99 & up 7.3L Power Stroke Engine and DrivetrainDiscussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
My 1999 PSD seems to crank a long time before firing up. I am talking 4-5 seconds. Is that abnormal ? If so what do I do about it. I have had 1 other PSD (1997) and Cummins in the past and they always fired right up.
4-5 sec seems just a little long. Mine usually fires after 4-5 compression cycles (guessing 2-3 sec), but sometimes takes longer when it's real cold.
You might have a slight leak in your HP oil system that's delaying the pressure buildup to 500 psi before the injectors are activated. Or it might be a GP issue, which is easy to check. Go up to the FAQ subforum and take a look at the Hard/No Start thread.
If you have a scan tool that will monitor engine parameters, you can check the HP oil pressure by monitoring ICP while cranking.
4-5 sec seems just a little long. Mine usually fires after 4-5 compression cycles (guessing 2-3 sec), but sometimes takes longer when it's real cold.
You might have a slight leak in your HP oil system that's delaying the pressure buildup to 500 psi before the injectors are activated. Or it might be a GP issue, which is easy to check. Go up to the FAQ subforum and take a look at the Hard/No Start thread.
If you have a scan tool that will monitor engine parameters, you can check the HP oil pressure by monitoring ICP while cranking.
Fill your sig. in.. Where are you from, cold weather????? Being in a cold environment will affect it and the type of oil you are running in the cold weather. Try switching to a lighter oil if still experiencing hard starts
My 1999 PSD seems to crank a long time before firing up. I am talking 4-5 seconds. Is that abnormal ? If so what do I do about it. I have had 1 other PSD (1997) and Cummins in the past and they always fired right up.
Thoughts ?
My dad has a 2000 xl extended cab that has had a long crank since he had it, had 120k when he bought it, never dove into it, but I suspect HPOP oil system problems with it also. He had a no start hot problem. Obvious ipr ring problem, took it out and sure enough had a burnt out o ring, put a new ipr in it because he wan't to just replace the valve while he was there, starts fine hot, but still cranks long.
Only two possibilities if you ask me, low compression, or hpop build slow. I want to replace his hpop but he doesn't want to spend the jingle right now. He DOESN"T have low compression though, it starts fine no matter what the weather, just cranks long. Especially since I put the db electrical starter on, my 97 has always fired on about the second time around, can hardly turn loose of the key before it fires......
__________________
Sold, back when the snow was on... (Jan 2010!)
1997 PSD 3/4 ton 4x4 SC LWB SRW; 5 spd; 3:55; K&N open element/homemade intake; gutted EBPV piston, plugged hole; 3 in. downpipe; SCMT 1705; shimmed to 70 psi; 120,000; TTB DiPricol 0-60 white face boost gauge, DiPricol 0-1600 white face pyrometer, SOLD in between gauges for now; A-Pillar mount for now. DIY 160cc Injectors.DIY IDM mod. ValAir O-FE w/3400# plate; Front and rear tank filler neck mods
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
), AIS, 
DiPricol 0-60 white face boost gauge, DiPricol 0-1600 white face pyrometer, SOLD in between gauges for now; A-Pillar mount for now. DIY 160cc Injectors.DIY IDM mod. ValAir O-FE w/3400# plate; Front and rear tank filler neck mods
Linear Mode
