Check Engine Light (transmission codes)

[DavidC]

What does your meter read with the meter leads seperated and not touching themselves. On a fluke 0 is a direct connection with no resistance. Also an open wire will show OL on a fluke. Leads touching each other will show 0 or the lead resistance which should be very low.

 

[Sneaklylilpetey]

What does your meter read with the meter leads seperated and not touching themselves. On a fluke 0 is a direct connection with no resistance. Also an open wire will show OL on a fluke. Leads touching each other will show 0 or the lead resistance which should be very low.

Meter rears 0.L when leads are not touching. If I touch them together I get 00.0

 

[Sneaklylilpetey]

When I test the injector harness I get 00.0 on all wires.
All injector solenoids give me a reading if 00.3 to 00.4

 

[DavidC]

Meter rears 0.L when leads are not touching. If I touch them together I get 00.0

So your prior test of 0 shows no problem. If you keep a good connection and wiggle the wire and it changes the wire could be broken under the insulation. The key to that is making sure the leads stay connected to the wire. If the wire is damaged it will go to high resistance or OL.

 

[DavidC]

When I test the injector harness I get 00.0 on all wires.
All injector solenoids give me a reading if 00.3 to 00.4

Electrically sounds good to me but now your down to the mechanical part of the injector.

 

[cerberusiam]

Except he is getting a cylinder misfire DTC which is electrical associated. Possible the injector is bad out of the box just not likely.

Next step is swap say #1 and #5 and see if the problem follows the injector or stays at #5.

If you have no puffing blow by the piston is in 1 piece. However and exhaust valve may be torched and\or tuliped. Do the valve heights look good on #5?

 

[DavidC]

I am by no means an expert on these things. Just because a coil ohms ok does not mean it is functioning as designed it just means the coil winding is intact from one side to the other. I think they make inductive testers for that although I have not used one. Your getting into a magnetic section that moves a pintle type mechanism to open a port so the high pressure operates the injector. I wonder how it determines a misfire, voltage, amperage ?. You are right swapping injectors without the proper test equipt. is about the only way to verify or eliminate.

 

[cerberusiam]

The only real check you can do on a solenoid is resistance at rest and open\shorted. Without some expensive machinery you really cannot even see how they are operating.

If the code is still showing there is a problem in the electrical circuit somewhere, that is all that one can really tell without some specific tests on the solenoid as installed and knowing what the results should be.

 

[Sneaklylilpetey]

Compression test kit comes today. I'll post results when done with that

 

[Sneaklylilpetey]

Well I found the problem.. #5 compression is 0... All other cylinders are just shy of 500.
Very odd that I'm not getting any compression out of #5....

Spoke too soon. #6 cylinder is 350

 

[cerberusiam]

If you are not seeing any puffing out the oil fill when it is running, an dit would MAJOR train puffing, then you have a burnt\broken valve. I think oyu can safely pull the head at this point and assess damage without getting too far ahead of the symptoms.

 

[DavidC]

Well I found the problem.. #5 compression is 0... All other cylinders are just shy of 500.
Very odd that I'm not getting any compression out of #5....

That's where a leak down tester works but requires an air compressor. You can hear or feel where the air is going. Of course the cylinder should be at TDC with both valves closed. Maybe you have a valve problem ?.

 

[Sneaklylilpetey]

If you are not seeing any puffing out the oil fill when it is running, an dit would MAJOR train puffing, then you have a burnt\broken valve. I think oyu can safely pull the head at this point and assess damage without getting too far ahead of the symptoms.

I spoke too soon. #6 is 350...
Either way I'm pulling the head to see the damages

 

[Sneaklylilpetey]

Drum Roll.................. Busted exhaust valve and completely fried piston.. How wonderful!

 

[cerberusiam]

Didn't burn a hole thru it so didn't get much blow but that's a paper weight now. If it hasn't scored the cylinder too bad it might clean up.

How does #6 look?

 

[Sneaklylilpetey]

#6 looks good. There's lot of build up on the walls of #5.

Contacting the build company, Engine has a warranty on it so let's see how well that works out

 

[cerberusiam]

Wonder why the compression was low on it, did it blow the gasket between 5 and 6?

Hope they honor the warranty with a failed injector. If they put them in they should.

 

[Sneaklylilpetey]

Just spoke with Injectorsdirect and they're saying there's no way an over fueling injector could've caused that much damage to the piston and valve.

 

[cerberusiam]

LOL, that sounds about right. Ain't nothing but fuel in there is gonna melt a piston.

 

[Sneaklylilpetey]

Is it possible to drop the oil pan with the block still in?
I'm not doing anything though until I hear from the build company
I guess the big question is, is there too much damage to the walls to be honed out and a new piston dropped in