New 300tdi engine

[David Riding]

Just had a new engine put in my defender (new to me). New engine had 53,000 on clock out of 300tdi discovery auto 1998. Problem is new engine feels loads more under powered then old one. Could this be something simple like injector pump or turbo, or something much worse!

[toprotter]

53,000 low for 10yr motor?

Normally the injection pump on disco is set for a bit more omph.

Turbo could be checked with a pressure boost check, check all pipes for cracks leaks

Fuel line/filter blocked or air leak

Low compression in one or more of the cylinders?

Did you drive the disco with engine in /or buy off the floor...

Did you put a new clutch in? as that may be slipping

 

Apart from your hand brake /brakes I cant think of anything else

sorry.....

[josharb87]

collapsed turbo pipes?! (may appear fine on outside)

[Dean Lofthouse]

David.

 

I have just stuck a new one in mine and it wouldn't pull out of the drive up the hill and I had just stuck a new injector pump in which I had just got back from having the settings put to factory set.

 

It turned out to be the power screw on the injector pump needed screwing in 1/4 turn from factory set. It goes like split doggy do now.

 

The power screw is the one at the back of the pump just above the injector pipes. Make a note of where the original position is and screw in no more than 1/4 otherwise you'll end up with smoke, if this doesn't cure it it needs further investigation

[ecolojim]

a 98 300tdi from an auto will have the EDC fuel pump, which IIRC has a load of extra electrical gubbins with it that goes wrong just for fun, and interfaced with the gearbox ecu and cruise control etc.

 

the interesting thing here is discoverys only had more power than defenders in 200tdi trim and only a few hp difference. Im fairly sure the 300tdi's are the same engine (one manifold configuration vs 2 on the 200tdi), except the EDC auto version had even more horsepower than the stock 111 or whatever, to compensate for the inefficiencies of the ZF auto box's viscous coupling

 

Does the engine still have the EDC gear on it? or... more likely has it had a mechanical injection pump fitted to it before fitting to your defender? If so, there are a number of things that can be at fault, primarily timing, worn pump and so on.

 

other considerations being the EGR might be stuck open which is VERY common, simple... remove it.

 

check hoses for delamination etc, but in short, Im with dean, im leaning towards the fuel pump

 

lack of power, and lack of revs can also be lift pump knackered.