Diesel Compression Test or Leak Down Test? Toyota Land Cruiser 1HZ 1HD-T 1HDFT 1HDFTE

In this episode of Lock your Hubs 4WDing we check out how to perform a diesel compression test and does it compare with a leak down test on a Toyota 1HD-T Turbo Diesel engine in a Land Cruiser 80
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#LockYouHubs4WDing #CompressionTest #LeakDownTest

[@marktyler9464]

clearest explanation i've seen . want to see the leakdown test too.

[@LockyourHubs4WDing]

Thanks, looks like that'll be in an upcoming episode, so keep an eye out!

[@LockyourHubs4WDing]

Our leak down test is now live! kzbin.info/www/bejne/m5DbaYGbjcupg68

[@deriusnorris4463]

Agree awesome video. The leak down video was also great.

[@LockyourHubs4WDing]

Also check out our leakdown test video here! kzbin.info/www/bejne/m5DbaYGbjcupg68

[@Mr105.]

Man what is your background? You seem to be able to explain things really well, great work👍👍👍

[@LockyourHubs4WDing]

I'm a professional 4wding epistemophilic, it's like a disease, I've been afflicted for years! :)

[@Ghostrider-71]

Very informative video, thank you for posting.

[@LockyourHubs4WDing]

Glad it was helpful!

[@bertiew1234]

Yes - love to see a leak down test.

[@LockyourHubs4WDing]

Check out the videos on the channel, there's a video just on performing a leak down test.

[@PadmaDorjee]

This was so friggin informative man. I completely understood everything ypu said and I find it difficult to tie my shoelaces 🤣. Instantly subscribed and will watch the rest. 🏆

[@LockyourHubs4WDing]

Thanks mate, don't worry, I wear elastic sideded boots for a reason too mate!

[@Oddsy_Au]

Top info mate 👍 well presented

[@LockyourHubs4WDing]

Cheers mate!

[@muzzaball]

Well I am happy with finding out what is wrong with the donk, so whatever you publish, leading to that end result, I will watch! Cheers and good luck.

[@LockyourHubs4WDing]

Thanks mate, the head is still attached to the block at the moment, but it'll come off soon enough.

[@muzzaball]

@@LockyourHubs4WDing I am not much of a diesel mechanic, they worry me. What do you THINK it may be - stuck valve, or all sooted up?

[@gtb4]

Well done! Thank you for sharing

[@LockyourHubs4WDing]

Thanks for watching!

[@chrisgentle475]

Definitely a great vid mate, though you might confuse some people about when and what causes combustion in a diesel engine, great explanation other then stating that air "and fuel" enter the combustion chamber via the Inlet port and valve, you also said that eventually the compression causes combustion, while almost true you should mention that the point of combustion is actually controlled through injection timing and that only air is introduced through the inlet port and valves in a diesel, just seems important to mention is all, not having a go by any means, cheers

[@LockyourHubs4WDing]

You're right, ideally a diesel runs a dry inlet, thanks for the tips.

[@garymcgaw7212]

Thanks, great video

[@LockyourHubs4WDing]

Cheers!

[@BoranaKennedy-bi6rl]

Tanks for a information.

[@LockyourHubs4WDing]

You bet!

[@JackLockyer-bt3sz]

Top lecture, keep up

[@LockyourHubs4WDing]

Thank you, I will

[@fifiandmax]

Yes thanks please record a leakdown test

[@LockyourHubs4WDing]

I've added it to the list!

[@LockyourHubs4WDing]

Our leak down test is now live! kzbin.info/www/bejne/m5DbaYGbjcupg68

[@renependergrast7059]

Yes please, a video on how to perform a leak down test would be great.

[@LockyourHubs4WDing]

Keep an eye out for the vid, it's coming!

[@LockyourHubs4WDing]

Our leak down test is now live! kzbin.info/www/bejne/m5DbaYGbjcupg68

[@JS-ri2rx]

Really informative video. My mates car is burning oil from cyclinder 1. I suspect vlve seal. Other mechanics have said low compression. This helps alot.

