2.5 NA Diesel head removal - what is wrong with this engine?

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Britannica Restorations Ltd
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[@garthrichert5256]

You include us so much in your videos, we want to reach out and get stuck in too. Thanks a ton.

[@BritannicaRestorations]

We are all in this together ( Where have I heard that before..)

[@nzrestoration9486]

A little frustrating for you, but fascinating for us! This is better than watching an Agatha Christie movie. 😃

[@BritannicaRestorations]

It really is a mystery !

[@VDPEFi]

Mike hearing expressions like “do myself a mischief” is what makes your channel awesome. Plus the brilliant content obviously...!

[@peterjones2845]

You would make a brilliant teacher

[@BritannicaRestorations]

Thank you! Mike

[@tevacowan2965]

Thanks for the lesson sir, I own a Land Rover Defender that doesnt fire up after you have used . I will have to wait twenty minutes or more to restart the véhicule.......

[@billywhizz98]

The plot thickens No1 cylinder

[@matthewyouens6461]

I had one of these engines that smoked and ran rough after lots of new parts, I found the injection pump pulley had a crack in it and was opening up and advancing the timing and over fueling on one cylinder. Worth a check with some dye pen or just visual check. Great videos Matt

[@BritannicaRestorations]

Thanks Matt I have seen the cam pulleys on the 200Tdi crack too

[@TheDaf95xf]

Great video 👍🏻 Your so good at explaining things 😁 Stevie 🇬🇧

[@BritannicaRestorations]

Thank you! Mike

[@jamesbarker4808]

Low mileage engine, I think red oxide was from the factory and eggshell green was once they had been rebuilt at reme workshop. Good video again, thanks, found your video on o rings for the dash gauges and have managed to find a company that suppliers them separately. Many thanks Jim.

[@BritannicaRestorations]

You're welcome Jim!

[@berthold171]

Hello !!! I have a S10 chevrolet pickup with this Maxion 2.5 engine and blow it a little bit through the oil cap! and I like old Land Rovers! saw in many movies in Africa! Florianópolis Brasil 2019 !!!

[@paulmartin6397]

I expected to see at least one of the swirl pots sat in the block when you lifted the head but, although cracked, they were still attached to the head which is a good sign that they engine is low mileage. It will be interesting to see if the replacements sit noticeably proud of the head - usually an indication of previous skimming, not likely with an ex-military engine and they look original anyway. Have a look inside the old pots when you take them out as they have little nodules which burn away with use.

[@BritannicaRestorations]

New video loading right now !

[@petej536]

look forward to seeing inside those hotspots

[@BritannicaRestorations]

They were good - see recent video

[@andicog]

My 2.5 had a similar problem, had pump rebuilt, front pulley woodruff key replaced etc, had very slightly low comp on one cylinder, turns out it had a slightly bent rod, could see it easy once the pistons were at top dead centre, one was ever so slightly low . It ran OK, not even a true miss fire, I did thousands of miles with it, was smokey on start up but reasonable when running, secondhand rod and it was fine.

[@BritannicaRestorations]

I checked the piston heights and they were within 2 thou

[@andicog]

@@BritannicaRestorations You could see it with the naked eye on mine, it wasn't much but was just enough to make it run rough. I left my n/a at Glencoyne when he fitted the 300tdi, pump only had a couple of thousand miles on it after a good rebuild by fuel injection services. N/a ran perfect after the work but the 300 makes my 110 much more usable. Keep up the good work Mike.

[@wesleyconn620]

well in all honesty i would have myself taken the vehicle for a long drive with injector cleaner first .... the point being it has or rather had stood for quite a while. and sometimes things can be sticky so although it is not a fix for all things it might have given her some time to cough splutter and .... well we all know .. but i love watching your vids as it reminds me of myself so often keep it up regards from Scotland :)

[@BritannicaRestorations]

Injectors were tested and were within limits - this vehicle is not roadworthy and not inspected so cannot be driven on the highway Mike

[@coyote5735]

I wouldn't be too discouraged in fact I would say it still indicates the problem is with the pump.

[@BritannicaRestorations]

Needs fixing with an Isuzu ......

[@chasephotos4780]

As an owner of a 2.5na, I am watching with keen interest. Would you be able to show the procedure for the timing belt replacement/setting the timing when you get it all back together, please?

[@BritannicaRestorations]

No problem! Mike

[@nbell4166]

I'm with you as need to do mine as well before August so looking forward for it. In a meantime there is step by step on this link but it's always better to see real time video how it's done. it.forums.lr4x4.com/topic/7880-25-na-timing-belt-replacement/

[@craig_chaznibond452]

I'd ask Mr Jameson's for moral support! I'm totally stumped.

[@BritannicaRestorations]

If this went to a dealer they would change the motor for a new crated one

[@whitacrebespoke]

Britannica Restorations Ltd aye and charge you an arm, a testicle and two kidneys for the privilege. A mate had a TD5 changed at a main dealer. Cost him obscene amount it didn’t even get him home before it was back on a tow truck for the exact same fault that had killed the first lump. Faulty oil pump fitmemt

[@craig_chaznibond452]

I was in Craddock's UK a few weeks back and they had a 300tdi on a crate. I'm sure it was just short of £3000! No ancillaries.

