Hi Rusty, gas analyser would be useful for sure. FWIW there is no difference between a 4.2 ECU and a 3.9 ECU I am aware of. Since rebuilding and ragging it around a bit, have you checked/re-torqued the head bolts? It is a bit left field I know but you seem to have tried everything else. Other...

FWIW you need to check the rear calipers too. If the rear right caliper is not working properly and the left one is, you will get a pull to the left. If it was an imbalance on the front calipers you would feel the steering wheel being pulled one way or the other. I don't know the D2 but I have...

OK, sooooo this is a real niggly little one. Mechanically everything seems to be where it needs to be but there is still a misfire and fuel trims not quite right. With Rovergauge, can you see the O2 sensors, what they are feeding back to the ecu? Where you have been running the engine in non-cat...

Hi Rusty, glad you're still at it. I can't remember if you checked it but the misfiring you describe sounds really similar to a problem I had a while back. It was an iffy inlet manifold gasket. Do you have a steady vacuum at idle? If it was an overfuelling issue Rovergauge should show it up in...

I'm not 100% but doesn't the D4 have a AGM battery?? Worth checking as the characteristics are different to a normal wet type battery, something to do with re-charge time and max CCA output. The age of a battery is not necessarily or automatically the best indicator of health; my last car, the...

Wet grass isn't called green ice for nothing! Every situation is different but wherever you are always remember to go as slow as possible but as fast as necessary! Did somebody say more speed! Who me...? never!

I would be inclined to do a hard reset first. If that doesn't do it and the main battery is not 100% replace the battery. D3/4's are sensitive to battery condition as are Range Rovers. What voltage does your battery show across the terminals when measured first thing in the morning before you...

I'm pretty sure the Duratracs are an MT tyre so irrespective of 3PMS should give good traction on snow. I know the Insa Dakars on my RRC are not 3PMS marked but give excellent traction on snow but interestingly, a friend of mine bought Dakars more recently and they are marked 3PMS. Unfortunately...

D3 V8 brake upgrade is maybe worth it for some but I can't say I have found the D3 wanting in stopping power so far in my limited time of ownership. Admittedly it won't stop as quickly as my E class Benz but I don't drive the Disco the same. I am sure that tyre choice is also overlooked in terms...

AY up guys, I've been toying with tyres for my recently acquired D3 as it's got a right mix of cheap road biased tyres on it. Mine sits on 18's and I did look at the Falken tyres but wasn't completely convinced. Goodyear Wrangler AT's look pretty good but not exactly cheap although I don't pay...

Hello Jai! Sorry to hear about you having to change job but glad you found something else. Did you manage to get out on the lanes? I've not been out laning in probably 10 years although with my dodgey feet/ankles it wouldn't be a brilliant idea but who knows, maybe one day. I am going to be...

As Mark said, why change it? If it isn't a full system (4 branch headers, collector and front pipe) I wouldn't have said the exhaust is worth much. There is nothing particularly special about it so I would leave it. At least you'll know it shouldn't rust!

Just a quick note of caution, do not use high power coils on this ignition system, they don't like it and will fail. I have posted on this before. Make sure you check the wiring very carefully, old corroded wires break inside the insulation where you can't see the breaks. If any of the LT...

That's no gonna work! The timing marks and the slot in the balancer are two different things. You need to properly clean (scrub) the bottom pulley, I would suggest a good degreaser and a small brush - like a nail brush and you should uncover the timing marks. They are not very deep and are...

+1 for carb jetting. Also, look at carb balance. The only other thought is maybe try advancing the ignition timing and see if that helps.

91 RRC, same as mine! I believe 91 was a change over year so going forward be aware that some parts may actually be from the 1990 model - ABS axles are a good example. As for relays under the seat, two are the diode type, 30A for main EFI power and Fuel pump, there is no part number as such...

Sounds like, sort of, good news...ish maybe? 60psi priming is good. I'm not sure that with the engine running you would see the fuel pressure drop because the pump runs continuously when the engine runs so I wouldn't worry about it. If it was a fuel starvation issue I'm pretty sure you would...

Checking sills for rust... on a Land Rover..... I'm shocked! Thanks for the tip about the clips, not seen that one. I know about oil changes too. As soon as I can I will pop the timing belt cover off to check the belt and to see if the oil pump/timing cover has been changed. FBH works, no...

Well, I've done it now for sure. I've gone a bought a D3 as if keeping my tatty old RRC wasn't enough! I'll be selling that soon, will be sad to see it go but look forward to getting to know the D3. I've just ordered a Gap iiD, I just know I'll need it sooner or later. I don't come in here...

Compression looks suspiciously down on 1 & 2 and compared to the highest readings, there is more than 10% variation but importantly, the same variation is seen between adjacent pots (3&4) but to add to the confusion, the pots you're not happy with (3&4) show very healthy compression. I think you...