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Showing results for tags 'wont fire'.
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I have a 2000 996 with 107k miles I had the AOS replaced about 20k miles ago. I replaced my crank position sensor about 5k miles ago to prevent hot start issues. For the third time in about 3 months (I don't drive every day) my 996 wouldn't fire after filling up with fuel. I had been having issues with gas station pump nozzles shutting off prematurely - in California where we have the vapor recovery nozzles that aren't good for topping off the fuel. But the only way I could get my tank close to full was to fill it very slowly. The first time I had the starting trouble after fueling, the car started up normally, but as soon as I pulled out onto the street and stopped at a traffic light the engine died - as if the fuel pump had stopped. When I tried to restart, the engine cranked but with no signs of fire. I pushed it back into the gas station and after 15 minutes with tow truck on the way I tried one more time - with the pedal floored - and it started after about 5 seconds of cranking. The second time about a month later, I was far from home and it wouldn't start at all after refueling (again after topping off). I found something on the internet that said you can over-fill the tank and get fuel in/near the charcoal canister - causing some sort of safety shut-off to protect the canister from damage. So I tried to siphon some gas out but my siphon tube went in the filler pipe at least 36 inches without getting wet I figured over-filling was the issue. Eventually I got frustrated, cranked with wide open throttle and after about 5 seconds it started. I replaced the fuel line vent valve to fix the premature nozzle shut-off hoping it would fix both issues. After doing so I drove to the station and filled up with fuel - no premature shut-off of the nozzle this time. But again the car wouldn't start. Without hesitation this time I cranked with wide open throttle and it started after about 5 seconds. I found this link on the internet among others saying the cool fuel can prevent a worn piston from building pressure - http://www.fixya.com/cars/t3860084-after_fuel_fill_cap_removal_2003_996 Think my next trial will be to replace the fuel pump unless anyone has a better idea? Should I test the pump pressure first before replacing? It isn't throwing any fault codes - I'm getting some occasional idle surge with the engine is hot - just started recently. Last I checked (after the first incident) nothing jumped out at me on the Durametric. All advice and DIY links appreciated. Thx