[@greebo7857]

Seriously, though, I have been waiting for you to pull the head, as I reckon you needed to, but: I thought you would find a problem with one of those plugs. I sure didn't expect the diesel leak thing to show what it did. The bores aren't showing any damage? 'Cos it has to be a broken ring or a holed piston surely? Certainly this has destroyed my faith in compression tests.

[@BritannicaRestorations]

Yeap, strange eh - the rear cylinder was low but holding good - not quite what I expected!

[@davehaining9830]

Hahaha you got to laugh, I feel you pain

[@mattluszczak6567]

Hey mike. I need your opinion. Im wishing to freshen up a 300tdi for cross country trip. Im really keen to replace big ends and mains as motor has done 300k. Im putting a new head from turners prob as the existing head does work but has a minor crack around exhaust valve. Anyways i would check bores and possibly replace rings? Would you replace rings aswell or not if not reboring If going that far might aswell replace cam bearings which would need a machine shop to push out and line bore? Do the cams wear?

[@BritannicaRestorations]

The cylinder blocks are made of a much better material than the old 2 1/4 Series engines and I have only bored 2 blocks - that was due to overheating and scoresI always fit new ringsAs for cam bearings, it seems the front one can give issues and wear due to belts being too tightI have a tool to replace them, so you may want an engine shop to fit them - the alignment of the oil holes in the bushes are critical!The cams give very few problems - check for evenness and grooves around the oil sealDon't be tempted to use cheap parts - go OEM where possible

[@randomoldbloke]

As long as the oil has been changed regularly 300k is nothing i did my head at 320k no measurable wear and cross hatching was still there . Put the ported head from turners on makes a huge difference. At that mileage be worth getting the injection pump rebuilt get them to wind it up 10 to 15% they still get below 8k/100k of diesel and hardly fade on hills . I use mine for remote travel in Australia

[@ralphplant]

Since the engine looks sound, my money is back on the injector pump. You tested to see if it was pumping fuel, which it was, but not tested pumping fuel under pressure. I wonder if you could hook it up to the injectors while they are out of the engine and see whether #3 is producing a nice spray of fuel provided by the injector pump. You did this on the bench, so the injector itself should be good. Not sure how you would do this with the non-flexible pipes... Maybe after you have the engine back together you could make a custom pipe and work through the injectors one at a time. Of course if you are getting a new pump anyway, then just wait for that and save yourself the trouble. No comment on #1 cylinder. Ghost in the machine.

[@BritannicaRestorations]

Well we are having bad luck on this! We need a new pump for another engine as it has a broken shaft Only there are non available anywhere - we can send in the old one but no one has exchange units on the shelf to sell outright

[@greebo7857]

I think Rupert is haunting you Mike. Nothing else makes sense.

[@BritannicaRestorations]

Anything is possible now!

[@solantar6912]

Hello, im replacing the valve guides in a 300tdi ,new guides are no better than the old ones being 0.30 sideways movement the manual states clearance should be 0.15 unless specs have changed,any advise would be great,thanks

[@BritannicaRestorations]

Check the valve stems

[@solantar6912]

@@BritannicaRestorations thanks i have new valves to use the are good,new guides are not to spec

[@BritannicaRestorations]

There are 2 qualities of guides - STD and pre reamed LGJ100880 - STD LGJ100880RE pre reamed

[@fenna_pel]

Hello Mike, That is an interesting mystery you have on your hand with this engine. I remember something like capilary effect with fluids. May that have some influence on no 1 cylinder? Anyway, you have my moral support with this engine ... hope you will find the root of the problems

[@BritannicaRestorations]

Cheers Fenna! I have another video on this episode loading now!

[@robertcruickshank5617]

You know that #1 cylinder is going to drive you bonkers now until you pull the piston. Low hours engine, maybe rings haven't set in..?

[@BritannicaRestorations]

Could be - or the rings have not been put in right - compression was good though

[@willyham4008]

I had my head gasket done a year ago and have just found a hotspot stuck to the waxoyl on top of my chassis,how important are they?seems to run ok

[@BritannicaRestorations]

Do you mean a core plug or frost plug? The hot plug is inside the engine

[@willyham4008]

Hi,thanks for the speedy reply. Its the swirl chamber,the part on your cylinder head that was cracked,thanks.

[@BritannicaRestorations]

I an quite surprised it runs!

[@willyham4008]

It runs as it did before,can hit 60mph if need be. Engine was rebuilt in 2008 by the M.O.D it cant have rested on the chassis since then as I have had it waxoyled. I only had the head gasket done as I think the valve seals had gone leading to rapid oil loss. I use it daily to go to work too. Maybe on a long journey i.e further than 20 miles it will show.

[@BritannicaRestorations]

I would have thought that there would be a lot of compression loss and the cylinder running badly

[@o0wizzetta0o]

Can you not use one of your electric pumps to test?

