Starting problem again
Thread Starter
|
Senior User
Joined: Sep 2007
Posts: 202
Likes: 0
Starting problem again
My 2003 truck starts and stops a couple of times before it keeps running. Only first time in the morning, then starts fine the rest of the day. Just changed filters so thats not it.
Fleet Owner
Joined: Nov 2003
Posts: 27,881
Likes: 3,595
Might be injectors:
Typically when one injector fails, we find that the engine is hard to start and is low on power. If two injectors fail starting will be very hard or the engine will not start at all. If you do manage to start the engine, it will be very low on power.
When an injector fails it can allow combustion pressure to push back into fuel passage and the aerated fuel will make the engine die. A single failed injector shutting down motor is pretty common.
One easy check for injector problems:
Pull the fuse cover under steering wheel with a flat blade screw driver turn the screws 1/4 of a turn. Pull fuses 20 FICM, 40 Fuel pump, and 103 PCM. You might need a fuse puller or needle nose pliers. Be sure there is fuel above the standpipe. If you want pull fuse 40 last and use the fuel pump momentarily to fill the fuel filter housing. Then have someone crank while you watch for bubbles. Do not crank on it for more than 10 seconds max. This is the easiest way to determine mechanical condition of injectors. What happens is combustion gas will come through the pintle seat and into the fuel gallery in the head and up into the filter
Typically when one injector fails, we find that the engine is hard to start and is low on power. If two injectors fail starting will be very hard or the engine will not start at all. If you do manage to start the engine, it will be very low on power.
When an injector fails it can allow combustion pressure to push back into fuel passage and the aerated fuel will make the engine die. A single failed injector shutting down motor is pretty common.
One easy check for injector problems:
Pull the fuse cover under steering wheel with a flat blade screw driver turn the screws 1/4 of a turn. Pull fuses 20 FICM, 40 Fuel pump, and 103 PCM. You might need a fuse puller or needle nose pliers. Be sure there is fuel above the standpipe. If you want pull fuse 40 last and use the fuel pump momentarily to fill the fuel filter housing. Then have someone crank while you watch for bubbles. Do not crank on it for more than 10 seconds max. This is the easiest way to determine mechanical condition of injectors. What happens is combustion gas will come through the pintle seat and into the fuel gallery in the head and up into the filter
