Rebuilt motor. No start again

[apedog]

So I found that I had bent valves and I thought that was the reason why I had no compression so I went and bought brand new valves and installed them.
Put the head back on today and still no start.
I did a compression test and I got 0 90 0 0.
Have spark and fuel.

Now in order for an engine to have compression it needs to be in time right?
I lined up the head marks as close I could, almost straight across. And it was at tdc. Could the CAS have something to do with it??
Im just baffled,annoyed,broke



http://www.youtube.com/watch?v=UmoDRxo0zig

 

[3kgt2nv]

Did you check the crank timing?

 

[apedog]

Did you check the crank timing?

I thought you cant check that if the car isnt running? The timing marks behind the crank pulley are all correct
Although that plate behind the crank pulley, if I were to have put that on backwards that would make it not start because it would say its in time when it actually isnt. BUT when I had the head off the number 1 and 4 piston were up the whole way

 

[tron2119]

That plate shouldnt have anything to do with the timing mark. Its on the crank pulley. Did you spin the engine 360 degrees a couple of times just to make sure everything still lined up?

 

[thetalonator]

did u bleed the lash adjusters after u installed the valves??

if the lash adjusters were primed they wont allow the valves to close all the way. and i hope you turned the motor over by hand before you tried starting it or you might be replacing those valves again.

 

[GSXrestomod]

Did you have the valve seats cut? Make sure to lap the new valves?

 

[apedog]

did u bleed the lash adjusters after u installed the valves??

if the lash adjusters were primed they wont allow the valves to close all the way. and i hope you turned the motor over by hand before you tried starting it or you might be replacing those valves again.

I turned it over by hand 6 full times before I even started it and everything stayed lined up. I took the head to the machine shop to get the valve seats messed with so the new valves would sit right. I had the lifters out but I did not clean them soo they probably still have oil in them so I guess Ill get them out

 

[g4ebguy90]

even with bent valves I would assume you would have, some compression. like 30-40 psi. I'm betting that it was not in the correct time, such as exhaust instead of compression.

 

[apedog]

cleaned out the lifters today and still nothing. Although it does seem like it wants to start more. idk what to do

 

[miguelmcv]

Check your temperature sensor....
If that is disconnected or malfunctioning then, It will never start.
Dabble check your compression, There is something wrong. (Maybe you are not doing it wright.
At least it should be 20, 30, 10, BUT, not 0.

 

[apedog]

Check your temperature sensor....
If that is disconnected or malfunctioning then, It will never start.
Dabble check your compression, There is something wrong. (Maybe you are not doing it wright.
At least it should be 20, 30, 10, BUT, not 0.

Temperature sensor didnt look so good but would that really cause the car to not start at all?
Did a compression test and got 0 120 0 0.

What if I accidently switched the exhaust and intake cam? Are they the exact same, like the are lobes in the same place?

 

[corbintomm327]

yes the temperature sensor can cause the car not to start at all but the cam question im not so sure about.

 

[apedog]

yes the temperature sensor can cause the car not to start at all but the cam question im not so sure about.

It smells like its just dumping fuel too, I took the plugs out and there covered in gas. Maybe the temperature sensor is bad and the car thinks its in cold weather and the spark plugs cant burn all the fuel being dumped in?

 

[rlacasse1]

Do you have your MAF plugged in and all of your intercooler piping in place and clamped down and all vacuum lines connected or blocked as necessary?

 

[dacowgod]

Do a compression test after you bled the lifters.. I'm curious if maybe the lifters were pumped up propping the valves open during your first attempts at starting and then fouled your spark plugs... Now that you've bled your lifters and put them back in..You SHOULD have compression (unless your valves are bent again) ... So if thats the case a new set of plugs should be all it takes to get running...

A temp sensor has NOTHING to do with having no compression...your problem here is NO compression.

Also you technically CAN put your cams in the wrong (i.e. intake cam in the exhaust spot, and vice versa) but your Intake Cam is the only 1 of the 2 that is provisioned for your CAS... so if your CAS will bolt on your cams are in correctly..

ALSO, FWIW.. Bent or open valves can and will leave you with 0 compression if they are open enough..... I've seen it happen plenty of times...

 

[brokedowntalon7]

Temperature sensor didnt look so good but would that really cause the car to not start at all?
Did a compression test and got 0 120 0 0.

What if I accidently switched the exhaust and intake cam? Are they the exact same, like the are lobes in the same place?

Assuming your cam angle sensor (CAS) is installed then your cams should be in their appropriate locations. However did you align the punch marks properly on the CAS?

Also regarding the lifters, did you bleed them? are you able to compress them with your fingers? you should be able to. Just want to make sure you don't ruin you new valves.

 

[thetalonator]

Do a leak down test to see where your compression is going. if you bleed your lifters properly your valves should seat unless you had your head milled and didn't make up the differance on the valves ,but even at that i would think you would have some compression. keep us updated.

 

[apedog]

Yes I bled my lifters out the other day and I can squeeze them down with my fingers the whole way. Now I didnt realize I had to bleed them out the other day and I tried starting it before I bled out the lifters with the new valves in but idk if there bent again. I just redid timing today just to make sure it was right on the money and still nothing. The CAS is working because I can hear the injectors clicking.
When I pull the sparks plugs out there covered in gas too, thats what makes me think maybe the temperature sensor is just dumping fuel in like wayy to much so its probably not helping the situation either

The head was milled down to where it cant be milled down anymore. Could that be a problem?
Ill probably put a video of it trying to start tomorrow so you guys can see

 

[frankenstein406]

You checked for spark right? You can check with a skrewdriver the position of the piston to.

 

[apedog]

You checked for spark right? You can check with a skrewdriver the position of the piston to.

Yep I have spark on all 4 wires and I did that too.

Do a compression test after you bled the lifters.. I'm curious if maybe the lifters were pumped up propping the valves open during your first attempts at starting and then fouled your spark plugs... Now that you've bled your lifters and put them back in..You SHOULD have compression (unless your valves are bent again) ... So if thats the case a new set of plugs should be all it takes to get running...

A temp sensor has NOTHING to do with having no compression...your problem here is NO compression.

Also you technically CAN put your cams in the wrong (i.e. intake cam in the exhaust spot, and vice versa) but your Intake Cam is the only 1 of the 2 that is provisioned for your CAS... so if your CAS will bolt on your cams are in correctly..

ALSO, FWIW.. Bent or open valves can and will leave you with 0 compression if they are open enough..... I've seen it happen plenty of times...

Here is a video of it trying to start
YouTube - ‪1g Eagle Talon TSi AWD NO START‬‏

The only other thing that would cause no compression would be piston rings but there brand new too and I staggered them like your supposed too.

 

[apedog]

Took the head off again and found 4 bent intake valves Note to self: BLEED YOUR F**CKING LIFTERS INSTALLING NEW VALVES OR ELSE

 

[brane_97talon]

wow seems like i have the same exact issue. changed headgasket, didnt bleed lifters, timing on point, changed coolant temp sensor and now low compression and no start condition. Looks like I will be busy this independence day

 

[SniperMatt59]

Took the head off again and found 4 bent intake valves Note to self: BLEED YOUR F**CKING LIFTERS INSTALLING NEW VALVES OR ELSE

sorry to hear that man, hope everything goes good when you get the new ones in

 

[thetalonator]

yes sir if your valves are not closed without the cams installed then you will bend valves. sory to hear the bad news tho. the lessons we learn the hard way only prevent us from doing them again. good luck.

do yourself a favor before you install your head after the valves are replaced with the cams out pour water in the portsn make sure the valves don't leak. this will save you alot of time and money.