Another cracked piston

Rmartin-97 · Dec 8, 2013

78f100 said:
I wouldn't put a lot of faith in a compression test like you did. You need to use a actual compression tester on all cylinders. I'm not sure as I don't have the same scanner as you but I can't figure out how it can do a compression test. It must be some sort of a contribution test and a bad injector would cause it to read wrong.
Harbor freight has a decent diesel compression tester.

Oh ok.

Rmartin-97 · Dec 10, 2013

Mike@MPD said:
Mine filled up with fuel when that happened

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Wen the rail pressure sensor went bad wat did it do leak in the head?

Mike@MPD · Dec 10, 2013

Yup

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Rmartin-97 · Dec 10, 2013

Mike@MPD said:
Yup

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Should I see it leakin if I pull the valve cover and turn the key on?

Mike@MPD · Dec 10, 2013

Yea you should

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Mike@MPD · Dec 10, 2013

The little oring on mine was warped. I'll see if I can find a picture

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Mike@MPD · Dec 10, 2013

This how mine came out

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Rmartin-97 · Dec 10, 2013

Mike@MPD said:
This how mine came out

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Ok I'll look at that tomorrow. Thanks man

Mike@MPD · Dec 10, 2013

No problem man

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Rmartin-97 · Dec 11, 2013

Got both valve covers off tonight. No visible leaks. About to buy a injector and put it in #8 and a new rail pressure sensor and see what happens.

webb06 · Dec 11, 2013

Rmartin-97 said:
Got both valve covers off tonight. No visible leaks. About to buy a injector and put it in #8 and a new rail pressure sensor and see what happens.

Did you ever do a compression check on #8? What are the symptoms now? Just fuel in the oil? No miss now?

Rmartin-97 · Dec 11, 2013

webb06 said:
Did you ever do a compression check on #8? What are the symptoms now? Just fuel in the oil? No miss now?

Haven't got to do compression test yet. It has fuel in the oil and no miss runs fine.

webb06 · Dec 11, 2013

Did you check for leaks with it running?

Rmartin-97 · Dec 11, 2013

webb06 said:
Did you check for leaks with it running?

Can I run it without valve covers on it.

jdgleason · Dec 11, 2013

powerstroked08 · Dec 11, 2013

yes you can.

webb06 · Dec 11, 2013

Rmartin-97 said:
Can I run it without valve covers on it.

You'll have to hook the fuel cooler back up. And probably be smart to put the coolant reservoir back in.

Other than that you should be fine.

powerstroked08 · Dec 11, 2013

Thats the only way to see if its leaking. At least then you will have 5k psi to help find the leak.

Rmartin-97 · Dec 11, 2013

It almost has to be either a injector or maybe my pump started leaking. Only two things left.

webb06 · Dec 11, 2013

powerstroked08 said:
Thats the only way to see if its leaking. At least then you will have 5k psi to help find the leak.

Yep.

Only way it can be an injector is if its leaking from the jumper line or putting way to much fuel in the cylinder and its gettin passed the rings (which would cause excessive smoke)

Get it started with the VC's off and look it over real good