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 Nissan Frontier Forums : Problems / Technical
Subject Topic: 2004 3.3 sc misfire Post ReplyPost New Topic
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harrellauto
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Posted: Jun 22 2011 at 11:33am | IP Logged Quote harrellauto

I have a 2004 frontier 3.3 sc with a p0301.   It is a dead misfire. I have changed plugs, wires, cap, rotor, distributor, number 1 injector.  I have run a compression test 170 or real close on all cylinders.  Cylinder leak down test pased.  verified injector pulse and spark to number 1 cylinder.  Vacuum test great.  Pulled intake to check for leaky gaskets.  Visually checked timing belt for marks.  I got spark, fuel and compression.  This truck is driving me nuts.  The wife really wants her truck back.  Pleease help
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frontierguy
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Posted: Jun 22 2011 at 8:46pm | IP Logged Quote frontierguy

By any chance, did you verify injector spray with the rail
removed? My concern is with a possible voltage drop for the
#1 injector, that is why I asked if you verified operation
with the rail removed. Any sign of water intrusion at the
ECU?

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08 Frontier SE KC 4X4 6speed
08 KTM 200 XC-W sold
09 KTM 200 XC-W sold
07 KTM 250 XCF-W sold
06 Altima SL!!
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2011 John Deere X720SE
used 07 KTM 250 XCF-W for trail r
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harrellauto
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Posted: Jun 23 2011 at 7:49am | IP Logged Quote harrellauto

I did not.  I did plug in the old injector while the veh was running and i could feel it pulse.  Water intrusion in ecm;  I will check that right now.
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harrellauto
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Posted: Jun 23 2011 at 8:01am | IP Logged Quote harrellauto

ECM is nice clean dry and secure.  Started up this morning ran great till it heated up then dead mis on cyl 1
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frontierguy
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Posted: Jun 23 2011 at 8:18pm | IP Logged Quote frontierguy

Plug in the old injector while it is skipping and see if it
pulses.

__________________
08 Frontier SE KC 4X4 6speed
08 KTM 200 XC-W sold
09 KTM 200 XC-W sold
07 KTM 250 XCF-W sold
06 Altima SL!!
Nissan Technician 25 + years
2011 John Deere X720SE
used 07 KTM 250 XCF-W for trail r
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Peninsula2010
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Posted: Jun 24 2011 at 1:18am | IP Logged Quote Peninsula2010

I have seen something like this before and it turned out to be a faulty HVL that only showed up when running and caused a misfire on that cylinder.

Compression check was good when turning over.

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harrellauto
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Posted: Jun 24 2011 at 7:09am | IP Logged Quote harrellauto

HVL  ILL bite whats an HVL?
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harrellauto
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Posted: Jun 24 2011 at 9:01am | IP Logged Quote harrellauto

hydraulic valve lifter?
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harrellauto
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Posted: Jun 24 2011 at 6:49pm | IP Logged Quote harrellauto

Did a running compression test while misfire was ocuring.  60 percent of my static at idle and 80 percent when i snap the throttle.  On a GM thats great.  tells me the engine is breathing ok in and out.  IE lifters and valves ok
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frontierguy
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Posted: Jun 27 2011 at 8:57pm | IP Logged Quote frontierguy

harrellauto wrote:
Did a running compression test while
misfire was ocuring. 60 percent of my static at idle and
80 percent when i snap the throttle. On a GM thats great.
tells me the engine is breathing ok in and out. IE lifters
and valves ok

I'm confused on the static and throttle snap, what are you
using to check comp?

__________________
08 Frontier SE KC 4X4 6speed
08 KTM 200 XC-W sold
09 KTM 200 XC-W sold
07 KTM 250 XCF-W sold
06 Altima SL!!
Nissan Technician 25 + years
2011 John Deere X720SE
used 07 KTM 250 XCF-W for trail r
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