C5 No start condition
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From: Columbus Ohio
I can see the tps signal through the torque app on my phone and its reading fine. Im wondering if the manifold isnt seated properly. I torqueD everything down to spec but it occurs to me upon cranking, I hear what I thought was a squeel but now I am thinking it may be a vaccuum leak.
Last edited by gibsonj4; Jul 24, 2017 at 04:35 PM.
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You have to go around several times with a torque wrench. When you tighten one the previous one gets looser as it seats down more and more.
I had to go around about 5 times with the same torque spec.
I had to go around about 5 times with the same torque spec.
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That doesn't look like enough carbon to keep it from firing. Even if there was a problem with those cylinders, the remaining cylinders should run unless there is a broken valve. There was no problem with valves before you replaced the intake though.
You could check the compression on the cylinder with the dirtiest plugs if you want reassurance.
You could check the compression on the cylinder with the dirtiest plugs if you want reassurance.
Last edited by Rob 02; Jul 24, 2017 at 10:35 PM.
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Quick update. Tonight I decided to try to take the intake tube off and look at the tb when it was starting since I have heard some popping on startup. It is backfiring in the intake it looks like. I would guess this is timing or lean condition. So cam sensor or injectors arent all firing?
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Replaced the sensor and no change. Still backfiring through the intake. However, a couple of the cylinder head ports are wet and it almost seems like water/condensation mixed with fuel. This is startimg to make wonder about the gas in the car now.
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Well, finally threw a cam sensor code. Replaced the cam sensor and it fired up. However, the car wont idle for more than a couple seconds without some throttle then it dies ans backfires out the exhaust. There is also a whine from the front of the engine which I think is just a bearing om one of the pulleys.
update: header on passenger side is hot but drivers side is completely cold so it seems none of the cylinders are firing
update: header on passenger side is hot but drivers side is completely cold so it seems none of the cylinders are firing
Last edited by gibsonj4; Jul 28, 2017 at 01:03 PM.
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Well, finally threw a cam sensor code. Replaced the cam sensor and it fired up. However, the car wont idle for more than a couple seconds without some throttle then it dies ans backfires out the exhaust. There is also a whine from the front of the engine which I think is just a bearing om one of the pulleys.
update: header on passenger side is hot but drivers side is completely cold so it seems none of the cylinders are firing
update: header on passenger side is hot but drivers side is completely cold so it seems none of the cylinders are firing
trying to keep this going here i just did an engine freshen and everything is back in order but i crank and no start, no codes, spark is good fp is 50lbs it just cranks and cranks no start. compression ok, injector pulses on my test light , voltage a bit low like 11.68 but after charging to 12.8 its still no stgart. i too get a small single liitle backfire once in a while from a single cylinder. its not even a backfire its like a small pop. valves are lashed proper i was thinking 1 tooth off on timing chain but it would still at least try to start and run it wont even do that. Should i get a small oil pressurre reading when cranking ? it stays at zero. my block was washed with the cam sesnor in it after the hone job i suspect but no codes how do i check this
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Joined: Oct 2014
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trying to keep this going here i just did an engine freshen and everything is back in order but i crank and no start, no codes, spark is good fp is 50lbs it just cranks and cranks no start. compression ok, injector pulses on my test light , voltage a bit low like 11.68 but after charging to 12.8 its still no stgart. i too get a small single liitle backfire once in a while from a single cylinder. its not even a backfire its like a small pop. valves are lashed proper i was thinking 1 tooth off on timing chain but it would still at least try to start and run it wont even do that. Should i get a small oil pressurre reading when cranking ? it stays at zero. my block was washed with the cam sesnor in it after the hone job i suspect but no codes how do i check this
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your the man i went out and re oriented the coils from a pic off google, i had them in reversed as i couldnt remember the way they went in from dissassembly back in october. she fired right up and purrs like a kitten cant wait to break in the new skirt coatings and rings and see if she holds 15lbs without to much blowby. ps the new mantic clutch grabs like jack the bear.
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GIBSON
your the man i went out and re oriented the coils from a pic off google, i had them in reversed as i couldnt remember the way they went in from dissassembly back in october. she fired right up and purrs like a kitten cant wait to break in the new skirt coatings and rings and see if she holds 15lbs without to much blowby. ps the new mantic clutch grabs like jack the bear.
your the man i went out and re oriented the coils from a pic off google, i had them in reversed as i couldnt remember the way they went in from dissassembly back in october. she fired right up and purrs like a kitten cant wait to break in the new skirt coatings and rings and see if she holds 15lbs without to much blowby. ps the new mantic clutch grabs like jack the bear.