Problem?hpop,ipr,injector o-rings or injectors? - Ford Powerstroke Diesel Forum

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post #1 of 18 Old 02-18-2012, 07:10 AM Thread Starter
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Problem?hpop,ipr,injector o-rings or injectors?

So I have a little performance problem that when my truck warms up the oil temp is about 120 degrees when you give her the throttle it starts to do like a chug almost like there is a miss on one of the cylinders or multiple cylinders and it losses it's performance runs awesome when it is cooler under 110 and the oil systems and injectors are all stock?


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1997 250 7.3L D66 Rosewood stage II t500 HPOP crx racing intercooled Mrbp 3'' down pipe 3.5 straight diy intake (chip is at the head doctor at bdp getting tunes)




1972 250 6.4L(390 FE.(gasser)


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2007 250 6.0L (325 hp stock )
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post #2 of 18 Old 02-18-2012, 07:57 AM
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Does it only get up to 120*F on the EOT? What about ECT?



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
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post #3 of 18 Old 02-18-2012, 08:02 AM Thread Starter
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Quote:
Originally Posted by jesilvas View Post
Does it only get up to 120*F on the EOT? What about ECT?
Well by stock gauge it is in the warmed position I don't have a aftermArket gauge monitoring the ect
And no the eot keeps climbing to the most I have seen 157

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I do support powerstroke power

1997 250 7.3L D66 Rosewood stage II t500 HPOP crx racing intercooled Mrbp 3'' down pipe 3.5 straight diy intake (chip is at the head doctor at bdp getting tunes)




1972 250 6.4L(390 FE.(gasser)


My Dads
2007 250 6.0L (325 hp stock )

Last edited by 72Ford250; 02-18-2012 at 09:45 AM.
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post #4 of 18 Old 02-18-2012, 10:20 AM
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How are you monitoring the EOT if you can't monitor the ECT?



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
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post #5 of 18 Old 02-18-2012, 10:22 AM Thread Starter
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With a gauge that has a temp sensor that I have plumed into the hpop reservoir fill plug


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I do support powerstroke power

1997 250 7.3L D66 Rosewood stage II t500 HPOP crx racing intercooled Mrbp 3'' down pipe 3.5 straight diy intake (chip is at the head doctor at bdp getting tunes)




1972 250 6.4L(390 FE.(gasser)


My Dads
2007 250 6.0L (325 hp stock )
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post #6 of 18 Old 02-18-2012, 10:30 AM
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Oh gotcha.
It could be many things. I'd just scan it first.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
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post #7 of 18 Old 02-18-2012, 05:37 PM Thread Starter
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OH i should add it is bad with the chip (php) on 65 performance

I do support powerstroke power

1997 250 7.3L D66 Rosewood stage II t500 HPOP crx racing intercooled Mrbp 3'' down pipe 3.5 straight diy intake (chip is at the head doctor at bdp getting tunes)




1972 250 6.4L(390 FE.(gasser)


My Dads
2007 250 6.0L (325 hp stock )
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post #8 of 18 Old 02-18-2012, 05:56 PM
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Yea it'll be bad cause there's obviously something wrong. So the extra power the chip is requesting isn't there and only makes the problem more apparent.
Scanning for codes is about the only thing you can do.



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4R100, 2wd
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post #9 of 18 Old 02-18-2012, 10:39 PM
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I have a similar problem... I haven't taken a direct reading of the oil like you have, but when I plug the MODIS into the truck and monitor the data stream, my EOT reading is never above 140ish. As a result, I can't do a cylinder contribution test, and overall my truck has been driving like a slug. A few months back I towed my friend's disabled van (about 5500 lbs) on my car hauler that weights about 1000 lbs. I could have sworn there was a soil plough and three point hitch behind my truck ripping through the pavement.

I changed the sensor to make sure, and it does the same thing. I've also had success unplugging it to fool the computer into defaulting to a 207 deg F EOT reading (with a check engine light), and I've also been able to change the perceived temperature by putting different resistors across the connector. So far as I can tell, the EOT circuit is a constant-current type circuit that lowers voltage as the EOT sensor's internal resistance lowers as true EOT rises.
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post #10 of 18 Old 02-19-2012, 07:07 AM
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I have a somilar issue but I never take my truck over half throttle til its completly up to operating temps...

The oil gets thinner when it gets hot...with that in mind, you will have less pressure to your injectors. On your performance tune, you computer is requesting a higher demand of oil from the hpop then it can supply so it starts cutting out.

97 Single Cab F250 4x4 5 speed

Swapped D-60
Locked front and rear
160 sticks
Wildman Tunes
Hood Stack
OFE clutch
T500 HPOP
Linex rockers
35" MTR Kevlars
and a bunch more...
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