yanmar b08-3 won't start

S

sandbags89

Member
neither of those sound pretty :(

are there ways to determine whether either of these are the case?
 
S

sandbags89

Member
View attachment 35480

been sent this diagram that shows a couple relays that could affect starting... how would i test a relay to know if its doing its job?

it also shows the slow-blow fuse on this diagram that i mentioned previously.. unfortunately it does not show the actual locations in regards to where it is on the machine. My manual seemed to give me the wrong location for the slow-blow fuse strangely, but it lists it as a cause for non-starting in the troubleshooting section. need to find that effing thing!

going back to the relays... if one of these were thought to be faulty, would this simulate the "heavy breathing"?
was having a look at these just now and i'm not sure how to test these. Example of one of them below and the meter i have:
IMG_20220521_094829.jpg
IMG_20220521_094853.jpg

IMG_20220521_094859.jpg


what do i stick where? 😅
Does it have to be beer glass? Is a wine glass not as effective??🤣

IMG_20220521_094611.jpg


thought this glass was appropriate...no seperation
 
S

sandbags89

Member
I think as you said the engine was running poorly, maybe starter isn't the issue. But if you do decide it's worth a look it's not to difficult to remove, strip down and clean. Check to see if brushes have worn. This video is helpful. Sorry it's in Dutch!

unfortunately they put this thing together i don't think i can get to the starter to remove it.
Even if i unbolt the exhaust mani there seems to be another bracket for the exhaust further down which I can't get to :cautious:
IMG_20220521_094907.jpg
IMG_20220521_094918.jpg
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
going back to the relays... if one of these were thought to be faulty, would this simulate the "heavy breathing"?
was having a look at these just now and i'm not sure how to test these. Example of one of them below and the meter i have:
No
exhaust /starter looks a bitch:cry:
 
Mick-the-fitter

Mick-the-fitter

It’s what I do!
Ok good job, it has lots of crankcase pressure, hence the smoke from rocker area, valves and rockers all working well, have you got an oil can? It’s looking like piston rings and or bores, in its present condition, squirt some oil down the inlet manifold, only a small amount as we don’t want bent rods as well! It may raise the compression enough to start! If so it’s engine out to get the sump off!
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
Ok good job, it has lots of crankcase pressure, hence the smoke from rocker area, valves and rockers all working well, have you got an oil can? It’s looking like piston rings and or bores, in its present condition, squirt some oil down the inlet manifold, only a small amount as we don’t want bent rods as well! It may raise the compression enough to start! If so it’s engine out to get the sump off!
I personally favour the squirt into the empty injector ports ... you know it's going where you want it to be ...:rolleyes:
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
Ok good job, it has lots of crankcase pressure, hence the smoke from rocker area, valves and rockers all working well, have you got an oil can? It’s looking like piston rings and or bores, in its present condition, squirt some oil down the inlet manifold, only a small amount as we don’t want bent rods as well! It may raise the compression enough to start! If so it’s engine out to get the sump off!
least he could get at the starter then :ROFLMAO::ROFLMAO::ROFLMAO:
 
M

Maxus

Well-known member
It does look like quite a lot of exhaust gas escaping from somewhere near the pushrods... The engine is cold though so maybe once up to temperature would seal up a bit better? I would have thought that you could at least get it started with a good squirt of easy start as the engine is turning over. Getting the engine running would reveal more, if it's possible!
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
It’s the white sock/sandal combo I reckon - your digger has potentially lost all respect for you sadly…
you bad man MB :ROFLMAO: .... the man's in La Sud de France FFS :giggle:.... bet it's 'kin warm there this morning :love:..... better than our paltry 12C :(
 
Mick-the-fitter

Mick-the-fitter

It’s what I do!
It does look like quite a lot of exhaust gas escaping from somewhere near the pushrods... The engine is cold though so maybe once up to temperature would seal up a bit better? I would have thought that you could at least get it started with a good squirt of easy start as the engine is turning over. Getting the engine running would reveal more, if it's possible!
Maybe easy start is why it’s like it is! And then the can ran out🤨
 
Mick-the-fitter

Mick-the-fitter

It’s what I do!
Unfortunately the engine is put in to the chassis which comprises the counterweight, and is put in basically complete.
 
Mick-the-fitter

Mick-the-fitter

It’s what I do!
Yes your probably right! Dont use easy start... but it would be very helpful to see the engine running.
I agree a running 1 and a half cylinder Smokey engine is better than not at all👍
 
S

sandbags89

Member
No
exhaust /starter looks a bitch:cry:
bitch indeed. Taken off all the panels that are removeable. But that back yellow part of the machine is part of the chassis. Awfully inconvenient.
Ok good job, it has lots of crankcase pressure, hence the smoke from rocker area, valves and rockers all working well, have you got an oil can? It’s looking like piston rings and or bores, in its present condition, squirt some oil down the inlet manifold, only a small amount as we don’t want bent rods as well! It may raise the compression enough to start! If so it’s engine out to get the sump off!
I don't have an oil can, just a bottle of engine oil i used before. pour oil into the inlet I had my hand over before?
It’s the white sock/sandal combo I reckon - your digger has potentially lost all respect for you sadly…
😂 quite possibly
I personally favour the squirt into the empty injector ports ... you know it's going where you want it to be ...:rolleyes:
yea maybe more confident with this instead, like i did before. How much is little bit....cap of oil in each injector, or half..?
It does look like quite a lot of exhaust gas escaping from somewhere near the pushrods... The engine is cold though so maybe once up to temperature would seal up a bit better? I would have thought that you could at least get it started with a good squirt of easy start as the engine is turning over. Getting the engine running would reveal more, if it's possible!
yea I wish i could mate, but literally haven't got it to start in months since I managed to move it and park it up there. Hasn't budged since.
Maybe easy start is why it’s like it is! And then the can ran out🤨
well i've never had to use easy start on it before. I've only tried it once recently to try start it, and the engineer that came down also gave some squirts to attempt to get her going.
Can’t remember if you said the glow plugs work?
Yes. That is, I know they are working plugs. They are new, and I also tested them on a battery, and they glow up red.
However, (i mentioned this in previous posts) few weeks back I removed them from their seats but left them connected and couldn't get them to glow up. I wasn't sure if It was because I wasn't grounding them properly - but I previously was able to get them to glow up while connected when me and the old man had a go.

I didn't look further into it because the engineer said in this weather it shouldn't even really need plugs. Was a scorcher that day also.
 
Mick-the-fitter

Mick-the-fitter

It’s what I do!
Ok take a bit of w electrical wire, long enough to reach the battery positive and one glow plug, twist the wire around the thread on the top of the glow plug, tip half a cap of oil in the manifold, put the wire on the battery pos for 20 seconds, hand over inlet, try and start!

Send vid👍
 
S

sandbags89

Member
okay tested glow plugs again they defintely work. Tested with battery, tested with scrap cable and tested whilst connected to machine and working every time (i must not have been properly grounding it last time).

Ok take a bit of w electrical wire, long enough to reach the battery positive and one glow plug, twist the wire around the thread on the top of the glow plug, tip half a cap of oil in the manifold, put the wire on the battery pos for 20 seconds, hand over inlet, try and start!

Send vid👍

did this, oil in, hand over intake.... heres the results

 
Top