Injector issues?

[JD3020]

Blowby is above average, but i haven't checked it since i swapped injectors and everything else. Voltage is 14+

Put another 60 miles on it today, and of course the last 5 miles home i don't think i even saw a puff out of. Backed it in the driveway and let it idle while i unhooked the trailer. Smoke free the entire time until i moved it up to park it. LOL

 

[lincolnlocker]

take the ccv dog house off and clean it out.

live life full throttle

 

[diamondds]

Hello new to the forum . PLEASE HELP have 01 f-550 7.3 232567miles 6 speed turbo has miss until 1.5-2 RPMS no sel-light used snap-on scanner ran contribution test # 1 failed replaced with new still miss now service soon light ran contrub-test again passed now failed buzz test so took back out replaced with another new one figured that one bad samething put new uvch harness and Idm same thing still light on buzz test all sound strong but #1&#8 hear little tapping to going to pull #1 pushrod today .Motor runs strong some black smoke when punched p1316&p1271 thank you in advance for your HELP

 

[Maryland dieselnick]

Hi and welcome to the forum.
That mileage is a point where injectors often need to be replaced.
If you have a weak buzz you can swap that injector to another cylinder and see if it follows that injector.
Did you clear the cylinder of fluids after installing that injector before you started the engine?
Take a look at the underside of the engine harness as it lays on driver's side valve cover. Make sure you do not have chaffed wires underneath.

 

[dsberman94]

It takes quite a bit of hard driving to push the air out of the injector and the oil through like it should.

 

[diamondds]

thank you for your input will look under drivers side did not know that uvch could hurt #1will #8 mess up #1 they both sound dull rest sound loudoh by the way the all of the injectors are onlyabout 8-6 months old

 

[Maryland dieselnick]

Yeah check under the harness where it lays on top of driver's side valve cover for chaffing.

You did not answer how you cleared the cylinders of fluid after installing injectors.

I would ohm both 1 and 8 injectors starting at the under valve cover harness. The center pin is the common to all injectors on that bank. The two front and rear are glow plugs the others are the respective injector pins.

These are not Pensacola injectors are they? 1 and 8 are new? You did or did not try move dull sounding to different cylinders to see if the dull buzz followed the injector? The 42 pin connector right there where the harness lays on driver's side valve cover and sometimes chafes, can have corrosion on the pins. Disconnect with 10 mm. Lift harness look under for chaffing and check pins in connector for corrosion.
I just moved to a new house and shop. I'm not completely unpacked so my pwr. train book is awol, so I can not look up those codes.

 

[diamondds]

I pulled #1 out turned motor over by hand to try and clear cylinder put new one in turned over sounded like may have tried to hydro lock not sure but started right up after built up oil pressure did not replace #8 just #1 took 42 pin connector apart didn't see bad wire ohm from there to vc got 3.0 didn't move injector to see if follows don't understand how #1 failed cont. test no sel light replaced it now light all time before i replaced it all pass buzz. oh when I run test with scanner light goes off cut motor off start back light on. no pens.injector

 

[Jomax]

That "new" injector could be bad. Where did you buy it from?

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[diamondds]

I thought same thing I have replaced #1 twice samething getting 1316 & 1271 inject from o'reilys

 

[diamondds]

look like may have some fuel in oil thinking about pulling 3-7 tapping coming from passenger side too

 

[Arisley]

I pulled #1 out turned motor over by hand to try and clear cylinder put new one in turned over sounded like may have tried to hydro lock not sure but started right up after built up oil pressure did not replace #8 just #1 took 42 pin connector apart didn't see bad wire ohm from there to vc got 3.0 didn't move injector to see if follows don't understand how #1 failed cont. test no sel light replaced it now light all time before i replaced it all pass buzz. oh when I run test with scanner light goes off cut motor off start back light on. no pens.injector

You barred the motor over with the injector out. All that does is put more oil in the cylinder, not clear the cylinder. After replacing the injector, remove the glow plug, bar engine over two full revolutions. Let starter turn motor over for a few revolutions. Replace glow plug, put motor together and start motor.

 

[lincolnlocker]

You barred the motor over with the injector out. All that does is put more oil in the cylinder, not clear the cylinder. After replacing the injector, remove the glow plug, bar engine over two full revolutions. Let starter turn motor over for a few revolutions. Replace glow plug, put motor together and start motor.

to add to andy's post, make sure 42 pin connector is not connected before you roll motor over with starter.

live life full throttle

 

[Jomax]

I thought same thing I have replaced #1 twice samething getting 1316 & 1271 inject from o'reilys

There's your possible issue. I wouldn't trust injectors from oriellys at all...

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[diamondds]

getting ready to do comp. test but come to see yall thoughts my snap on gauge only goes up to 300 already started motor that's how I got the codes or should I just simply pull # 1injector back out and start all over . like I said in my earlier post it is my 2nd new injector I don't think both of them are bad

 

[Arisley]

Gauge isn't big enough.

 

[diamondds]

it actually went to 400 if you count where need is thanks for all input so should I or shouldn't I pull # 1 start all over this time crank motor without glowplug

 

[diamondds]

it went to 400 if you count where needle is so pull or not #1 and start all over this time pull glow plug.read on another forum someone put some kind of dieletric grease on 42 pin and it went away