Ford 7.3L Power Stroke (1999-2003) :: Extended Cold Crank - Run Little Rough?
Sep 16, 2015
For a long time I have been noticing extended cold cranks as compared to my dad's truck which has 50k less miles. Hasn't been much of a big deal until lately the crank has been getting longer to the point where it is noticeable and bothers me.
When the truck finally fires (10-15 seconds) it will sit and idle no problem, maybe a little rough, but that's about it. It will also run a little rough if you start driving it right away but will smooth out fairly quickly. When it first starts it is usually accompanied by a small puff of white smoke.
As a quick run down it has had the injector o-rings, glow plugs and UVCHs replaced about 36k ago. I can verify it isn't the glow plugs or the harness because it would start reliably down to -25 without being plugged in.
My thought is the injectors are just nearing the end of their useful lives (248k). Does this make sense?
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I have an 02 f250 230,000, first 7.3. I've owned it since Oct and put less than 6,000 miles on it. I have another cold crank no start. New glow plugs and Glow plug relay last weekend. Worked fine that weekend. It sat all week, then crank no start fri night, it was like 70 degrees for the high that day. Plugged it in over night and it started. Did not fire right up cranked it for a couple seconds. I drove it all day, started every time. Valve covers have 5,000 miles on them. Fuel Filter heater fuse not blown. But don't know how to check it for sure. And don't know where to go with it from here. Getting frustrated with crank no starts. No troubles found.
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So back ground is as such. Truck started fine before I replaced the hpop with t500 and did the driven diesel regulated return. I have double checked everything is plugged in. Now when I try to start it cold it will just crank. Yes I get smoke and oil pressure both places. If I give it a shot of ether it will start right up and run fine all day. What am I missing? Yes I know ether bad.
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I had issues with my F250 cranking last winter when the temperature dropped, so I changed out the glow plugs in the spring. I hadn't been able to truly test them yet, since it hasn't been cold, but the other morning my truck wouldn't crank up. It was 40 degrees out the night before, and it had been almost 24 hours since I cranked the truck, but it seems to me like the truck shouldn't have an issue in that mild weather.
I'm not sure what I need to do next to try and fix this problem, it's been driving me crazy and risks stranding me if I park for a while in an area where I am unable to plug by block heater in. The truck cranks fine when I have had it plugged in for a while, so I'm fairly certain it's a heating issue. I haven't done any tests since last year, but I know that the GPR was working properly last winter, which is why I changed out the glow plugs.
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I have a early 99 f250 super duty 7.3l and it's giving me fits. about a month ago the truck started to do a hot no start. drove truck for about a hour. Shut it off and half hour later no start. Let it sit over night and would start with long crank.
Changed CPS no change. Pulled tuner and set back to stock. No change.
Changed fuel filter, no change.
After reading forums changed IPR and truck started and ran great. About a week ago back to the same problem. Battery's are about 2 months old. Oil change and oil filter a month ago.
Checked the hpop reservoir and its 1/2 from the top.
Checked fuel bowl and it has fuel. no sign of oil in it.
Drained bowl and watch bowl fill back up. seems to fill quickly.
Pulled passside valve cover to check for bad orings while cranking.
Every thing seems fine. have not done driver side yet. used FORSCAN and ran buzzed test on injectors and they all buzzed what seems to be about the same. ran test couple of times to make sure. this morning I ran a live scan while cranking and this is what I got right before it started. ICP 660.6psi, IPR 64.84% and RPMs 227. took 8.86 seconds to start. after work scaned again for hot no start and this what I got. ICP 292.9psi, IPR 55.86%. and RPMS 203. unplug ICP and no change. still will not start. one thing I did notice when plugging ICP back in I looked down in side at the pins and can see what seems to be bubbling around one of the pins. the pig tail has just the slights sign of oil.
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So how long does one have to crank until it is considered an extended crank? 2 seconds, 5 seconds, 10 seconds.....?
