turbo39151
anycoloraslongasitsblack
- Joined
- Nov 7, 2002
After spending the past few weeks reading everything I could on "no start" conditions. And attempting most everything I can think of, I figured I'd post up here and see if anyone has any ideas...
I'll start with the back ground info and then all of the things I have tried.
First, this is a very strong running 86. 95% original, Always starts on first try. I rarely drive the car and start it up every few weeks and let her idle till warm and then put her back in the garage... The other day I went to move her out and got a "no start"
Engine turns over and attempts to start so starter is good.
I checked Battery (it's good); FP gauge says 40lbs at rail; fuel pump kicks on every time; fuel tank is full. All fuses were good.
On the first few tries of the first 10 tries I did get a back fire but since then, nothing- just crank and almost start every time...
I pulled the plugs and they were fouled from all the attempts so I replaced them with the a new set of ac delco 43s' .032 tight gap; No Start.
Swapped on a new plug wire and car started- I tuned it off thinking I had found the issue...
Figured it was bad wires so swapped on "known working" ones from another tr. NO Start... While testing the wires for spark with plug not installed (ie: only 5 plugs connected and installed) the car started and chugged a little with the residual fuel in the cylinders... I buttoned it up and tried again and no start.
Swapped on another "known working" ignition module and coil pack, NO Start. (in conjunction with the "known working" wires)
Sprayed some fuel down the throttle body to see if maybe my fuel was causing the issue; No Start.
Upon a suggestion that it was a timing issue, I pulled the cam sensor (which was fine in appearance) and put a new one- I checked and rechecked to make sure everything was lined up and dialed in properly; No start. Car has new double roller t-chain since last year and maybe has 100 miles on it since then... I have ruled that out.
Disconnected the MAF; still No start.
I replaced the crank sensor as it had a slight nick in it but still no start.
I swapped a "Known working" ECM with proper chip for injectors, no start
Considered the fusible links but the ECM is kicking on the fuel injectors and fuel pump and the starter is turning the engine over so not sure if I'm missing something there...
Went through my GM service manuals... nothing.
Used the Vortex "No Start" tree... I have good voltage at the ignition module plug but nothing is registering at the cam or crank sensors... (Not sure if I'm just not doing it right or not) Think I may have a short somewhere but not even sure where to begin...
Bear in mind that this car was just recently running (strong- no hesitation, nothing) and has not been driven since the last start. Just pulled out and put back in the carpeted and climate controlled garage.
Anyone have any ideas? I have had some help here from a few friends in trying to diagnose this but I cannot seem to make any progress and feel that I have addressed all the issues one would address when faced with a similar scenario.
Any suggestions are welcome!
I'll start with the back ground info and then all of the things I have tried.
First, this is a very strong running 86. 95% original, Always starts on first try. I rarely drive the car and start it up every few weeks and let her idle till warm and then put her back in the garage... The other day I went to move her out and got a "no start"
Engine turns over and attempts to start so starter is good.
I checked Battery (it's good); FP gauge says 40lbs at rail; fuel pump kicks on every time; fuel tank is full. All fuses were good.
On the first few tries of the first 10 tries I did get a back fire but since then, nothing- just crank and almost start every time...
I pulled the plugs and they were fouled from all the attempts so I replaced them with the a new set of ac delco 43s' .032 tight gap; No Start.
Swapped on a new plug wire and car started- I tuned it off thinking I had found the issue...
Figured it was bad wires so swapped on "known working" ones from another tr. NO Start... While testing the wires for spark with plug not installed (ie: only 5 plugs connected and installed) the car started and chugged a little with the residual fuel in the cylinders... I buttoned it up and tried again and no start.
Swapped on another "known working" ignition module and coil pack, NO Start. (in conjunction with the "known working" wires)
Sprayed some fuel down the throttle body to see if maybe my fuel was causing the issue; No Start.
Upon a suggestion that it was a timing issue, I pulled the cam sensor (which was fine in appearance) and put a new one- I checked and rechecked to make sure everything was lined up and dialed in properly; No start. Car has new double roller t-chain since last year and maybe has 100 miles on it since then... I have ruled that out.
Disconnected the MAF; still No start.
I replaced the crank sensor as it had a slight nick in it but still no start.
I swapped a "Known working" ECM with proper chip for injectors, no start
Considered the fusible links but the ECM is kicking on the fuel injectors and fuel pump and the starter is turning the engine over so not sure if I'm missing something there...
Went through my GM service manuals... nothing.
Used the Vortex "No Start" tree... I have good voltage at the ignition module plug but nothing is registering at the cam or crank sensors... (Not sure if I'm just not doing it right or not) Think I may have a short somewhere but not even sure where to begin...
Bear in mind that this car was just recently running (strong- no hesitation, nothing) and has not been driven since the last start. Just pulled out and put back in the carpeted and climate controlled garage.
Anyone have any ideas? I have had some help here from a few friends in trying to diagnose this but I cannot seem to make any progress and feel that I have addressed all the issues one would address when faced with a similar scenario.
Any suggestions are welcome!
