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I have a 2ltre 2001 Bora which turns over when starting but won,t fire from cold start. However, when I managed to fire after the 9th attempt and gave it a run, then stopped and turned it over again, it fired first time and every subsequent turn during the first 1 hr.Once I left it standing all day and tried to start it from cold, same problem, it will not fire.
Can you suggest possibe causes of fault.
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Likely dribbling injectors and/or bad spray patterns.
Many older fuel injected cars can sometimes get themselves into a sort of bad mood where for no apparent reason they fire briefly when the key is turned and then stop and further attempts at starting just wets the spark plugs.
Pulling out the fuel pump fuse and cranking with the throttle wide open will usually restore the engine to health until the next time.
I notice opening the throttle prior to starting does tend to overcome the problem, being careful not to over-rev the cold engine which means very quickly lifting off to a fast idle without actually lifting off altogether.
Hey Gordon,
Remove your battery, take it to O'Reilly's, AutoZone, etc.. have them check the CCA (Cold Cranking Amps)-load test.
.. this is what makes your car crank.>Amperage< ... 12+ volts might run the lights.. but just voltage WILL NOT crank your car.. the age of the battery doesn't matter either..
check the color of your spark if it is blue your good if orange replace coil dependig on your setup and if you have 1 coild or 8 coils you many have to check each cylinder seperate just pull out spark plug replace the spark plug wire have someone try to start car and lood at color of spark i should note dont hold the wire just let it rest close by
if that is ok replace your crankshaft postion sensor as it tells the cars ecu when and to what cylinder to fire spark to faulty crankshaft postion sensors 99 percent of the time wont allow car to start or very hard starts the other 1 percent
Sounds like there was more damage present than just the head gasket. Perhaps a crack in the cylinder head. Was it pressure checked? Was the car overheated? The white smoke sounds like coolant leaking into one or more cylinders.
Your cold start valve is not opening to assist the firing. It function is to provide extra fuel to ignite the all combustion chambers easily. When the engine doesn't have this extra fuel from the cold start valve, it will take a few times to get it going. The cold start valve is turned on at the time of starting only if the ECM get the signal from coolant temperature sensor saying it is at a preset level. When the sensor is bad, it can give a wrong value so ECM think that temperature is hot so not turning the Cold start valve.
Replace this coolant sensor first, then the next thing is to check out the cold start valve.
This is a fuel pump pressure issue, it is not holding pressure, you must remove the fuel tank and replace the fuel pump, also replace the fuel tank connector.
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