2H smoking under load..

If you are stopping at the Gold Coast on the way up, you will get excellent advice fron Off Road World. I've always used them, and find that they are excellent. I have no affiliation nor do I receive kickbacks etc (I wish!!:). There are also many excellent diesel shops in BrizVagas also.
Yep, sounds like unburnt diesel. Points to injectors and pump AFAIK.
Have a great trip.

Hi Christian,

How many k's on the 2H? If less than 200,000, I'd hope the pump is still working OK but the injectors may be getting a bit dodgy. Poor spray patterns can lead to incomplete combustion and black smoke, even if the maximum injection quantity is OK.

I believe 2H injectors can be reconditioned and an exchange set shouldn't be too expensive. Rather than being talked into a full pump rebuild or replacement, I'd first try a set of new/reco injectors to see if that does the trick. It's a pretty easy job to do yourself if mechanically minded and tooled-up.

Also, a previous owner may have 'wound-up' the fuelling to get more performance. Try to see if the pump still has a lead sealed wire on the main fuel adjustment screw. (Pretty sure the 2H has a seal wire but I've not looked at one for a while, so I'll stand corrected if someone knows better.) If no sign of a seal, try small (1/4 turn at most in one go) adjustments to see if this alters the smoke situation. [Can't recall which direction increases and decreases fuel delivery, so if it get worse, go the other way!] If I can find some more specific info I'll post a follow-up.

Ian

Christian

Cheapest first and it would pay to check the air cleaner is clean first off and flow not restricted in any way.

Black means rich mix and it will be either over fuelling or not enough air to the combustion process.

John g

http://www.turboglide.com.au/
02 42 84 7882

Give this mob a ring and get it on a dyno and tuned you wont regret it.

All the best
Eric

I would just add one thing - don't get conned into a injector pump "rebuild" - the pumps on these things last just about forever, well lots longer than the newer rotary pumps fitted to the 1HZ anyway. The pump will still be going strong long after your motor is worn out.

Cheers

Chrich,
I have a 1985 2H that has done 249,000 K'S. Recently my mate done my injectors as there was a little smoke coming from the exhaust and my fuel economy was down markedly.
I watched as he fitted the new nozzles and to see the spray pattern of the new ones was a revelation compared to the old spray or lack of spray pattern. Fuel economy back to normal. He runs a fuel injector pump service in Tully (Q) at Tully Heads. He said to try the new injectors first (after the free flow of air as above is checked). Another problem that can occur is with the capsulated spring on the fuel adjustment screw. The spring gets rusty and sticks. To adjust the fuel, screw anti-clockwise for more and clockwise for less.
Highway Diesel Service at Rocklea in Brisbane.
Labrador Fuel Injection Service.
Tully Diesel Service. (07) 4066 9029 if you want to go that far.
Cheers,
Bros.