2H injector pump

Joined: 15 Jul 2004 Location: Somewhere in NSW

Ok all you guru's......

My truck has been blowing a bit of black smoke for a while, just never had time or $$$ to fix it. It now seems to be getting worse and is quite noticable, even during the daytime it can be clearly seen whilst driving. I wouldn't say I give it to it, but I certainly don't drive like grandma either.

The temp starts to rise a bit when climbing hills on the freeway to a point where I got to back off and coast on the down hill runs to get it to cool back down. I know all the air intake and exhaust is clear and functioning perfectly too.

Now I did have a diesel mechanic mate do my engine rebuild 3yrs ago and I can definitely trust his workmanship. We have triple checked the timing and valve clearances(while hot) and all seems perfect. I also had the injectors and injector pump rebuilt then too by a diesel injector shop costing around the $1500 mark.... had to put a new cam in and a few other bits and pieces as well.

Ever since about 3mths after whole thing was rebuilt and back on the road, I noticed a weeping of oil from a screw on the side of the injector pump. I thought nothing too much of it and just degreased it off every 3-6mths. I'm now wondering if that is where the problem lies???

Can anyone shed some light onto what may be causing:
1. the weeping of oil.
2. the excessive black smoke(I'm gessing over fuelling but no idea on how to adjust.)

Some pics of the oil weep on the side of the injector pump.

And the engine bay...

Joined: 02 Jan 2006 Location: Lara Victoria

Hey brighty, Looks like the gasket between the injector pump housing is leaking oil. Bummer.

The over fueling problem could be either the EDIC motor or the EDIC control relay.
The EDIC motor is the motor that bolts onto the inlet manfold with the rod connected to the injector pump. It has three positions. Off, which pushes the rod towards the front of the car (i think), Run which allows the linkage to 'Float' in the middle and start which pulls the linkage backwards. What mine does sometimes in get stuck in the start position which gives you a full rich scenario.
Several causes,
1. the motor must have a good earth otherwise it can wind itself in try to earth through the wrong circuit. (least likely but have seen it)
2. The contacts in the EDIC motor are worn or dirty. EDIC motor is easily removed, dismantled and cleaned if you have a little 'mechanical nouse'
3. The EDIC control relay (in the drivers kick panel) has poor contact in the mini relays interanally. This can also be dismantled and inspected with a little 'electrical nouse'.
Good luck.
Dan

Joined: 15 Jul 2004 Location: Somewhere in NSW

any more info kids???? Idea

Joined: 20 Jul 2007 Location: Panama

I would start seeking for EGT .. with a pyro, if you see much black smoke and your EGT raising definately a lots fo diesel .. turn it down a bit and test agian until you have it under 1200F all the time ..

Joined: 09 Nov 2004 Location: Lilydale

The oil leaks are present for 2 reasons, either the bolt is not tight or there is no seal behind the bolt head. Behind the cover is a lot of splash oil.

Your smoke problem is either too much fuel or not enough air. Look at all the things that do this, you will fix your problem, start with the easiest first.

Andy

Joined: 15 Jul 2004 Location: Somewhere in NSW

Dzltec wrote:

The oil leaks are present for 2 reasons, either the bolt is not tight or there is no seal behind the bolt head. Behind the cover is a lot of splash oil.

Your smoke problem is either too much fuel or not enough air. Look at all the things that do this, you will fix your problem, start with the easiest first.

Andy

Andy,

I have since not bothered with it until you replied to his as I coulnd't work out the fix!!!

Now, I know the air intake is fine... no blockages and new OE air filter was fitted. Now the seal behind that bolt was fine... but I replaced it anyway... and renewed the gasket behind that inspection plate too.... but still seems to be leaking there for some reason... thats what I still can't work out why!!!! Don't really have the $$$ to be putting it into a workshop for them to "try" to diagnose the problem.... could take for ever and lots of dollars when they aren't fixing the right thing each time.

I have also played with the amount of fuel being delivered from the inj pump..... but when I played with that, sure there was les black somoke but also noticably less power too... and after all the old 2H aint got that much power to start with either!!!

Thats where I'm at with it!!! Rolling Eyes

Joined: 05 Dec 2003 Location: Brisbane Australia

To eliminate the edic as the source of the problem, knock the rod that connects the edic to the pump off, will just pop off at both ends if you hit it upwards.

