MY SS is toast...

[getarz4u15ster]

Let me preface my story by saying i put a camshaft in the car, that has been in there and running for over 6 months perfectly has been tuned and all that jazz as well.

So 2 days ago i went outside to warm my car up. I started it up was running great while idling, everything looked good on the gauges. I pushed in on the clutch and the car cut off (no bang, no boom, nothing, just shut off like you would turn the ignition key off). I tried restarting wondering why that happened and now it just spins over like there isn't anything in the motor at all not even trying to fire. After some calls and other things... I brought it up to my Chevy dealership told them what was going on with it, they took it for almost 4 hours only to come back and tell me that there is no compression on ALL 8 cylinders... Before i took it up there though i pulled one of the coils off the plug pulled the plug out and grounded the coil against the motor and started cranking it over (with all body parts very far away... there was no spark AT ALL from the coils.... HOWEVER dealership says the car has fire, and the injectors are working as well (because the cylinders are filled with gas... rings are probably washed out now from cranking it over without unplugging the injectors which (washed out rings will also give you a low compression reading). I haven't done my own compression test, but I'm planning that tonight as well as pulling the valve covers off and spinning the crank to see if all the rockers are moving to eliminate any timing chain jump or break... I guess one if i rule out it's mechanical i can move on to electrical... weird thing is... it's not throwing and codes at all.. I would think if it' a crank position sensor or cam sensor it would throw something and tell me it's not got current or something... THIS SUCKS!!!! I was not looking forward to ripping the motor down AGAIN... wouldn't I get some sort of pop or something out of the tail pipe if i were getting spark and fuel in the piston chamber??? I mean even if the valves were open it would make some sort of bang ...

[2010 SS RS]

Originally Posted by getarz4u15ster

Let me preface my story by saying i put a camshaft in the car, that has been in there and running for over 6 months perfectly has been tuned and all that jazz as well.

So 2 days ago i went outside to warm my car up. I started it up was running great while idling, everything looked good on the gauges. I pushed in on the clutch and the car cut off (no bang, no boom, nothing, just shut off like you would turn the ignition key off). I tried restarting wondering why that happened and now it just spins over like there isn't anything in the motor at all not even trying to fire. After some calls and other things... I brought it up to my Chevy dealership told them what was going on with it, they took it for almost 4 hours only to come back and tell me that there is no compression on ALL 8 cylinders... Before i took it up there though i pulled one of the coils off the plug pulled the plug out and grounded the coil against the motor and started cranking it over (with all body parts very far away... there was no spark AT ALL from the coils.... HOWEVER dealership says the car has fire, and the injectors are working as well (because the cylinders are filled with gas... rings are probably washed out now from cranking it over without unplugging the injectors which (washed out rings will also give you a low compression reading). I haven't done my own compression test, but I'm planning that tonight as well as pulling the valve covers off and spinning the crank to see if all the rockers are moving to eliminate any timing chain jump or break... I guess one if i rule out it's mechanical i can move on to electrical... weird thing is... it's not throwing and codes at all.. I would think if it' a crank position sensor or cam sensor it would throw something and tell me it's not got current or something... THIS SUCKS!!!! I was not looking forward to ripping the motor down AGAIN... wouldn't I get some sort of pop or something out of the tail pipe if i were getting spark and fuel in the piston chamber??? I mean even if the valves were open it would make some sort of bang ...

Dang, no compression in all 8...that has to be something with the timing chain I would think....Did you install the HD timing chain and Tensioner when you did your Cam? The stock tensioner sux and has been known to break causing extreme timing chain slack and perhaps thru it or broke the chain. I assume the condition of the plugs was not giving any signs? Dealer did not scope a piston or any other test? Good luck and I feel for you. I lost compression in my number 4 cylinder but it was due to a ring gone bad. Ended up building the whole motor while it was out for the fix.

[n116ebo]

I know I am fixing to say something stupid, but just the other day a guy said he started his Camaro and when he put it in gear it died. He said it would spin but not start, he finally noticed on the dash display a message his car had been disabled. If I remember correctly he called onstar and they had disabled his car thinking a theft of the vehicle might have taken place. I told you I was probably going to say something stupid. Wishing you luck and a quick fix.
n116ebo

[getarz4u15ster]

Originally Posted by 2010 SS RS

Dang, no compression in all 8...that has to be something with the timing chain I would think....Did you install the HD timing chain and Tensioner when you did your Cam? The stock tensioner sux and has been known to break causing extreme timing chain slack and perhaps thru it or broke the chain. I assume the condition of the plugs was not giving any signs? Dealer did not scope a piston or any other test? Good luck and I feel for you. I lost compression in my number 4 cylinder but it was due to a ring gone bad. Ended up building the whole motor while it was out for the fix.

