A Bit Of Cold And It Wont Start?

ACEngineering

Member
Location
Oxon
I've got one and it's a bugger to start.when cold , I put a charger on it when left for any amount of time. It leaks charge if left ,always has done.
With a fully charged battery , it needs the glow plugs on 2 or 3 times then turns over so slow uou think it's not going to start then off she goes.
Occasionally it needs a boost as well if really cold .

you will find if you fit a decent starter so it cranks easier and faster it will start with out heat most times, a direct injection needs a decent cranking speed to generate the heat on compression to ignite the fuel.
 

tepapa

Member
Livestock Farmer
Location
North Wales
Hello

Happy to sort you out a decent starter motor for it like i have done many others on here. (y)

Just send me a PM with invoice details and i will sort it
What details do you require to get the correct part? I need a starter for a fiat 50-66 but I'm no mechanic so no idea what part number etc to ask for. Can you look it up from the model?
 

ACEngineering

Member
Location
Oxon
Changed it a few times, never seem to last from one winter to the next. The extra fuel button helps at borderline temps.

Cranking speed is what you need to improve and the best way to do that once leads are clean and battery is good is simply replace the starter with a BETTER one and i do not mean another Lucas type, they are a waste of time and money these days.
 

Zac

Member
Mixed Farmer
Be careful to check the specs of a new battery. There is a lot of different quality ones out there. Plenty of battery suppliers will sell you for instance a brand new "type 643" battery, but look at the CCA (cold cracking amps) a battery like Numax is about 600 CCA which is fine on a nice summer's day, but wouldn't start your alarm clock in the frost. A JCB battery is approx 1000CCA, nearly double the battery power on a cold day.
 

ACEngineering

Member
Location
Oxon
Be careful to check the specs of a new battery. There is a lot of different quality ones out there. Plenty of battery suppliers will sell you for instance a brand new "type 643" battery, but look at the CCA (cold cracking amps) a battery like Numax is about 600 CCA which is fine on a nice summer's day, but wouldn't start your alarm clock in the frost. A JCB battery is approx 1000CCA, nearly double the battery power on a cold day.

You are correct BUT your not compairing a 643 Numex to a jcb 643, if you were they would be about the same.

Your compairing a 643 to a 642 I suspect, two very different batteries and you don't have to buy a jcb branded 642 to get 1000cca, exact same battery comes with sparex or new holland labels and probably a few others too, that's because there all supplied by UK batteries just with different branded labels.
 

Timbo

Member
Location
Gods County
You are correct BUT your not compairing a 643 Numex to a jcb 643, if you were they would be about the same.

Your compairing a 643 to a 642 I suspect, two very different batteries and you don't have to buy a jcb branded 642 to get 1000cca, exact same battery comes with sparex or new holland labels and probably a few others too, that's because there all supplied by UK batteries just with different branded labels.


IME, the numax branded batteries are about as good as a pp3 9v, as are the wynstay or banner or lion branded efforts. Might be ok on a fiesta for 12months but little else. You've only got to weigh one to realsie.
 

Zac

Member
Mixed Farmer
You are correct BUT your not compairing a 643 Numex to a jcb 643, if you were they would be about the same.

Your compairing a 643 to a 642 I suspect, two very different batteries and you don't have to buy a jcb branded 642 to get 1000cca, exact same battery comes with sparex or new holland labels and probably a few others too, that's because there all supplied by UK batteries just with different branded labels.
That's good to know, always suspected jcb probably never made there own batteries, but as they always seem to work and I can get hold of them, I never bothered digging deeper into it. (Don't fix what isn't broken) Sparex would most likely be easier again to get hold of. 👍
 

AlCapone

Member
Have you checked fan belt?
In our farming days we had John Deere 2040 , poor starting was traced to a faulty starter solenoid running battery down
New batteries should be charged before fitting
When was air filter changed last
When was engine oil changed?
Scraper tractors tend to be neglected
That’s about it
 

DKnD

Member
Livestock Farmer
Location
Exmoor
Worth checking the connection between solenoid and motor on the starter motor. Sorted ours out. Only had a few corroded washers but much better now.
 

David.

Member
Mixed Farmer
Location
J11 M40
68907877-bay-horse-lying-in-the-sand-and-dust.jpg
 
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Speedstar

Member
Location
Scottish Borders
Cranking speed is what you need to improve and the best way to do that once leads are clean and battery is good is simply replace the starter with a BETTER one and i do not mean another Lucas type, they are a waste of time and money these days.
Do you do high speed starters for Merlos have customer with an all most new one with deutz engine & its a pig to start if its - at all
 

ACEngineering

Member
Location
Oxon
Do you do high speed starters for Merlos have customer with an all most new one with deutz engine & its a pig to start if its - at all

I would expect it to already have the 4.2kw mahle fitted tbh, manitous with deutz had the 4.2kw one fitted from new although early ones 2014 to end of 2016, there was a mod to a fully sealed starter as the dust was getting in the gear and stopping them sliding in to mesh.
It was however still the same 4.2kw just a different gear arrangement on the end.

Do you have any details off the old starter? Will have a deutz label on it with part number or a merlo part number and then I can look it up to see.
 

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