[@BritannicaRestorations]

It is not a fuel supply issue, as 1 + 2 cylinder are firing perfectly

[@jrgenfriborg3508]

Ohh noo. Well hope you have time. No 2 rusty. Not good. 1 leaky not good. Think rings is booking on 1 and maybe stock in 2 as they not clear the wall, I think engine must out. New rings and a hone. My thoughts.

[@BritannicaRestorations]

i will see!

[@malcolmyoung7866]

See what happens when you start digging, Mike...conundrums abound...

[@VDPEFi]

Were you apprenticed at Land Rover?

[@BritannicaRestorations]

No I was an apprentice fitter

[@spitfiremk1uk]

This engine has had poor atomization from its injectors for some time. This has caused excessive heat to build up in the Pre combustion chambers (Hot spots). This causes premature cracking but it also burns away the little internal "pips". These internal "pips" help start combustion even when there is low turbulence (Low RPM). I bet money when you pop out those hot spots and look inside you will see the pips burned away or filled with carbon completely. New hot spots combined with your overhauled injectors (Assuming the pump is good) and it will be fine. (Famous last words! LOL) www.lrseries.com/shop/product/listing/5165/ERR1223-HOT-SPOT-2-5-DIESEL.html

[@BritannicaRestorations]

I will pop them out today, but I have seen much worse running without a misfire

[@gvaly699]

When he finally will get 4 good (and functionally identical) injectors, the problem will disappear but maybe he like people scratching their heads .

[@BritannicaRestorations]

Injectors bench tested and all even - still rough running

[@spitfiremk1uk]

@@BritannicaRestorations For sure the cracking is normal and does not equate to any problem on its own. Nearly all crack and are acceptable to be refitted even when cracked. I think it is more about the pins on the inside that can cause low speed partial firing when burned away. Assuming the pump is good etc.

[@gvaly699]

If the Injectors were bench tested and are all even (I will consider this valid only with a test bulletin generated by the test bench ) the only possibility I can think of for a misfire is if the fuel pipe for 3 (and 4) is internally restricted (!)

[@phantomwalker8251]

looks like some one thru it together,then sold it.half a re con.

[@igigig27]

Take your watch of , its looks far to good to get scratched from that engine bay . LOL

[@BritannicaRestorations]

10 years old and not a mark on the glass!

[@tourettes4893]

It seems the more we know, the less we know? ;)

[@BritannicaRestorations]

Exactly!

[@grahamsmith2039]

Ahh Bugger

[@BritannicaRestorations]

I did an 'Unlucky Alf' when fitting this Vortec engine - up this weekend!

[@grahamsmith2039]

Britannica Restorations Ltd pop and see mrs bainbrrige, nice lady , very clean

[@BritannicaRestorations]

But her cat and my privates!?

[@gibsonethirty2836]

Well all I got is one worn down finger and a bald spot from scratching ones head!

[@BritannicaRestorations]

It gets worse! New video loading!

[@mattluszczak6567]

Mikos...

[@martings1268]

the injectors work fine?

[@BritannicaRestorations]

All tested and re calibrated

[@martings1268]

@@BritannicaRestorations its must be the injection pump..

[@Dieselpwr]

Pull it rering it

[@GrumpsBarn]

....do raccoons drink diesel?

[@BritannicaRestorations]

Jameson's...

[@simonroberts9759]

Hi Mike, time to call Inspector Clouseau!!!! I assume that the compression test checks compression when the piston is at the top of the block?? Could no 1 cylinder have a problem lower down the bore? Bore worn? If so, wouldn't you expect to find contaminated oil? As you can see, I'm not an expert!! Keep going, it's making a fascinating series of videos. Simon.

[@BritannicaRestorations]

Well I think it has us all going now! update today!

[@machiningbasics1729]

Put a v8 in instead lol great work

[@BritannicaRestorations]

Tempting!

[@bigm383]

I thought your esteemed PM had just banned disposable plastic because it's all being thrown into the ocean. You'll be in strife if the Plastic Police catch you with that plastic cup. As for the engine......

[@BritannicaRestorations]

Ah yes, our glorious leader opens his mouth and puts his foot in it!37 million in Canada using 57 million plastic straws a day - go figure...

[@bigm383]

@@BritannicaRestorations and all being inserted straight up turtle's nostrils by his account. Don't worry, we've got some Trudeaus in Australia.

[@ammocraft]

Big M Yeah, but the main clown just lost the election, thankfully!

[@bigm383]

@@ammocraft So true!!

[@BritannicaRestorations]

The local Liberal office range me up to see if I support Turdeau I was on my 4th double Jameson's of the evening.. Told them Turdeau was a bloody embarrassment for Canada! He has not done what he stated in the manifesto - Oh sir they were just suggestions! 5th glass now! Flooding undocumented immigrants into Canada where I had 3 years of waiting and probing I think they said something about 'diversity is out strength' 6th glass... And then I get into a rant and down half a bottle Still, seemed worth it!

[@peterjones2845]

Check your racoons breathe, he might have drank the diesel out of the number 1 cylinder, just getting my 2 pennunce worth in, sorry

[@BritannicaRestorations]

I just did but he was on the Jameson's last night...