94 Isuzu mu running rough

[SlizardWizard]

So I replaced the washers on my injectors as there was a leak and found some damage to the old washers, no problem there.

Gave them a bit of a clean up and refitted them, got them lined up with the markers on the engine. It starts but sounds like it's running on 3 cylinders. Any advice? (Leak is gone though so that's one positive)

Or any info on the injectors to make sure i have them setup right?

Cheers

[geeves]

This is a little messy and you should wear leather gloves. Crack the fuel rail nut on each injector to find which one isnt firing. When you do the diesel squirts out under pressure but doesnt get injected.
I trust it isnt just when cold. Bad glow plugs can also cause this. My 3.1 also runs rough as guts for the first minute or so after starting

[SlizardWizard]

I'll give it a shot, yeah gave it a good while to warm up and still no better. Wasn't doing it before hand.

[andy120]

Funny, i have the exact same problem. even with the glow plug getting 12v for 30 odd seconds after start. pulled the front off it and checked timing 3 times, plus checking the pump swash plate timing. still farts around for a couple of minutes.

[SlizardWizard]

So I ended up getting a replacement set of injectors. All reassembled (minus forgetting a clip on a coolant hose whoops) she starts and runs flawlessly again.

[andy120]

How do you get the hard return pipe off without breaking it?

[andy120]

i have replaced the leak down washers on a 2nd set of injectors. will see if that improves the situation.

[andy120]

Turns out, the relay earths on both glow and afterglow were bad. Gave them a new earth and they work again.

[andy120]

Did same thing, new grounds, runs perfect.