[@LockyourHubs4WDing]

While a compression test will tell you the general health of a cylinder's seal, if it's not great, it won't be able to tell you where the issue possibly is, that's the job of a leak down tester.

[@BenMitro]

That was sick! (Is that the term that is used these days or I am of touch - again?). Hmm, sounds like a series on tracking down compression related issues is warranted. Tackle the basics - where can cylinder compression leaks occur and how to test for each possibility and then, perhaps, an indication of which are exceedingly rare. I'm running an 4JX1, so not *all* your viewers are interested specifically in Toyotas :), so it would be general diesel info.

[@LockyourHubs4WDing]

Hey, I've got an Isuzu, Mazda Suzuki and a Toyota in the driveway! I just like cars/bikes/planes, anything with an engine! There is more diesel related episodes in the pipeline!

[@texminchin4062]

Yes please do the leakdown video

[@LockyourHubs4WDing]

It's on the list!

[@LockyourHubs4WDing]

Our leak down test is now live! kzbin.info/www/bejne/m5DbaYGbjcupg68

[@ondrejmarko01]

Can you do video of symptoms? So we can look and compare if something similar happen to us. Thank you ;)

[@LockyourHubs4WDing]

Sounds like a great idea, thanks for the suggestion.

[@heftymerv]

Great video mate, what lead you to check the compression, any smoke, rough idle or oil use? I have a similar issue, well think I do/did, two mechanics gave me different results. One was 180 and the other 520 was my happy 400k birthday surprise which I also had the valves check at the same time. No smoke, no oil usage, no rough idle and no blow by. Be keen to see the leakdown test.

[@LockyourHubs4WDing]

The 80 was filling up the catch can a lot more than usual and when cold was a little rough at idle. While we haven't pulled the head off yet, I'm hoping it's only a head gasket and not a hole in the piston! Looks like we'll have to record the leakdown test as well.

[@heftymerv]

@@LockyourHubs4WDing we can only hope, fingers crossed

[@johnwigg3683]

Great explanation of “4 stroke”. Now i can pretend to know what I’m talking about when my son asks what the term means

[@LockyourHubs4WDing]

Haha, just remember suck, squeeze, bang, blow!

[@CleddyVele]

Can u come back with the leak down test pls ?

[@betsabethguerra-ho5816]

Hey mate, i didn’t disconnect the fuel 🤦🏻‍♂️.. but I got 520 psi all cylinders. Any advice would be appreciated cheers mate keep up the content and videos

[@LockyourHubs4WDing]

That'll be fine, you probably don't want to push diesel up into your gauge, that's why you should disconnect the fuel system.

[@andyhitchman7203]

Great video. What symptoms was the engine showing that led you to run the test?

[@LockyourHubs4WDing]

It was filling up the catch can with oil faster than usual and a little rough at cold idle. Thanks for the kind words.

[@Ghostrider-71]

@@LockyourHubs4WDing would you advise adding a catch can for the 1-HDT engine?

[@LockyourHubs4WDing]

@@Ghostrider-71 depends on the emissions setup in your neck of the woods. If it has EGR, then definitely yes, just make sure the catch can you choose can flow enough for the engine.

[@ronhall2075]

Aww gee why doesnt anyone do a compression test on a HDFTE.......it aint anywhere on KZbin

[@bigpola3200]

a great explanation but can you also include in the diagram where the glow plug is in relation to piston and cylinder? and what does it do?

[@LockyourHubs4WDing]

The location of the glow plug is dependant in the head design and whether the diesel is a indirect injection (like a 1HZ) or direct injection (like the engine tested a 1HD-T). In an indirect injection engine the glow plug is usually in the precombustion chamber, in a direct injection engine it'll be in the combustion chamber itself. The purpose of the glow plug is to help start a cold engine.

