranking my car for about an hour before I realized the fuel lines were backwards...

so its fixed?

[julex]

I think I found the problem. Not sure how this happen because I did not touch the timing belt. Also, I'm getting the following codes:
16730 - Camshaft Position Sensor (G163)
P0346 - 35-00 - Implausible Signal
16725 - Camshaft Position Sensor (G40)
P0341 - 35-00 - Implausible Signal

That's not enough to cause timing errors.

Camshaft sensors are correlated to crankshaft sensor which is considered an "absolute truth" readout as far as ECU in concerned. If Crank sensor gives wrong readouts, perfectly aligned camshafts will give you the errors above.

I would look hard at your flywheel since you were doing clutch job. You most likely installed FW in wrong position and now crank signal is clocked wrong.

[corneliusmixon]

I finally found the issue. I forgot to install the spacer for the Crank Position Sensor. So the sensor damaged the tone ring on the flywheel. I replace the flywheel and it started right up. Trying to rush to put the car back together to make it to the track cost me 2 months of down time and $500.

[MarlinFoundNemo]

I finally found the issue. I forgot to install the spacer for the Crank Position Sensor. So the sensor damaged the tone ring on the flywheel. I replace the flywheel and it started right up. Trying to rush to put the car back together to make it to the track cost me 2 months of down time and $500.

wow, that sucks.