Why is my truck having problem starting at times?

FLYFISHIN

MEMBER
2007 CHEVROLET COLORADO
60,000 MILES

What happens is. We go to start it it turns over but wont start. We just wait 10 min and try it again and it starts right up, the truck runs great except for that one problem and we cant seem to find the problem. We have had it in seeveral times to try and get it fixed but it still keeps doing it and now it is doing it more often. We are at a loss. Thank you

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

https://www.2carpros.com/articles/car-cranks-but-wont-start

Next time it refuses to start don't wait for it to make up its mind-do below immediately to determine if its fuel or spark problem

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, Do you hear the fuel pump come On when you turn key on? If not check fuel pump fuse and fuel pump relay if okay-check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,coil's resistances,cap and rotor,distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing