Starting rough

[ZachBoyer]

ok. So my batteris went out on my pickup so i got two new 750 CCA then they went bad within a week. (were tested by checkers and came up at 600 amps) So i got new ones and installed them and realized they were 720 CCA's. My truck has issues starting warm or cold. All starting times engine warm or cold. My passenger side bettery cables are corroded and i havent replaced them yet. When cranking on a first start it will puff smoke while starting...

Also checkers tested my alternator and it is putting out the proper power but has excess ripple which they said would not contribute to any of this they says... Thanks

[djsdiesel]

Check your glow plugs and glow plug relay.

[ZachBoyer]

their fine. Checked... It starts like this weather my truck is warmed up or not also

[GoldieStroker944]

what do u mean by rough start does it just crank alot or is it just dead all the time??

[PoweredByPotato]

If it is just cranking too slow, making it hard to start, then I would look into the starter circuit.

It sounds to me like the starter is just about done for, and is pulling too many amps. Either that or you have a faulty cable between the battery and the starter..

[ZachBoyer]

Cranking very slow like my batteries are dead. But batteries are good have had them checked.

i just put new cable ends on. Starter still sounds healthy. Every now and then it will start like a charm but my voltemeter drops as low as it does when it is really cold out when i warm my plugs up so confused on that. so i would say its doing something strange before the starter??

I thought it may be my CCA's I have 720 but i thought stock were 750's? So I SHOULD be fine?

Thanks!

[PoweredByPotato]

Originally Posted by ZachBoyer

Cranking very slow like my batteries are dead. But batteries are good have had them checked.

Id swap starters.

[ZachBoyer]

i can watch my voltage gauge drop too low before my starter is on...

[ZachBoyer]

I got this in a PM if it is worth help to anyone...

ground your motor better and check grounds to batteries.and get 850cca batteries.
it also sounds like glow plug solenoid is going bad.
check out outlawdiesel.net

What is the stock CCAs that ford provides? and my glowplug solenoid is only 6 months old. The only problem I would suspect if any is that it is a glow plug solenoid out of a newwer powerstroke...

[PoweredByPotato]

If it is cranking SLOW it has nothing to do with glow plugs.