misfire/spitting and sputtering
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Senior User
Joined: Feb 2009
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From: Duanesburg, NY
misfire/spitting and sputtering
<HR style="BACKGROUND-COLOR: #d1d1e1; COLOR: #d1d1e1" SIZE=1 itxtvisited="1"> <!-- / icon and title --><!-- message -->
<!-- In 1st Post Ad --><TABLE border=0 width="100%" itxtvisited="1"><TBODY itxtvisited="1"><TR itxtvisited="1"><TD vAlign=top width="100%" itxtvisited="1">hi im new to owning a powerstroke i have owned a 7.3 idit before but never a powerstroke. i just bought the rig yesturday for 2k a 1995 <NOBR style="FONT-FAMILY: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; COLOR: darkblue; FONT-WEIGHT: bold" id=itxt_nobr_2_0>f-350
</NOBR> dualie 2wd 5sp 4dr longbed with 281k on the odometer. when i take off in 1st it starts to spit and sputter around 2-3k rpm and it also does it in 2nd but it doesnt seem to do it in 3rd 4th or 5th/od check engine light is not on...i took it to school today (University of Northwestern Ohio) to see if there are any codes and there were no code present and i did an injector buzz test and a contribution test with a snap-on solus and all passed. i was just wondering if anybody had any thoughts....i replaced the fuel filter cause i thought that was the issue(it was black!) but it still does it any help would be greatly appreciated.
thanks
p.s. i dont know if this would affect it but the exhaust ends at the end of the down pipe it needs a new exhaust system</TD></TR></TBODY></TABLE>
<!-- In 1st Post Ad --><TABLE border=0 width="100%" itxtvisited="1"><TBODY itxtvisited="1"><TR itxtvisited="1"><TD vAlign=top width="100%" itxtvisited="1">hi im new to owning a powerstroke i have owned a 7.3 idit before but never a powerstroke. i just bought the rig yesturday for 2k a 1995 <NOBR style="FONT-FAMILY: verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif; COLOR: darkblue; FONT-WEIGHT: bold" id=itxt_nobr_2_0>f-350
</NOBR> dualie 2wd 5sp 4dr longbed with 281k on the odometer. when i take off in 1st it starts to spit and sputter around 2-3k rpm and it also does it in 2nd but it doesnt seem to do it in 3rd 4th or 5th/od check engine light is not on...i took it to school today (University of Northwestern Ohio) to see if there are any codes and there were no code present and i did an injector buzz test and a contribution test with a snap-on solus and all passed. i was just wondering if anybody had any thoughts....i replaced the fuel filter cause i thought that was the issue(it was black!) but it still does it any help would be greatly appreciated.thanks
p.s. i dont know if this would affect it but the exhaust ends at the end of the down pipe it needs a new exhaust system</TD></TR></TBODY></TABLE>
Hotshot
Joined: Jul 2008
Posts: 11,231
Likes: 130
From: Thomasville, GA
When you changed the fuel filter did you clean the FPR screen? There's a little hole inside the filter housing on the driver side, take the cotton off a q-tip and clean the junk off that little screen.
Also get a cheap tire gauge that goes up to at least 80psi and check fuel pressure at idle from the schrader valve on the driver side outside of the fuel filter housing (brass doohickey aka FPR) and then post what PSI you get.
Also, when was last oil change?
Also get a cheap tire gauge that goes up to at least 80psi and check fuel pressure at idle from the schrader valve on the driver side outside of the fuel filter housing (brass doohickey aka FPR) and then post what PSI you get.
Also, when was last oil change?
Thread Starter
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Senior User
Joined: Feb 2009
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From: Duanesburg, NY
thanks for the reply...i just changed the oil yesturday and just replaced the tranny fluid today with synthetic merc. 5 and found out that the input shaft seal is shot....but thats a whole other story....i will see if i can get a tire gauge and no i didn't clean the fpr i will tonight though ill post what i got as soon as i can
Thread Starter
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Senior User
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From: Duanesburg, NY
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Hotshot
Joined: Jul 2008
Posts: 11,231
Likes: 130
From: Thomasville, GA
Just FYI you don't have to "cycle" the glowplugs. They stay on even after the Wait to Start light goes out, and stay on for about 2 minutes or so. You can watch your volt gauge as it stays down at first and then when it pops back up is when the glowplugs turn off.
Might be time to get your injectors rebuilt... 281k is a lot of miles for stock injectors.
Might be time to get your injectors rebuilt... 281k is a lot of miles for stock injectors.
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Senior User
Joined: Feb 2009
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From: Duanesburg, NY
cleaned the fpr screen and it is now clean but it still misfires. i also realized today that it does misfire when in the other gears just not as bad. and also it wasnt just in the 2-3k rpm range it was from 1-3k