Car cranks fine but does not fire up right away, crank for 5 to 10 seconds and have to try 2 or 3 diferent times, fuel pump has failed at least 3 times and been replaced, still sounds loud like it is working to hard.
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Re: hard starting, excessive crank time
Try changing the fuel filter and turn the key on and off several times before starting engine. once running check the vaccum line on the fuel pressure regulator.the regulator can leak fuel from that connection.
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The way the newer systems work the engine spins at least a few turns while the computer checks everything for correct readings. In the old days it was "cool" to be able to reach in and "bump" the key and have the car start. It meant you had the car tuned perfectly. Now the vehicle computer will not turn fuel on until it is happy with readings. One trick you can try is turn key to full on position and let it sit for a second or two before turning key the rest of the way to crank. This allows the system a second to do it's checking without wasting power cranking. Had Nissan that was just like this. Just wait a few beats before turn to full crank. You can also listen for fuel pump whine in that few seconds, and then hopefully whine to stop when pressure hits full. If whine never stops fuel pump may be getting weak. If you can get access to higher end code reader you can also check for "pending" codes that may be showing up sometimes (holding start up) but then working (so engine finally fires).
Try replacing the cold starting valve. Also, it would save the battery and starter by cranking a couple of turns then stop. Wait a few seconds giving the fuel time to run into the engine and crank again. It should fire right up. Count to ten.
Not uncommon for fuel injected cars to start hard after prolonged storage. I have a 2001 truck for sale and today when I tried to start it - it started really hard, cranked on it for 20 seconds or so then let it rest and cranked again for 15 seconds before it fired The cause is injected motor have a return line to the gas tank and over time the fuel pressure bleeds off - as long as it starts good 20 minutes after a hard start it is pretty normal
Sounds like low fuel pressure or a stopped up fuel filter. If the vehical has two tanks does it act the same on both tanks? there are fuel pumps in both tanks and one one on the frame. if the one on the frame is slow or not working the tank pumps can still run the car sometimes but it has troble getting started
A very common problem on the 99 S10 is a leaky fuel pressure regulator in the intake plenum.What happens is when the truck sits for a few hours or more the regulator leaks all of the fuel in the fuel injection system into the intake air plenum. This does 2 things, 1 it has no fuel pressure when starting and 2 it floods the air intake with raw fuel. Sometimes if you turn the key on wait 3 seconds then turn key off then turn key back on and just turn key to crank starter for a split second and wait 3 seconds.do this 3 times to repressurize fuel system then crank to start(you will hear fuel pump buzz each time you do this.also you may have leaky fuel injectors. Try to crank engine with the gas pedel to the floor. This will tell the computer to stop spraying fuel trhough the injectors and it will start. Joe ASE Master Tech
this is a battry problem you can charge the battery long a nuff to start after motor is running but you have a dead seal i would recommend wall mart best price and warrenty if you replace the battery with there 2 yr warrenty with-in the 2 yrs you will never hafe to but a nother battery for the life of the vehicle////// if this is not your problem i would say your coil pack is cracked