[@atomichurley]

keen for the leak test

[@LockyourHubs4WDing]

It's on the cards!

[@LockyourHubs4WDing]

Our leak down test is now live! kzbin.info/www/bejne/m5DbaYGbjcupg68

[@atomichurley]

@@LockyourHubs4WDing Thanks buddy!

[@KiyaWarrior]

Great vid, hope to swap a diesel into my FZJ80 some day. Got my 7.3l powerstroke in the mean time atleast.

[@LockyourHubs4WDing]

The powerstroke is a great engine! I like the power of the petrol 80s, just not the fuel bill....

[@KiyaWarrior]

@@LockyourHubs4WDing Never stop making 80 series vids friend :)

[@LockyourHubs4WDing]

They will pry the dual solid axles with coils all around from my cold dead hands! :)

[@luiscarlosrojasmeneghel3675]

7.3 mucho peso y si está standard jala menos que un sensillo 15bt o un 1hdt originales Toyota con solo injectores de mayor caudal y turbo ball bearing de 54mm inducer compresor y 49mm exducer de turbina housing .48

[@luiscarlosrojasmeneghel3675]

Con 20psi estás jalando de a igual al 7.3 pero mucho menos consumo y menos peso ya q el peso es malo en offroad

[@jackcouper7394]

Hey mate, what compression tester kit is this? Finding it hard to find the right kit for a 1hdt glow plug size

[@LockyourHubs4WDing]

That was a custom adaptor made by enzed.

[@mohamedgawad7564]

Hey Great video but how long should i expect 1hdt will last

[@LockyourHubs4WDing]

I've seen them go 600,000km with decent maintenance.

[@joegordon4387]

Cool

[@LockyourHubs4WDing]

Thanks!

[@deriusnorris4463]

Watched both videos. What was the end result when you opened up the engine? That would have made a great video.

[@LockyourHubs4WDing]

It was a holed piston.

[@deriusnorris4463]

@@LockyourHubs4WDing that sucks. I have a FTE which has blow by a fair amount with white puffs... Stressing out for when I take it in... Is what it is... Thanks again.

[@deriusnorris4463]

@@LockyourHubs4WDing was it a full rebuild?

[@LockyourHubs4WDing]

@@deriusnorris4463 yes, change over long motor.

[@deriusnorris4463]

@@LockyourHubs4WDing ouch. Thx.

[@blakegt4]

This process is not the same for the 1HD-FT or 1HD-FTE as they do not have glow plugs.. the only way to test compression is to pull the injectors and use a special tester.

[@LockyourHubs4WDing]

Thanks for the tip!

[@atagalongtours5401]

Like to see that

[@LockyourHubs4WDing]

Looks like I'm going to have to schedule it up!

[@anthonyhay4236]

My 1hz has 350-370 around that for all 6 cylinders. I wonder why its not 450+

[@LockyourHubs4WDing]

Probably worn.

[@anthonyhay4236]

@@LockyourHubs4WDing maybe but doesnt burn oil and has bugger all blowby

[@markshort9098]

You wouldn't bend valves from hydrolic lock but piston, rod or bearing damage is pretty much guaranteed

[@JackLockyer-bt3sz]

🤠

[@LockyourHubs4WDing]

Cheers

[@tituslane4929]

Cant this be used as a leak tester as well?

[@LockyourHubs4WDing]

I guess so.

[@tituslane4929]

@@LockyourHubs4WDing many thanks.... I mean does it need to be tdc for checking a suspected head gasket? With this its pretty random but once pressure is reached watch the gauge go down ? Is that correct? Thanks

[@LockyourHubs4WDing]

@@tituslane4929 it's best to test at TDC

[@tituslane4929]

@@LockyourHubs4WDing thankyou

[@LockyourHubs4WDing]

What's you best trick for diagnosing a sick engine?

[@LockyourHubs4WDing]

Haha!

[@BenMitro]

@Tony Munro Yep, that's my go to fault finding... :)