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Resolved new motor stage 3 misfire cyl 1 HELP

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442powerstroke

Proven Member
168
6
Jun 6, 2013
sacramento, California
im in need of help please any 1 please help heres my symptoms

it seams to run great till is gets warm then starts to sound like a piece of $hit subaru.
mis fire ? is my guess been working three days stright on it i put new motor in it and now i have this prob.

motor is fully built by me ross pistons manley rods iggly griddel acl race bearings ported head bc titanium evo 8 rockers bc 280 cams aem cam gears, gtx 30r turbo trial wastegate greedy bov dsm v3 gm maf with ecmlink direct cable .going to sd ASAP

with that said i already had everything up in going with old stock motor only thing that is new to set up or underhood is bc 280 cams and knock sensor

what i have tested/ swaped parts since problem

new ngk plugs gaped.028-30 made sure timming right on tbelt two times made sure ignition timing is 5 tdc,did comp test 170+ on all cyl made sure CAS is right not 180 off swap inject risster, killed injectors in dsmlink one by one seams like #1 no diff on or off when i pull plugs cyc1 its spraks when pulled but no drop in engine performance , vac psi good at over 10-15 psi at idle. swamped injector from cyc1 to cyl2 cly1 still no diff when cut.

this seams like a electric problem when its cold it seams to run purfect WTF im stumped anything to look for in dsmlink?
im leaning to bad ecu?
i have also read bad lifters? i have new topline 3g lifters

i can up load a log on v3 too
 

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Was the compression test done hot?
Yes hot n cold so i pulled head off today and found oil intake runner only cyl 1 and intake valves have no carbon on them like other cyl it did not look like valves hit piston at all so im in odd and so is machine shop i dropped head off for them to inspect they told me it must be head if oil was coming from piston rings exhust side would have oil too? B4 i took to shop i sprayed. Wd in intake port none leaked out of valve i will post pics later today any input would sure appreciate
 
Im still going with a guide problem as likely from the description given, there is no visual check for a sticking guide and there is no compression or leak down test that will reveal it, it has to be measured off of the car.
 
The log.2015.06.01-01 file shows that you have a DTC for injector 1. The ECU is seeing a problem with that injector. Once that is triggered it's going to stop firing that injector. The question as you know is why/what is triggering it.

Do you have the locking clips for the injector connectors?
Any cracks in the insulation of the wires?
What impedance injectors are you using? Do you have a spare injector resistor pack?
 
The log.2015.06.01-01 file shows that you have a DTC for injector 1. The ECU is seeing a problem with that injector. Once that is triggered it's going to stop firing that injector. The question as you know is why/what is triggering it.

Do you have the locking clips for the injector connectors?
Any cracks in the insulation of the wires?
What impedance injectors are you using? Do you have a spare injector resistor pack?
yes it got that code from pulling injector clip i and i have installed new quick connect connectors after this prob di you see pic when i pulled off head there was oil in intake port and side of head?
 
did you see pic when i pulled off head there was oil in intake port and side of head?

No, I didn't see them until now. What's that in cyl 1's spark plug location?
Are the other plugs the ones you ran with?
It's clear that cyl 1 hasn't been firing and if the the plug in 3 is untouched, it wasn't firing all the time either.

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So machine shop said head checked out fine said must be bottom end piston rings? If it was bottom end wouldn't oil be in exhust side of manifold. How could a bad oil problem push oil into intake port i swer these guys are morons? I understand how a combustion motor works if bottom end was pusing oil there would be oil intake and exhust
 
So machine shop said head checked out fine said must be bottom end piston rings? If it was bottom end wouldn't oil be in exhust side of manifold. How could a bad oil problem push oil into intake port i swer these guys are morons? I understand how a combustion motor works if bottom end was pusing oil there would be oil intake and exhust

Or it wasn't a build problem. It was a fuel, timing, tune, or ignition problem.
 
That cylinder either has never fired or it has steam cleaned itself. Were you loosing any coolant?
 
Well it would explain the clean cylinder and it would "put the fire out" on the plug and injector. I used to work for a old military mechanic back in the day that would purposely pour a little water down the throat of a carb a little at a time and then gun the heck out of the motor and all kinds of soot would come out of the cylinders....steam cleaning them. Might want to check out the gasket and head and block surfaces since you have it apart. Hate to have it happen again.
 
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