I am new to the PSD world and seem to be having some troubles with my truck. The truck (F250 Extended Cab auto trans) has 173,000 Miles and is completely stock. I have owned it about a year and a half. Within the past year I have replaced the fuel filter, CPS, glow plug relay, valve cover gaskets, glow plugs, and the alternator.
Everytime I start the truck it chugs for about 15 seconds and smooths out. It does this when its cold, hot, or been driving all day exc.
It also seems to be down on power. I did not notice the change overnight so it seems to have been gradual. The most I ever pull with this is 1 car on a 18 ft trailer. On the flat highway I have troubles getting the truck to go over 60 unless I go down a hill. there seems to be no speed or RPM increase from half throttle to full thottle.
I get an average of 14 MPG when towing this load.
When the truck is empty and I am just driving it seems to lack power over half throttle in any gear.
A friend of mine has the same truck with nearly the same miles and I can tell a big difference between his truck and mine. he has the same gear ratio, same auto trans and his pulls much better. His turbo sounds much louder than mine as well. I am not sure how much you should hear them but you can hear his much more than mine.
So... Where should I start? What should I check out first? I did some searching on the forums and there seems to be several things that could cause this so I am somewhat lost on what to do first.
I really appreciate the help and always enjoy reading the forums.
Hello,
I would consider starting with how well the engine breathes. Do you still have the original catilitic converter? Is there any restriction on the vacuum gauge? Also does the truck take a while to get up to speed (about 25 - 30mph)? When it chugs does it sound like it wants to stall? Just some questions to get this thread going.
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Iraq vet and back home for good! 95 F250 SC 7.3PSD 4x4 84 Bronco II project truck will be turning 37's
when im done with it.
sorry by vacuum gauge i meant air filter restriction gauge. Might try (when engine is cold) loosening exhaust downpipe from turbo, by doing this it will rule out exhaust problems. for gitty up and go speed the best example i can give is if i am on gravel or grass my truck will easily spin the rear tires. (found that out by accident but thats another story)
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Iraq vet and back home for good! 95 F250 SC 7.3PSD 4x4 84 Bronco II project truck will be turning 37's
when im done with it.
I would get rid of the cat , Also I'm thinking fuel pressure as well like dieseltrucker said. My cat was plugged bad . Maybe your EBPV is sticking . . . ALso check up pipes for soot to see if there are any exhaust leaks. Another thing to check is Turbo impeller for nicks or signs of dusting. Most likely fuel /boost related though.
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95 E350 PSD HD Cargo , BB shim , E4OD , B&M aluminium Trans pan , HD cooler , Cat sleeps with the fishes , 3:55 D70FF, Michelin LTX " E " ,Not installed yet DP flashed PCM (60 Tow )Autometer Triple Pillar Guage pod , New Injector O-rings /IPR /lift pump / filterbowl @ 235K , Timbrens SES kit
1977 F350 Dually Dump , 460 , 429 POLICE heads , 4:56 D70FF, Edelbrock Intake , Holley 850 dbl pmper ,MSD IGN , Custom HiPo C-6 Trans , Dual Exhausts , Bridgestone "E" Tires
1983 KZ1000R , Yoshimura Stage I
1982 KZ1000 , 1045 Wiseco , Turbo ready
1990 KX500
just for ha ha's when you're in neutral can you rev it all the way up? (about 3200 rpm) Just checking the TPS. Seems like a lot of your probs are over half throttle.
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Iraq vet and back home for good! 95 F250 SC 7.3PSD 4x4 84 Bronco II project truck will be turning 37's
when im done with it.
NApa Filter is OK. I cleaned the screen with a Q tip soaked in carb cleaner. You might need a mirror to see it . It is inside the fuel filter assembly so you have to remove the filter to access it. It is on the other side of the FPR . There is a schreader valve on the filterbowl assembly at about 3 o'clock looking in the plan view. Pressure should be 50-60 @ WOT . If it is shimmed could be as high as 70 . Cranking it should be around 20-30 IIRC.
