I have problems starting my truck

[Evynlee]

My truck has problems cranking over every time I attempt to start it. I've noticed in the last two weeks that when I do get my truck started my idle is really low. I have fairly new batteries only about four months old. Not to sure what the problem is.

[Evynlee]

I guess I should say it's a 2000 F350

[ToMang07]

Any more info? Cranks fast/slow? How long?

Does it run good once started, fluids all checked/good?

Fuel filter checked/replaced/good?

Do you run any additive?

Smoke when starting? Color?

[Evynlee]

Cranks slow, about five seconds.. It runs good yes just low idle. Fluids are good. I drained my fuel filter and started my truck to make sure it blew out any random stuff I may have had in it. Fuel filter is about eight months old. I do not run any additive. It blows regular grey smoke when started.

[ToMang07]

Originally Posted by Evynlee

Cranks slow, about five seconds.. It runs good yes just low idle. Fluids are good. I drained my fuel filter and started my truck to make sure it blew out any random stuff I may have had in it. Fuel filter is about eight months old. I do not run any additive. It blows regular grey smoke when started.

Well, might be worth checking the batteries any way, (load test) and see if they are holding their charge, the alternator could be weak and not charging them enough.

I would definitely check out the GPR, might be time for a new one. The reason I say GPR is my truck doesn't smoke when it starts.... so maybe the Glow plugs are on their way out or the relay is weak.

Do you have or know someone that has a good scanner?

Just throwing out ideas, hopefully someone with more experience chimes in!

[countryraised]

at summer temps in Indiana you should not have smoke at start up, could be the GPR/ plugs but might also be leaking injector o-rings?

[the1laf]

I can bet it's your low pressure in your HPOP. the contacts could be spread just a little bit in the connection to the ICP sensor....
I quick test would be to get a 5.6-10k resistor and do the K-mod. if the HPOP is running low pressure it should fire up like a beast with the resistor in...
I found this out when I pulled my resistors a while back, use a tiny pair of needle nose pliers or tweezers to bend the female ends in the plug tighter to the way they used to be and the problem is solved.

[Zaairman]

It's summertime in Indiana... no glow plugs or GPRs are needed. Sounds like the HPOP is loosing oil, and you're having to crank multiple times to build up pressure.

[Evynlee]

I'll try to go plug my truck up to a computer tomorrow. I imagine that's the only way I would be able to actually check for that.