Starting Issues

Ok guys, got an unusual symptom with my pickup. After being parked all night, when I start it up in the mornings, I usually have to crank the engine for 4 or 5 seconds...nothing unusual. However, if the pickup is parked on an incline all night, it will start up very quickly, usually within a second. I'm not complaining! Just piqued my curiosity. Any thoughts out there?

parked with the front up or down?

Gotta be with the front up is what I'm thinking.

If its front down when you get a good start, it maybe just takin a second to get oil pressure up. Mine have similar symptoms till i got alluminum capsfor my oil and fuel bowls. From what ive read, replacement filters arent as long and allow oil to drain back into the pan.

If when you park front end up an incline...i have no idea

Sorry about that...it only happens front up.

Id say egr cooler. Pull the valve and see if its gummy inside. Cooler might be leaking coolant into the valve housing. Is there any white smoke at first when you start it?

on another site a ford mech suggested that he had seen a cracked HPOP reservoir cause similar starting issues. depending on where the crack is changing the angle might result in less leakdown and quicker starting.more leakagewould take more time to refill hpop reservoir.

Ya that also makes sense. Worth checking into.