If its cold, take the rod off after you have started the engine, as without that rod the EDIC wont put the pump into overfuel and starting could be harder.

Also, you wont be able to stop the engine, so either put the rod back on and then turn it off, or just manually stop the engine by pushing on the fuel control lever on the pump. Push it towards the radiator to stop the engine.

If thats not your problem, then, how long since injector rebuild? unfortunately it gets dear from here :(

Joined: 15 Jul 2004 Location: Somewhere in NSW

Shadow wrote:

To eliminate the edic as the source of the problem, knock the rod that connects the edic to the pump off, will just pop off at both ends if you hit it upwards.

If its cold, take the rod off after you have started the engine, as without that rod the EDIC wont put the pump into overfuel and starting could be harder.

Also, you wont be able to stop the engine, so either put the rod back on and then turn it off, or just manually stop the engine by pushing on the fuel control lever on the pump. Push it towards the radiator to stop the engine.

If thats not your problem, then, how long since injector rebuild? unfortunately it gets dear from here :(

I know the EDIC was working properly last time I checked, didn't seem to be getting stuck in the over fuel position.
The Inj pump was rebuilt when the engine was done about 3yrs ago(I know... should have fixed it straight away.. Rolling Eyes

) but by the time I had it rebuilt and then got the engine up and going... it was about 4-5months later.... not like I could take it back and say "hey you didn't do this properly" by then.... NOT going to be happy if I have to get that rebuilt again!!!! cussing

Joined: 22 Oct 2002 Location: Your Mummas House!

is there a crack on it? Confused

Joined: 15 Jul 2004 Location: Somewhere in NSW

bj on roids wrote:

is there a crack on it? Confused

Crack on which part???

Joined: 12 Jan 2008 Location: PERTH, WA

Hiya fellas.
Ive got the same pump in my HJ61 2H with an after market turbo. Can anyone tell me how to tweak down the fuelling abit. Its black smoking etc and ive done all the usual (injectors etc)
Is it that bolt inside the nut above that leaking screw?? If not whats that Very Happy

Everything else is working fine just think they wound it up abit too much when the turbo mod was done.

Joined: 20 Jul 2007 Location: Panama

HJ61 means 12H-T engine .. but in the 2H engine adjust the fuel here ..

Joined: 28 Nov 2006

i second the notion that its cracked,in your first two photos looks like a crack in the body starting from the second last flat head screw,probably not your problem but i'd be checking it out a bit closer if i was you.

Joined: 12 Jan 2008 Location: PERTH, WA

Its defo the 2h engine but with an after market hair dryer on...adjust the fuel where??? Very Happy

Joined: 12 Jan 2008 Location: PERTH, WA

Sorry my fault...the pic didnt load up. Nice one, thanks for that.

Joined: 15 Jul 2004 Location: Somewhere in NSW

davec wrote:

i second the notion that its cracked,in your first two photos looks like a crack in the body starting from the second last flat head screw,probably not your problem but i'd be checking it out a bit closer if i was you.

Back to try again.... the 'crack' you see is actually not a crack... it's the way the inspection plate has been moulded. The oil is actually leaking out of where the phillips/hex head screw covered in oil.

The is also a markedly big drop in oil pressure at idle once the car is at running temp. When driving/or at revs, it will sit at the 1/3 mark from the 'low' oil pressure mark and marginally above the low mark at idle.

Was wondering how this oil is leaking out and is it also linked to the drop in oil pressure??? ie: the oil pressure build up is not high, as it should be, due to this leak in the inj pump??? Is this oil leak allowing the oil pressure to drop so far???

Joined: 18 Sep 2005 Location: Perth Western Australia

Howdy,

I don't think the weep in the plate has anything to do with your black smoke nor your low oil pressure. The IP has diesel, not oil in it. It's an annoying weep, clean it off now and again. think of it as a character mark Cool

Maybe the injectors need cleaning up.
Maybe run some 100% BioDiesel through the ol' girl for a bit to see if that cleans up the injectors. It'll stop the black smoke anyways.

My oil pressure gauge sits on the lower third mark most of the time, only rising to half way when the engine is cold and I've just changed the oil. Not something I worry about - it's been like that for 70k since I bought it.

Tim

Joined: 06 May 2008 Location: Newcastle

Is it diesel or oil leaking out? There is an oil feed to the pump. Infront of the pump at the wet patch is a pipe - that's an oil pipe. check that out for leaks.