Technical  Diesel Battery analysis

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Technical  Diesel Battery analysis

We are from the same era Mike and seem to have very much the same experience and approach to our cars - although you have more time in on heavier stuff. I really never got involved in anything bigger than a Transit/LDV van. So pretty much all running gear similar to cars, although occasionally I'd run into a fully floating rear wheel bearing on twin rear wheel vans. Mind you, way back when, I seem to remember the morris minor had a semi floating setup on the rear didn't it? (ie, just one bearing but mounted to the outside of the axle tube? Oh dear, the memory is dim these days.

Oh I know that one, happens to me all the time. I can walk right past something and only notice it on the way back to the door! I like the looks of your big red tester and the fact it's load adjustable. I've been saving for something like the Topdon BT200 https://eu.topdon.com/en-gb/product...5NiDgCwXCyurRpvA09GvJIG2f9aL14P5Gl5HnEVjz_xAA They also make the cheaper BT100 but it doesn't get such a good review. No colour display and has a lower spec whilst not being all that much cheaper. Grant at Gendan is tempting me to buy the Foxwell BT715: https://www.gendan.co.uk/product_FXBT715.html with a bit of extra discount last time I enquired, which seems to be a similar quality/spec product.

I've been very pleased with the Ring Smart Battery charger I bought last year. I think I see your analyser is a Ring? how do you like it and what, if you don't mind telling me, did it cost. I really don't need an attached printer of course.
Years ago I sold a mate a 1955 Morris Minor with the early spikes to locate the hub caps ( weaker wheels) he fitted some massive 14 inch tyres from somewhere on the standard rims, some thing broke and he had a rear wheel pass him, so I am not sure if it was the semi floating hub failing or the wheel rim breaking a way from overload, he wasn't what I would call mechanically sympathetic.;)
Just looked up similar battery tester to mine but with printer £182!!! I am sure I paid less than half that.:(
 
Please Can someone else say if Dpf only needs higher revs when the dpf warning light comes on until light goes out, thanks.
 
Hi Jock,

Heavy current draw load testers were at one point all the rage and pretty much all that was available. I found/find that disable the engine starting and cranking on starter for 10 seconds while watching voltage drop(analog volt meter good for this) performs similar function while current draw of starter better matched to battery spec.

The digital testers can be good but oddly can condemn an apparently perfectly performing battery as bad replace.

Best
Jack
That was the other way with old screw top batteries crank the engine almost to a standstill and if one cell started to bubble battery was duff, if they all did then usually just needed a charge. Bit primitive by today's standards.;)
 
Hi Jock,

Heavy current draw load testers were at one point all the rage and pretty much all that was available. I found/find that disable the engine starting and cranking on starter for 10 seconds while watching voltage drop(analog volt meter good for this) performs similar function while current draw of starter better matched to battery spec.

The digital testers can be good but oddly can condemn an apparently perfectly performing battery as bad replace.

Best
Jack
Thanks Jack. Yes, cranking with the ignition disabled - or now a days better to pull the fuel pump relay I'm told - is something I've done many a time. Of course with your trusty analogue voltmeter across the battery terminals. I think an analogue meter is pretty much essential for this sort of thing. Hadn't thought about the current draw being more meaningful when powering the specified motor, but you're right. Trouble is it tails away as the IC engine spins up? Still a good and valid test though.

Interesting you mention that about digital analysers. I've read a few reviews warning of exactly that, especially on the cheaper products not surprisingly.
 
Can anyone else say if Dpf only needs higher revs when the dpf warning light comes on until light goes out
On my daughters 2010 1.6 VW Gold diesel I put a full can of DPF cleaner in the tank and went for a 30 mile trip in 4th gear at 60 mph roughly 3500rpm and that cured it for another few months, she mostly did stop start town work. her normal driving was change up at 1500rpm.
 
Thanks Jack. Yes, cranking with the ignition disabled - or now a days better to pull the fuel pump relay I'm told - is something I've done many a time. Of course with your trusty analogue voltmeter across the battery terminals. I think an analogue meter is pretty much essential for this sort of thing. Hadn't thought about the current draw being more meaningful when powering the specified motor, but you're right. Trouble is it tails away as the IC engine spins up? Still a good and valid test though.

Interesting you mention that about digital analysers. I've read a few reviews warning of exactly that, especially on the cheaper products not surprisingly.