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95 E350 PSD HD Cargo , BB shim , E4OD , B&M aluminium Trans pan , HD cooler , Cat sleeps with the fishes , 3:55 D70FF, Michelin LTX " E " ,Not installed yet DP flashed PCM (60 Tow )Autometer Triple Pillar Guage pod , New Injector O-rings /IPR /lift pump / filterbowl @ 235K , Timbrens SES kit
1977 F350 Dually Dump , 460 , 429 POLICE heads , 4:56 D70FF, Edelbrock Intake , Holley 850 dbl pmper ,MSD IGN , Custom HiPo C-6 Trans , Dual Exhausts , Bridgestone "E" Tires
1983 KZ1000R , Yoshimura Stage I
1982 KZ1000 , 1045 Wiseco , Turbo ready
1990 KX500
It should be at least 55-60 at idle. If it isn't your looking at a fuel pump.
You should test the PSI of the HPOP as well. You could have a cut o-ring that is bleeding off high pressure oil not allowing the injectors to fire right. I had that problem once.
Any check engine lights?
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1996 F-250 extended cab long box five speed. Home made Tymar, 203 Stat, 60 gal in bed fuel cell, 315/75's, no muffler, ebpv welded open 3" to 3" DP, Babies. 290K, still chugging, and still smoking when cold.
UPDATED 1/1/09 Replace so far. 1 LUK flywheel+clutch, 2 thermostats, 2 set of brakes, 1 set of calipers, 5 CPS, 3 sets of tires, 2 Transfer pumps, 1 Injector modual, 1 Computer, 2 Alt, 2 sets of batteries, 1 Water pump, 6 Belts, 1 PS hose, 2 Sets ball joints, 2 set u-joints, 2 carrier bearing, 2 Speed sensors, 1 oil pres sender, 1 temp sender, 4 sets of e-break cables, 1 front fuel tank, 2 rear fuel tanks, 2 set of glow plugs, 7 Glow plug relays, Oil galley o-rings, Turbo pedistal o-rings, EBPV o-rings, 3 sets of Injector O-rings, 1 Vac-pump, 1 new carpet, 1 total paint job.Total $$$ in repairs v/s miles driven = 4.6 cents per mile. Add fuel to that it jumps to 16.5 cents per mile over the life of the truck.
I am having the same problem. Sometimes when I start the truck it has a real heavy lope to it. I was told it could be anything from dirty oil, clogged fuel filter to a fatigued motor. Let us know if you figure it out.
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97 F250 powerstroke Regular cab longbed 4x4, Dana 60 sas finally in
Supercrap programmer, tymar intake, 3 in. downpipe, 6 in stacks, pyro-boost-trans cobalt gauges
In the garage- h2e turbo, 7.3 intercooler, SD intake plenums, terminator pump, studs, hi rev springs, need injectors, dp tuner F5
lol problem solved you need more air in your tires!
funny!
Changed the fuel filter last night, cleaned out the regulator screen with a q-tip and carb cleaner. There was a little bit of sludge that came off of the screen but not much. The filter was black and slimy.
Truck rev's up to 3200 fine.
Drove it last night and didnt notice much of a difference.
I am going to check the fuel pressure this weekend hopefully.
What is the pressure of the HPOP supposed to be? Is there an easy to check this like the fuel pressure?
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Warsaw, IN
95 F250 PSD, AT
All Stock
173,000
Last edited by white84monte : 10-17-2008 at 09:01 AM.
I would be buying the Injector O-rings soon so when one of them goes you will have the parts to repair them. The "black slimy" filter is not a good thing . . . It could mean your O-rings are worn. When I did mine , I had one dusted but they were all in rough shape. I can't believe how the thing ran as well as it did. You probably have low Fuel pressure. Did you check the Exhaust up-pipes for soot deposits? What kind of boost are you making ?
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95 E350 PSD HD Cargo , BB shim , E4OD , B&M aluminium Trans pan , HD cooler , Cat sleeps with the fishes , 3:55 D70FF, Michelin LTX " E " ,Not installed yet DP flashed PCM (60 Tow )Autometer Triple Pillar Guage pod , New Injector O-rings /IPR /lift pump / filterbowl @ 235K , Timbrens SES kit
1977 F350 Dually Dump , 460 , 429 POLICE heads , 4:56 D70FF, Edelbrock Intake , Holley 850 dbl pmper ,MSD IGN , Custom HiPo C-6 Trans , Dual Exhausts , Bridgestone "E" Tires
1983 KZ1000R , Yoshimura Stage I
1982 KZ1000 , 1045 Wiseco , Turbo ready
1990 KX500
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95 F250 SC 7.3PSD 4x4
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