The reason I ask is after all the motor work I did on my truck sometimes she fires up in less than 1 second of cranking and other times it take maybe 2 seconds of cranking. I do not think 2 seconds is considered and extended crank time but was just curious about what is considered extended cranking.
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1999 e350 has 130k and original injectors, had a minor power loss while driving that i determined was injector o ring needing replacement since the fuel bowl also had black colored fuel. installed and have been cranking for about 4 days now and am recharging batteries again. whenever i changed any injectors in the past I've refilled both sides of the oil rails although on this one I didn't. So wondering what to expect concerning the process of filling oil rails via hpop. Does have a hpx line...
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I just started having a cold start problem with my '02 Excursion this fall and I'm at my wit's end trying to fix it. Truck starts fine above about 45 degrees and when it's warm. If I plug in the block heater it also starts fine in the cold. If it's not too cold I can eventually get it started by continuing to crank it. It blows white smoke while cranking and for a few seconds after it finally turns over. Smells like fuel. Runs rough for 30 sec after starting when it finally turns over. Definitely seems like glow plugs aren't working. This truck started no problem on GPs alone without plugging in down to -20 deg F before this year.
I started by cleaning all battery connections, including the two ground posts on the engine block, I replaced one bad battery (diagnosed by Autozone; other one was OK), I checked the resistance of the glow plugs (only a few years old with about 30k miles on them) through the connectors on the GP control module (all were about 1 ohm), and confirmed 12V at the power pins in the GP control module connectors. I then replaced the GP control module and the problem is still present. Battery voltage drops from about 12.6 V before I start the GP cycle to about 12V when I turn the key to "ON" and the GP light comes on. How much should the voltage drop when the GPs are on? What the heck else could be wrong??
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My truck runs very rough and lacks power when cold, even during the Texas summer. Once it warms-up, everything is fine. It's almost like turning on a light switch. If it's plugged in for a couple/few hours, it's smooth as soon as it starts. I'm assuming it likes the oil once it reaches a specific temperature. What my problem is?
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My truck runs very rough and lacks power when cold, even during the Texas summer. Once it warms-up, everything is fine. It's almost like turning on a light switch. If it's plugged in for a couple/few hours, it's smooth as soon as it starts. I'm assuming it likes the oil once it reaches a specific temperature. What my problem is?
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I have a 2001 F350 7.3 with a 6" lift..I have a extended pitman arm for the lift and I have just noticed that it is rubbing when I do a left turn....
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I can't figure out the problem with my extended cab door. Driver's side doesn't open with either door handle.
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I am intrigued by this engine and it's cold start issues so I am trying things out to see what works. If I plug it in it starts like summertime. If it's as cold as 30* out I run the glow plugs for two minutes and it starts without much effort and once running purrs like a kitten, no chug a lug, no romping, little smoke. When it gets down into the 20's I run the glow plugs for two two minute cycles, a little more cranking time but starts same as above. Down to 18* and I cycle the glow plugs twice for two minutes and it cranks, tries to start but won't. Key off, back on for two more minutes and it starts right up like a warm summer day. It hasn't been colder than 18* here this year so this is the end of my report for now. I haven't taken the time to check the glow plugs which is on my list but this summer it'll get done.
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I had been fighting some problems with injectors for several years. I didn't have time to dig into it. I knew what I needed to do, just needed to find time to do it. I honestly thought it was and injector and thought I would have to go to new sticks because I've had so many problems with the remans.
Well I finally had time last week. I pulled the passenger side valve cover and ohmed the injectors. It would be almost impossible to get the leads in the injector while installed the truck. I kept an old valve cover harness, so I cut a pig tail off of it and plugged it into the injectors so I could test. You can see the meter attached to the pigtail in the pic.
To my surprise all four were all right around 2.7 ohms. You need to set your meter so you are getting a reading w a decimal. If you set it to high it will only show a whole number and it is better to have a more accurate reading.