I didn't install the new Tensioner... where can i pick that up as well as the chain?

[tjbusa]

Thats a sad story, hope its just a chain and tensioner

[getarz4u15ster]

Well, I'm not exactly sure the tech actually did a compression test... i think he just hooked it up to the computer and cranked it over and said ahhh it has no compression... I don't really believe he's done anything in that regard...at least THAT WHAT I"M HOPING... and i really hoping it does have compression so i can got he route of electrical and ignition... who knows at this point..

[Slowhawk]

IF there is no compression the timing chain broke or the cam gear bolt fell out.I find it hard to beleive no cylinder have compression though.

[f5journal]

I'm with slowhawk. Some part of this story is erroneous....
There's gotta be compression on some of those cylinders

......and, you towed it to the dealership and then back home???????

[SSRSLY]

Wouldn't it be easier to check electrical first?

[getarz4u15ster]

Originally Posted by SSRSLY

Wouldn't it be easier to check electrical first?

Yes it is... that's why I took it up to the dealership to have them look at that part of it.. and they said the motor is getting fuel and fire... Fuel i believe.. Fire i do not. I literally took the spark plug out and plugged it back into the coil and grounded the coil to the motor and there was no spark when i was cranking it over... that's why i want to to take the valve covers off and make sure the all the rockers are moving which would tell me the timing chain is on and the valve train assembly isn't the issue... We will see this evening i guess... I'll update with info.

[2SSCAMARO]

Originally Posted by getarz4u15ster

Let me preface my story by saying i put a camshaft in the car, that has been in there and running for over 6 months perfectly has been tuned and all that jazz as well.

So 2 days ago i went outside to warm my car up. I started it up was running great while idling, everything looked good on the gauges. I pushed in on the clutch and the car cut off (no bang, no boom, nothing, just shut off like you would turn the ignition key off). I tried restarting wondering why that happened and now it just spins over like there isn't anything in the motor at all not even trying to fire. After some calls and other things... I brought it up to my Chevy dealership told them what was going on with it, they took it for almost 4 hours only to come back and tell me that there is no compression on ALL 8 cylinders... Before i took it up there though i pulled one of the coils off the plug pulled the plug out and grounded the coil against the motor and started cranking it over (with all body parts very far away... there was no spark AT ALL from the coils.... HOWEVER dealership says the car has fire, and the injectors are working as well (because the cylinders are filled with gas... rings are probably washed out now from cranking it over without unplugging the injectors which (washed out rings will also give you a low compression reading). I haven't done my own compression test, but I'm planning that tonight as well as pulling the valve covers off and spinning the crank to see if all the rockers are moving to eliminate any timing chain jump or break... I guess one if i rule out it's mechanical i can move on to electrical... weird thing is... it's not throwing and codes at all.. I would think if it' a crank position sensor or cam sensor it would throw something and tell me it's not got current or something... THIS SUCKS!!!! I was not looking forward to ripping the motor down AGAIN... wouldn't I get some sort of pop or something out of the tail pipe if i were getting spark and fuel in the piston chamber??? I mean even if the valves were open it would make some sort of bang ...

I don't know how it would be possible to hold all the valves open on all cylinders during every compression stroke.

[getarz4u15ster]

Originally Posted by 2SSCAMARO

I don't know how it would be possible to hold all the valves open on all cylinders during every compression stroke.

Not possible... But I hope it's not the Chain Or.. Cam Gear.. It's a good thing i was just sitting there letting it idle and it cut off... that's the weird part.. it's just so random that it happened that way.

[getarz4u15ster]

Originally Posted by Slowhawk

IF there is no compression the timing chain broke or the cam gear bolt fell out.I find it hard to beleive no cylinder have compression though.

That's what i said one of the cylinders have to be completely closed that could give you compression.

[danhr]

did you stay with a single bolt cam when you did the cam swap?

if so, did you torque the cam bolt down properly and use a new bolt? (the stock one is a torque to yield, so it can not be re-used).

I am thinking maybe the bolt came loose.....