Blow by past injector body

DMAX497

New member
Sep 27, 2012
398
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Utah
Was racing a built motor Subaru last night... After the race my truck started a small tick. Drive to where we park and it was very loud. Number 1 injector was wet on the outside. And you can feel the compression blowing past. I don't know what would have cause this? Haven't had a problem for 2,000 miles since injector install with new coppers.

Could the hold down be bent?

Blew the copper washer out?

Blew the o ring?

Just wasn't seated?

I won't know until tomorrow when I year into it...
 

x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
1
38
34
Lexington, Ky
I hope your copper ain't broke in 2 or even 3 pieces. I've had them like that before and it's sketchy removing them where they could fall into the cylinder. Big q tip with grease packed on it, or a pick is your friend depending how intact it is.
 

dracing70

SH--- GETTING EXPENSIVE!
Jun 12, 2007
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mantua, oh
Sure do Chavis!!! :thumb:



How can I tell or "why" would I need to pull the head?

Sometimes the nozzle swells and won't come out. But it prob. Will I lifted three last year. Billet hold downs are a must. When mine did it ruined two of the three nozzles and I shut it down instantly in each case. It's a craps shoot.
 

x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
1
38
34
Lexington, Ky
Sometimes the nozzle swells and won't come out. But it prob. Will I lifted three last year. Billet hold downs are a must. When mine did it ruined two of the three nozzles and I shut it down instantly in each case. It's a craps shoot.

I welded a lugnut to a cv style impact swivel, then welded a adapter to the other half. Screwed that on to a slid bar hammer. Screws onto injector fuel fitting. Works well!
 

DMAX497

New member
Sep 27, 2012
398
0
0
Utah
Hold down bolt was loose... Spin with my finger loose. Had to go gone to get my crows feet for the connector line. Then I will pull out and inspect.