My 2000 Chevy Silverado is intermittently hard to start mostly when it has been run & shut off.?

Question

You have to try it then turn key off and then try it again, sometimes it starts on second try & sometimes it takes more tries. When it finally starts it runs great. Any ideas. Thanks

Answer 1

Fuel pump?

Answer 2

Intermittents are hard to diagnose as the only time to be sure of what is the problem is to do the diagnosis when the truck acts up. That means being prepared for the condition when it happens. Before doing the diagnosis for the problem it is important to eliminate potential caused that could be found by normal checking. Those things include scanning of all on-board modules for codes as these might be a hint. I would also check the air and fuel filters or just replace them to be sure. Checking for maximum spark outputs would also be a good idea. You can also visit a dealership to find out if they have had any recent technical bulletins or other trucks act similarly. After that, you will have to do your diagnosis when the motor acts up. Usually you will find your truck lacks spark output or proper fuel pressure. The only thing you can do is to either leave a fuel pressure guage attached to the fuel rail and have a secondary ignition output checker with you. Fuel pressure has to be around 55 psi to run at idle. Good luck and have patience as to install parts because of guess work is really expensive.

Answer 3

I also say fuel pump. I have a 2000 tahoe that has gone through 3. The last time it did exactly what you are explaning... to try to squeeze a little more from it you can turn the key to auxillary, then completely off and repeat. You will hear your fuel pump "buzzing" from under the truck. That helps build up the fuel pressure which is why it won't start- low fuel pressure. Hope this helps!

Answer 4

4 things to check here,
1, check battery power level with a meter,see if the power level drops off alot between doing nothing and trying to start, if so,replace battery.
2, check battery wire connections on both ends,battery and ground, battery and starter solenoid, repair as needed.
3, check starter and starter solenoid, you can remove both as a unit and take it to auto zone and have it checked.
4, you could have too much timing in the distributor set point, check that you are set within spec, too much timing advance will make the motor hard starting when hot, if nothing else has paned out, retard the timing off of set point about 3 or 4 degrees.

Answer 5

sounds like the fuel pressure regulator. the regulator is located in the fuel rail on the drivers side. it is round and has a small line hooked to it. take the line off and see if it is dry. dry is good. if gas comes out of it it is bad. there's your problem. happens all the time. you also might change fuel filter. needs to be done every 15-20000 miles. good luck

Answer 6

Barb Wyre is correct fuel filter and regulator are the easiest and cheapest to check, but if those dont show any results it is probably the fuel pump on its way out...

Answer 7

I love do it yourselfers. You people give me lots of good work at the dealership. All I can say is keep up the good work. We appreciate your lack of knowing what your doing. My guess is you got 2 clowns who have no idea what they are doing, either get the same 2 clowns to undo what they did or tow it to the dealership or repair shop & have them fix it

Answer 8

a weak ignition modgual

Answer 9

I guess you have to sent it for service.