Theres life in the old dog yet
- Thread starter Navyreg1970
- Start date
well, I found a downloadable manual - however it has raised a query.
Its either a 4107 or 4108 engine. According to the manual, glow plugs were only fitted on engines for refrigerated vans - normal vehicles have a cold starting aid - which looks like a glow plug at the air inlet port - the thing is, how the hell does that work? obviously its supposed to get hot but surely it cant heat the amount of air being drawn in, any ideas?
At the moment it needs a squirt of easy start from cold when i hold the preheat switch i can hear a bit of a fizzle from the start aid but thats about it
The Dog is home....
http:www.singleusemedical.co.uk
my new business
Its either a 4107 or 4108 engine. According to the manual, glow plugs were only fitted on engines for refrigerated vans - normal vehicles have a cold starting aid - which looks like a glow plug at the air inlet port - the thing is, how the hell does that work? obviously its supposed to get hot but surely it cant heat the amount of air being drawn in, any ideas?
At the moment it needs a squirt of easy start from cold when i hold the preheat switch i can hear a bit of a fizzle from the start aid but thats about it
The Dog is home....
http:www.singleusemedical.co.uk
my new business
Try this 
(The sound you hear is a blowtorch)
http://www.youtube.com/watch?v=E9_GNIlzeSo
'I intend to live forever - so far, so good'
(The sound you hear is a blowtorch)
http://www.youtube.com/watch?v=E9_GNIlzeSo
'I intend to live forever - so far, so good'
The 4108 heater plug is quite good, sometimes it needs 2 hits, but it works well. My Hunter used to get 15 secs or 30 in the winter
"You,re only supposed to blow the bloody SLIDING doors off"
"You,re only supposed to blow the bloody SLIDING doors off"
right i think i have it. The thermostart is a glow plug at the air intake - unlike normal glow plugs it has a small fuel line attached from the low pressure injector leak off pipes. A small ball check valve holds the fuel shut during normal running operation. When you energise the thermostart the heat expansion causes a tiny amount of fuel to leak through and hit the glowing coil where it flashes off into hot smoke (sometimes flame) which then gets the engine started. so the blowtorch wasnt far off renaultvation.
however I have had a look at the Dog, it is fitted with just a normal glow plug - i.e. it doesnt have the fuel supply connection on the end, just a blank - therefore it gets hot but does nothing.... now to locate the missing fuel line - hopefully its not hanging down somewhere squirting my valuable diesel away.
The Dog is home....
http:www.singleusemedical.co.uk
my new business
however I have had a look at the Dog, it is fitted with just a normal glow plug - i.e. it doesnt have the fuel supply connection on the end, just a blank - therefore it gets hot but does nothing.... now to locate the missing fuel line - hopefully its not hanging down somewhere squirting my valuable diesel away.
The Dog is home....
http:www.singleusemedical.co.uk
my new business
it wont work without the fuel supply to it though - its not like a normal glow plug
The Dog is home....
http:www.singleusemedical.co.uk
my new business
The Dog is home....
http:www.singleusemedical.co.uk
my new business
from a boating forum
Q)Hi all,
How does the thermostart work on an old 3CX with a perkins diesel engine?
There seems to be a diesel fuel feed, which is leaking slightly, and an electrical connection.
This old machine has no trouble starting in the cold, but now that I have looked at it, I'm not sure if thers is a primer for the diesel feed as well as electrical pre-heating before starting
I put a spanner to all the connections, and they all needed a turn or more to tighten them up
Also after looking the various fuel lines, they all seem to have various rubber hoses between the lenghts of metal(copper?) every so often, is that normal, or is this a patch up job somewhere in the past?
The engine is running fine btw
A)Usually there is a low pressure diesel feed from the injector leak off pipes to the glow plug(no primer system required) and a wire to the key switch which is manually energised for 10-20 seconds when the key is turned to just before the start position.That is the way my 83 white cab 3cx is.IIRC,the diesel feed is now from the top of the filter housing but I think the leak off run back to there anyway. Can't remember off hand.The system probably was originally all piped with steel but perished parts have likely been replaced with rubber for convenience.If you can stop the leaks,don't be concerned.You must have a good tight engine if it doesn't need heat in the cold weather.I have found some of the older Perkins like warmed before they start.
The Dog is home....
http:www.singleusemedical.co.uk
my new business
Q)Hi all,
How does the thermostart work on an old 3CX with a perkins diesel engine?
There seems to be a diesel fuel feed, which is leaking slightly, and an electrical connection.
This old machine has no trouble starting in the cold, but now that I have looked at it, I'm not sure if thers is a primer for the diesel feed as well as electrical pre-heating before starting
I put a spanner to all the connections, and they all needed a turn or more to tighten them up
Also after looking the various fuel lines, they all seem to have various rubber hoses between the lenghts of metal(copper?) every so often, is that normal, or is this a patch up job somewhere in the past?
The engine is running fine btw
A)Usually there is a low pressure diesel feed from the injector leak off pipes to the glow plug(no primer system required) and a wire to the key switch which is manually energised for 10-20 seconds when the key is turned to just before the start position.That is the way my 83 white cab 3cx is.IIRC,the diesel feed is now from the top of the filter housing but I think the leak off run back to there anyway. Can't remember off hand.The system probably was originally all piped with steel but perished parts have likely been replaced with rubber for convenience.If you can stop the leaks,don't be concerned.You must have a good tight engine if it doesn't need heat in the cold weather.I have found some of the older Perkins like warmed before they start.
