Injection Pump

[capslayer]

I've been waiting for my van now for 29 days, 17 hours and 50 minutes. It'll be here in 3 days, I should get it in 10 or 15 days.

I went in to Japanoid to discuss the likelihood of an injection pump leak problem. It seems that it's a very common issue, especially with vehicles with low kilometers. I was wondering if these things will leak immediately, or is it something that is more likely to happen after a few months of driving. The guys at the shop told me that if there are any leaks, they will rebuild the pump there, and the problem isn't as frequent as I thought it might be. They estimated that maybe, 1 in 10 leak.
Mine will have 74,000km. Has anyone had a lower mileage van, that is leak free? I realize things like this can happen at any time. I actually hope that mine will leak on the way to inspection, that way I get it dealt with immediately.

Capslayer

[robinimpey]

My 1991 had 63000 kms when I got it a year ago and I just resealed the pump a few weeks ago because it was leaking out of the seal on the main shaft. Seals may have been bad inside the pump and I wouldn't have known. I did not do a full rebuild as my van was running good and has low kms on it. I'm just about to hit 80,000 kms. Not sure what others have expierenced, but that's my experience.

[The Pinkfingers]

Got mine from Japanoid with 63,000 km on it as well. Pump is fine. That being said, I don't know what the symptoms of a leaky pump are, so I'm assuming it's fine. The van runs well.

[Schwa]

Got mine at 76,000km and I'm at 102,000km with over a year of driving, no pump leak.

[jrman]

Bought mine May 2007 - IP just started leaking two weeks ago. Making a bit of a mess down there, but only a few drops hitting the ground every time I park (doesn't leak when not running of course). Leaving her with Mardy (Mardydelica) for a week while away on business this month and he's going to arrange the full IP rebuild. Had 93,000km when purchased, now 129,000. I'm sure I could get away with the seal replacement only, but have been taking the approach of going the "full pull" on problems as they have come up to avoid future problems down the road. Fully intend on driving this deli till the wheels fall off so it's an investment I'm willing to make.
Will post my opinion on the result when done.

[konadog]

I'm sure I could get away with the seal replacement only, but have been taking the approach of going the "full pull" on problems as they have come up to avoid future problems down the road. Fully intend on driving this deli till the wheels fall off so it's an investment I'm willing to make.

I like your style jrman. Our bus came with 64,000 clicks and is at 77+ now. No IP issues...yet, but when they do arise, like you, we will be doing the full-meal-deal fix, for sure. Same with any other problems. Last one was a leaky front brake line - could have replaced just the leaky side, but did both anyway. We want our bus to last as looooong as possible too

[JMK]

My Deli has been here since last January, no leaks as yet but I'm spending lots of $$ on additives. (See the other post about Industrial Diesel Fuel and it not being LSD).

On the other hand, brought in a Land Cuiser at the same time and the IP started to leak on about the third tank of Canadian LSD!

[maxpowers]

im afraid to post lest it start leaking in the morning!
imported at 74000 3yrs 50000kms later no leaks
nothing added to fuel

[jessef]

Mine 1st 4D56 IP wasn't leaking but the sleeve was sticking internally and was affecting the RPM's and mileage.

Had a good diesel mechanic try everything and dumped a lot of $'s and time trying to find the problem (was getting really low MPG and some black smoke).

He took it to a specialized injection place and they did their magic on it. Once that was done, all was good.

Lesson learned.

It doesn't take a visual leak to realize there can be internal IP problems.

Glad to hear that most of you guys have no leaks and no poor IP symptoms.

[rps13]

Picked my Deli up a month ago. No leaks then. About 2 weeks after a leak started. Just got it re-sealed the other day and it's great now. Has 106,000km'

[Green1]

well, I've been fighting with an air leak in to my diesel system for a while now, we've pretty much eliminated anything else as a possibility, so I've asked my mechanic to get the injection pump looked at. We'll see how it goes...

[DelicaMark]

Hey Green1! What are the symptoms that you are having for an air leak in the diesel system? Do you actually have diesel leaking out from somewhere or is it more subtle than that. More specifically, is it possible to have an air leak and not have any evidence of leaking diesel?

I am wondering if an air leak could be my problem with cold starts up on the ski hill. I think I have pretty much tried everything else for cold start issues. But when I go to start my van up after a couple of days on the ski hill it is almost like the van is out of fuel. My thinking is that once I finally get fuel to the pump the glow plugs have cooled enough that the engine won't turn over, even if I re-glow plug.

Anyway don't want to turn this thread into a cold starting thread...mostly wondering about what people think about having an air leak without having obvious diesel leaking about.

Thanks!
-Mark

[jessef]

More specifically, is it possible to have an air leak and not have any evidence of leaking diesel?

Yes.

I had my return line on my Pajero leak air.

It was rusted and had a bunch of pin holes in it. Diesel did not weap out but air did.

Replacing the line and new plugs cured the white smoke.

[Green1]

Hey Green1! What are the symptoms that you are having for an air leak in the diesel system? Do you actually have diesel leaking out from somewhere or is it more subtle than that. More specifically, is it possible to have an air leak and not have any evidence of leaking diesel?

No diesel is leaking out, however air is leaking in, but very slowly, if the van sits for 8-10 hours it will still start, if it sits for 24 hours it will start with great difficulty, if it sits for longer you can crank until the batteries are dead but it won't start. if however you prime it using the manual prime pump on top of the fuel filter it will start no matter how long it's been sitting (that pump gets rid of the air in the lines)

To troubleshoot to see if your problem is air in the lines (though this won't tell you WHERE the air is getting in) loosen the bolt on the side of the fuel filter and pump the piece on the top until only diesel and not air is coming out around the bolt, then tighten the bolt and try to start. If this solves your starting problem than you know that your problem is air in the lines somewhere. If this does not solve your problem, then you are back to troubleshooting other "cold starting" issues.

It's a pain to have to prime it every time, however it will work as a temporary fix until you can track down where the leak is (it could be fuel lines, the fuel pickup, the filter, the injection pump, or any connection in between.)

[JMK]

If you end up getting the IP rebuilt would be interesting to find out where. I found GCL to be top notch, but they certainly aren't cheap, but again none really are. (As noted in the previous posts I paid $500.00 for rebuilt injectors, and still need to fork out $200.00 for dynamic timing).