1999 f150 doesn't want to start
#1
1999 f150 doesn't want to start
I have a 1999 F 150 with 75,000 miles on it. I have owned the truck for a little bit over a year and it started to act up when I'm starting it cold. the motor cranks but doesn't want to fire and the problem is getting worse. I change the plugs and fuel filter when I purchased the truck and have been mixing injector cleaner in with my fuel. any ideas what is causing this?
oh and by the way I'm located in Arizona so the winter temperatures are not to extreme. I'm thinking that it was just a coincidence that it started happening when it started getting colder.
oh and by the way I'm located in Arizona so the winter temperatures are not to extreme. I'm thinking that it was just a coincidence that it started happening when it started getting colder.
#3
Senior Member
Have you checked the fuel pump? When you turn on the key, can you hear the pump in the tank pressure up?
You can check on the fuel rail. There is only 1 of these on only 1 rail. There is an oversized valve there. It looks like a big truck tire fill stem. Take the cap off, and press the little button inside and (be careful as it will spray everywhere if you have pressure) see if there is fuel in the rail. It will spray everywhere when it's pressurized. It will dribble if the pressure is low or none. If it has pressure, then you would go to step 2.
Check the spark at the plugs. (You can remove one wire from a plug and see if it sparks when its grounded out). If it sparks good, then to next thing. Let's get to that after we do 1 and if necessary 2. Good luck
You can check on the fuel rail. There is only 1 of these on only 1 rail. There is an oversized valve there. It looks like a big truck tire fill stem. Take the cap off, and press the little button inside and (be careful as it will spray everywhere if you have pressure) see if there is fuel in the rail. It will spray everywhere when it's pressurized. It will dribble if the pressure is low or none. If it has pressure, then you would go to step 2.
Check the spark at the plugs. (You can remove one wire from a plug and see if it sparks when its grounded out). If it sparks good, then to next thing. Let's get to that after we do 1 and if necessary 2. Good luck
#5
Senior Member
That could be your simple fix to a simple problem. Or Not. lol Good luck.
Last edited by akdoggie; 12-24-2012 at 06:28 AM.
#6
I checked the fuel pressure on the fuel rail and it seems great. sprays out a lot when key is turned. do you think it could be Electrical timing? I think if I had fuel pump failure that it would run rough when I floored it while driving
#7
Senior Member
You have cam and crank sensors to operate the firing. I wonder if one of those might be bad or dirty so it doesn't read right? That should set a code though. I'm at a loss if you have fuel and spark, you should have a running motor. You do have good spark right?