Power problem with 4BD1T

[Dave_S]

Hi All,

I'm looking at maybe buying a County with a 4BD1T fitted. The car is a long way from perfect but it does have it good points. The biggest worry I have is that it seems to run rough and have no power on slight throttle openings. You really have to give the throttle a good shove before it seems to clear its throat and start making some power and running smoothly.

It is not the throttle cable - it does the same thing when you operate the lever in the engine bay. I've had a few 4BD1/4BD1T powered cars and all have been pretty responsive from low revs - nothing like this.

The owner reckons it is just the pump timing, or the springs that govern the advance in the pump. I'm not convinced and have a feeling it may not be cheap to fix. The injectors are new and there are no obvious diesel or air leaks. The owner seems to think it has always been like this, so it's not something that has just started happening.

Has anyone else had this problem or seen it before? If so, what was it and what sort of dollars would I be up for to fix it?

Cheers, Dave.

[THE 109]

If it's a sus injector pump you could spend up to $2000 depending on what needs replacing,try the cheap and easy things first like the timing.
Cheers Eric

[Blknight.aus]

it might be the auto advance springs having given up or that the timing was never setup correctly in the first place.


it could be as simple as the injector pump has a weak spring or a sticking plunger barrel thats slowing the rack. does it run on at all?

buy it and fix it, the 4bd1 injector pumps a doddle to overhauls and setup.

[Dave_S]

it might be the auto advance springs having given up or that the timing was never setup correctly in the first place.


it could be as simple as the injector pump has a weak spring or a sticking plunger barrel thats slowing the rack. does it run on at all?

buy it and fix it, the 4bd1 injector pumps a doddle to overhauls and setup.

Thanks for that. It doesn't run on at all. As for the pump being a "doddle" to overhaul and set up, maybe for you but I've never tried:D I reckon I'd have to give it to a professional shop to fix and that's what scares me. I've never come out of one of those places without having to donate a kidney.

[Blknight.aus]

If you can read you can do it.

If I lent you my manual so long as you know which end of the spanner or screwdriver to hold onto and which side goes on the fitting you can do it.

Failing that buy it and since its the same engine as the ADF uses and we have a new appy coming I can see about lining up having it done as a work history for his comp log.

or I can lend you a hand.

it might not cost you a kidney. Your liver on the other hand.........

[lambrover]

dave I don't think it is wise telling people to pull there pumps apart.

you could just get away with opening it up and cleaning it maybe but rebuilding a fuel pump with out putting it on the test bench would be stupid.

Just my opinion though

[Blknight.aus]

all of which is covered in the manual......

and you dont really need a test bench to do the in line pumps just a set of graduated test tubes and some patients.

[Dave_S]

No longer my problem - someone else bought it last night. Looks like I'll just have to keep working on the one I've got :D

[headswell]

Hey, stumbled across your post. I bought the Landrover Sat night understanding the lack of acceleration to be 'normal' like the previous owner promised me. If it is not I may not go through with the sale. If anyone has any advice that would be most appreciated.

Note: This will be my first Landrover. I bought it because I need a troopcarrier and it seems heaps better than a toyota....

[Blknight.aus]

Ive got the next 3 days off, get it for a test drive and bring it around.

I'll get you some ammo to haggle the cost down.

[Dougal]

If it's a factory turbo, check if it has the boost compensator on the back of the IP. If it does, blow down the line and check it's still air-tight.

Only the early engines have boost compensators.

[isuzurover]

If it's a factory turbo, check if it has the boost compensator on the back of the IP. If it does, blow down the line and check it's still air-tight.

Only the early engines have boost compensators.

It is an ex-truck 4BD1T AFAIK so it may have.

[Blknight.aus]

its an ex truck engine. with the compensator and performs exactly as is should.

its in better nick than some of the engines in the perenties on amberly

needs a very minor service to sort out the valve clearances and some hose rubbing issues and theres the slightest bit of chatter on the front bearing plate in the lt95. Its probabley only got 20 maybe 25 years of use in it as a touring vehicle the overdrive will give up first but excluding that it'll probabley make 1M Km with good servicing.

[jerryd]

Just twigged which vehicle is in question here, I was speaking to Peter earlier who informed me that it has a new home out west ;) I wasn't aware that it had any issues.

Anybody on here purchased it ??

[Blknight.aus]

yes, someone on here has purchased it, and if he hasnt by now then Im going to.

[dobbo]

The best thing I did with mine (Lokka's idea) was give it a decent service and put a fuel conditioner through the system, over a few tanks worth. It cleaned out a lot of crap and gave me a bit more umph

[1103.9TDI]

Didn't happen without PICS;).