The Dog is home....
http:www.singleusemedical.co.uk
my new business
Beachboy
0
My old Dodge 50 recovery truck had a 4.0 Perkins with the glow plug in the air intake and no fuel supply to it....it worked fine even in the coldest weather when it was -19 degrees last year!
Diesels have a nasty habit of becoming addicted to easy start so I would go with the advice here and give the glow plug a little longer to work. It would probably pay to have a good engine service, especially change the diesel filter and maybe have the injectors cleaned and tested.
Bloody Commer`s!
Diesels have a nasty habit of becoming addicted to easy start so I would go with the advice here and give the glow plug a little longer to work. It would probably pay to have a good engine service, especially change the diesel filter and maybe have the injectors cleaned and tested.
Bloody Commer`s!
My Hunter never had the fuel feed connected either.
"You,re only supposed to blow the bloody SLIDING doors off"
"You,re only supposed to blow the bloody SLIDING doors off"
Beachboy
0
As far as I was aware the glow plug is just to heat the air in the manifold and air intake and that is enough to fire the engine, it certainly worked on the Dodge.quote:
Originally posted by commeracer
My Hunter never had the fuel feed connected either.
"You,re only supposed to blow the bloody SLIDING doors off"
Bloody Commer`s!
Originally posted by commeracer
My Hunter never had the fuel feed connected either.
"You,re only supposed to blow the bloody SLIDING doors off"
Bloody Commer`s!
i suppose it doesnt help that there isnt an air filter fitted.
on parts4engines the thermostarts for both the 4107 & 4108 have the fuel connection (covered with a plastic cap
http://parts4engines.com/index.php?main_page=product_info&cPath=42&products_id=558
The Dog is home....
http:www.singleusemedical.co.uk
my new business
on parts4engines the thermostarts for both the 4107 & 4108 have the fuel connection (covered with a plastic cap
http://parts4engines.com/index.php?main_page=product_info&cPath=42&products_id=558
The Dog is home....
http:www.singleusemedical.co.uk
my new business
quote:
Originally posted by Navyreg1970
i suppose it doesnt help that there isnt an air filter fitted.
on parts4engines the thermostarts for both the 4107 & 4108 have the fuel connection (covered with a plastic cap
http://parts4engines.com/index.php?main_page=product_info&cPath=42&products_id=558
The Dog is home....
http:www.singleusemedical.co.uk
my new business
tim did say that you can fit a k&n filter to the perkins
Originally posted by Navyreg1970
i suppose it doesnt help that there isnt an air filter fitted.
on parts4engines the thermostarts for both the 4107 & 4108 have the fuel connection (covered with a plastic cap
http://parts4engines.com/index.php?main_page=product_info&cPath=42&products_id=558
The Dog is home....
http:www.singleusemedical.co.uk
my new business
tim did say that you can fit a k&n filter to the perkins
from the manual
" to prevent thermostart damage, it is essential that the thermostart is not operated DRY. After any operation that allows fuel to drain from the thermostart feed pipe, the pipe must be disconnected at the thermostart and all air bled from the pipe before the thermostart is operated "
The Dog is home....
http:www.singleusemedical.co.uk
my new business
" to prevent thermostart damage, it is essential that the thermostart is not operated DRY. After any operation that allows fuel to drain from the thermostart feed pipe, the pipe must be disconnected at the thermostart and all air bled from the pipe before the thermostart is operated "
The Dog is home....
http:www.singleusemedical.co.uk
my new business
heres a link to a perkins fault finding guide
http://www.scribd.com/doc/70882556/Perkins-Engine-Fault-Finding-Guide
The Dog is home....
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my new business
http://www.scribd.com/doc/70882556/Perkins-Engine-Fault-Finding-Guide
The Dog is home....
http:www.singleusemedical.co.uk
my new business
to be honest i think im looking of ways to avoid a piston ring change. easy start "addiction" is caused by the higher expansion rates of the product damaging the piston rings so after time its use reduces compression - therefore the engine is harder to start - so you use more easy start and so it follows. It may have been years ago that the thermostart wasnt needed as the compression ratio was high enough - but the exhaust on the dog is still running a little black suggesting burning oil - Theres a vintage engine specialist in bishops stortford I might have a chat to him as I dont have the facilities to strip an engine at home - as a minimum I think I will need to check the injectors for correct atomisation
The Dog is home....
http:www.singleusemedical.co.uk
my new business
The Dog is home....
http:www.singleusemedical.co.uk
my new business
PS . Many thanks panky for emailing the link to those spares!
The Dog is home....
http:www.singleusemedical.co.uk
my new business
The Dog is home....
http:www.singleusemedical.co.uk
my new business
Bit late but just wanted to say congratulations on getting home safely!!
The dog looks amazing - well done Woolfy!
Campaigning to get Yori back on the road!!
The dog looks amazing - well done Woolfy!
Campaigning to get Yori back on the road!!