I then plugged the wiring harness back in and tested it from there. The #7 injector gave over 6 ohms. This told me that my wiring harness was bad. I went OE and replaced it. I had a problem w a Dormant valve cover gasket before so didn't want to go that route. After I replaced the gasket and harness all my readings were under 3 ohms. They were all lower than w the old harness.
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I have my 2002 Ford F250 Powerstroke. 175,000 original miles by me and only me. SCT, MBRP, Howes or Stanandyne almost always. Runs like new. It starts rough if I don't plug it in. Even on 50 degree days. Then it levels off and runs perfectly. If I plug the truck in I can drive off immediately with perfect operation of motor. I just went 1500 miles. Pulling a car hauler with car. NP at all.
New Glow Plugs, GPR "Yes it works", IPR, New Harness, Buzz Test shows it's fine, New #8 injector last year, New O rings HPOP. My buddy who is a PStroke guy said this trucks runs too perfect for it to be injectors. He recommends seals for the injectors. What does this mean. Or what else can it be. Where should I start.
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I have a 2001 7.3 with 259,000 miles. It does not get too cold here, however over the past few winters when the temp is below 50 at night the first minute or two of running out of the neighborhood is tough going unless I let it heat up. It has been getting worse over the past few years and now if its even 55 or 60 I need to let it heat up. Glow plugs? Injectors?
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I have a 01 7.3 crew cab dually and it's had cold start problems since i got it in 09.I have replaced everything i could think of including glow plugs gpr,harness and batteries. Any temp below 40 i have to plug it in . If i cycle it 3 or 4 times it will start but it smokes and runs ruff. My 00 7.3 excursion starts up down to about 10 degrees than i have to plug it in so i know dually is not right.
I have a afe intake,1.5 injectors, driven diesel rr, adrenilin pump,dp tune by gear head. Kinda at wits end don't mind plugging it in in dead of winter but now one night it's 30 next it's50 and i don't have to . Also have fully built trans by level 10 if it matters .I get battery light coming on every now and again. New alt about every year and a half.
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Replaced o-rings, injector cups, glow plugs and UVCH with all motorcraft parts 2 years ago and the ICP, IPR and resealed the HPOP last year. I use rotella 15W-40 oil. It has been hard to start when it is cold and runs rough with little power until warm for a few seasons now when it is cold outside. There are no fault codes or issues otherwise with the mostly stock truck. A buzz test when the engine is cold only #6 sounds strong and #8 isn't quite as bad as the others but the others are hardly audible.
Cause:
1) Can 6 to 7 injectors really go bad in 165k miles? If it is injectors I believe the Alliant look to be the way to go with type ADs?
2) Since it is like flipping a switch and the number of injectors effected is it possibly the 0.1% of the time it is the IDM when there is a miss and no SES. From my searching and swampdiesel if there is a miss and no SES it is 99.9% it is not the IDM or harness since it actively checks continuity.
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I have an issue with my 7.3.... the truck will not start if it sits overnight without being plugged in, even in 65 degree weather. It starts and runs with a rough idle for about 10 seconds after its been plugged in for an hour, after the rough idle is gone it runs great .. it will Stat back up as long as the truck is warm (70+).... I've replaced the batteries, glow plugs, starter (it was going bad) and fuel filter. .. also replaced the gpr today. ....
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Trouble starting our 2008 escape after she has been sitting for atleast 4-5 hours (or more) We can get it going usually but we have to attempt several times before it 'catches'. After running and turning off, it starts no problem. Have replaced mas and didn't work. No 'check engine soon light' so just trying to narrow down the problem. Have replaced the fuel filter and all the spark plugs. Love my escape but not when it doesn't start!!
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My outback started giving me intermittent extended crank starting problems on cold engine starts a few months ago. I brought it in first to repair shop and then dealership. Battery replaced, all systems checked out, computer update, camshaft sensor shim, and still I have the problem. What this could be?
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