Spinning up good point but that is what would occur during start attempt. On a petrol throttle could be fully opened to increase resistance to rotation and so current draw.
 
On my daughters 2010 1.6 VW Gold diesel I put a full can of DPF cleaner in the tank and went for a 30 mile trip in 4th gear at 60 mph roughly 3500rpm and that cured it for another few months, she mostly did stop start town work. her normal driving was change up at 1500rpm.

To me that Sounds a kinder and more efficient idea than artificially keeping the revs high all the time.
 
Please Can someone else say if Dpf only needs higher revs when the dpf warning light comes on until light goes out, thanks.
On my daughters 2010 1.6 VW Gold diesel I put a full can of DPF cleaner in the tank and went for a 30 mile trip in 4th gear at 60 mph roughly 3500rpm and that cured it for another few months, she mostly did stop start town work. her normal driving was change up at 1500rpm.
I haven't noticed any of late but it used to be a regular site to see a VAG diesel sitting out on the extensive forecourt of the big dealer near me with it's engine running quite fast and no-one behind the wheel. After having seen this a few times I walked over and looked in to see a laptop on the driver's seat plugged into the diagnostic port. I stuck my head round the workshop door and, politely, asked what was going on. Forced DPF Regen I was told. either they are hiding them round the back now, or it's not such a problem, or, more likely, just less diesels? Can't stick my head round the workshop door either ever since they went "All Posh" and the reception boys and girls wouldn't know what i was talking about even if I asked.
 
I haven't noticed any of late but it used to be a regular site to see a VAG diesel sitting out on the extensive forecourt of the big dealer near me with it's engine running quite fast and no-one behind the wheel. After having seen this a few times I walked over and looked in to see a laptop on the driver's seat plugged into the diagnostic port. I stuck my head round the workshop door and, politely, asked what was going on. Forced DPF Regen I was told. either they are hiding them round the back now, or it's not such a problem, or, more likely, just less diesels? Can't stick my head round the workshop door either ever since they went "All Posh" and the reception boys and girls wouldn't know what i was talking about even if I asked.
I prefer to do a Regen on the road, I feel it is kinder on the engine.
I agree it is impossible to speak to a mechanic in a dealership these days and I get really annoyed listening to BS from some prat at reception talking as though they know everything.:mad:
 
I haven't noticed any of late but it used to be a regular site to see a VAG diesel sitting out on the extensive forecourt of the big dealer near me with it's engine running quite fast and no-one behind the wheel. After having seen this a few times I walked over and looked in to see a laptop on the driver's seat plugged into the diagnostic port. I stuck my head round the workshop door and, politely, asked what was going on. Forced DPF Regen I was told. either they are hiding them round the back now, or it's not such a problem, or, more likely, just less diesels? Can't stick my head round the workshop door either ever since they went "All Posh" and the reception boys and girls wouldn't know what i was talking about even if I asked.

It's a real shame you can no longer sneak round back, technicians need nice human contact too and parts people too.

The forced regens are all done out back, god forbid driver sees that vehicle actually needs to be maintained!
 
It's a real shame you can no longer sneak round back, technicians need nice human contact too and parts people too.

The forced regens are all done out back, god forbid driver sees that vehicle actually needs to be maintained!
Easier to cover up when it goes bang or seriously overheats.:(
Re talking to the mechanics I recall a customer came in the workshop and asked our genuine advice re buying a Lada, so we told him and then that ars*hole went across the road to the showroom and told the boss! He came back steaming, we stood our ground and said we are not going to lie.
In the end we came to an agreement where if asked we would say "it represents good value for money" as in, if you pay F all you get F all.;)
 
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Please Can someone else say if Dpf only needs higher revs when the dpf warning light comes on until light goes out, thanks.
Being some distance from where I can ensure a sufficiently long run at high revs for a full regen, I'm not sure if I could could get there before it goes into limp mode once the warning light comes on.....
 
I prefer to do a Regen on the road, I feel it is kinder on the engine.
Yes, they do get bloody hot and out on the road you've at least got air flowing past. Do you remember the scare stories about catalytic converors setting fire to farmers fields when they were first adopted? Beware where you stop for your picnic I remember being one of the "stories".
I agree it is impossible to speak to a mechanic in a dealership these days and I get really annoyed listening to BS from some prat at reception talking as though they know everything.:mad:
I wouldn't mind if they would just acknowledge that you do at least know what you're talking about instead of the almost universal assumption that you know nothing. Sometimes, although they are always polite and friendly, I absolutely cringe at what some poor "non technical" person beside me is being told. There's no point in opening your mouth so I just stand and listen to the "entertainment".
 
Spinning up good point but that is what would occur during start attempt. On a petrol throttle could be fully opened to increase resistance to rotation and so current draw.
On older engines absolutely. Not so sure where the throttle butterfly is motorised? Maybe need to physically chock it open? I'm only guessing though.
 
Easier to cover up when it goes bang or seriously overheats.:(
Re talking to the mechanics I recall a customer came in the workshop and asked our genuine advice re buying a Lada, so we told him and then that ars*hole went across the road to the showroom and told the boss! He came back steaming, we stood out ground and said we are not going to lie.
In the end we came to an agreement where if asked we would say "it represents good value for money" as in, if you pay F all you get F all.;)
A similar situation could easily have arisen when we packed in the DAFs and, after failing to secure the Alfa dealership, took on Polski Fiat. I felt far too much loyalty to the small family garage to have said anything to damage their reputation but that didn't stop me from being "unenthusiastic" about the product and keeping my mouth shut most of the time.
 
It's a real shame you can no longer sneak round back, technicians need nice human contact too and parts people too.

The forced regens are all done out back, god forbid driver sees that vehicle actually needs to be maintained!
I suppose there's situations like this, or, say when you need to "intelligently" hit something very hard with a big hammer, where it's better for the customer not to be aware? Also big workshops are very aware of times. The men's time was possibly the most important thing, especially if your shop worked bonus - Dear God, I learned to hate bonus working, one of the biggest contributors to shoddy workmanship I know! Even back in my day job times were everything - remember the ICME manual folks? If a mechanic - I don't believe most deserve to be called Technicians - isn't on a job it's perceived as an arch crime! So no distractions permitted.
 
Being some distance from where I can ensure a sufficiently long run at high revs for a full regen, I'm not sure if I could could get there before it goes into limp mode once the warning light comes on.....
If light comes on telling you it is doing a Regen try just keeping one gear lower than normal whilst you head to somewhere, normally the engine needs to be up to normal running temp/middle of gauge, the main thing is not to shut it down in the middle of doing Regen. Personally the addition of DPF cleaner additive in the fuel I find helps, just half a bottle with a tank of fuel. I am talking about older diesels not with Adblue and all the other more modern emission set ups. So probably pre Euro 6 type stuff.
 
Yes, they do get bloody hot and out on the road you've at least got air flowing past. Do you remember the scare stories about catalytic converors setting fire to farmers fields when they were first adopted? Beware where you stop for your picnic I remember being one of the "stories".

I wouldn't mind if they would just acknowledge that you do at least know what you're talking about instead of the almost universal assumption that you know nothing. Sometimes, although they are always polite and friendly, I absolutely cringe at what some poor "non technical" person beside me is being told. There's no point in opening your mouth so I just stand and listen to the "entertainment".
I used to be the same listening to people in the pub say they had "serviced " their cars and saved loads over the garage prices, until I asked did you do this did you fit new that etc. When the answer was no , I used to say, to "Not much of a f ing service then":) Mind you with all the menu type services you get these days at Dealers I find unless they have had every service done according to the service book many miss items along the way.
If a new customer asked me how much for a service I used to ask what do you want doing, a cheap oil, filter and levels under the bonnet, or a proper full service, which in the old days was plugs,points, tappets, timing, engine and filter, gearbox and axle levels, brakes off and inspect, steering,suspension, tyres checked, lights checked, oil the door locks and hinges, road test which I used to charge 3 hours labour plus materials. I would also contact the customer if I saw anything else that needed doing to get their decision. These days the service only seems to include what is on the menu and the mechanic does just that as he is on a bonus scheme that if he spends any longer affects his earnings, where I could be flexible enough to squeeze any extra work in at the same time saving the customer more labour stripping it down again if they agreed and if not I would make a note on their invoice of what I had found for them to decide later, but no one could say I had missed something.
I will say my regular customers would happily say go ahead if for instance I noticed a brake cylinder starting to leak and before it got on the brake shoes so saving them extra cost. I could always justify anything I said needed doing and if as in one case the husband picked up the phone and accused me of trying to pad out the bill I was happy for him to come down and inspect whilst the brakes or whatever were still stripped down so they could see for themselves and then their wife would lay in to them and tell them to keep their nose out as they trusted me.:)
 
I suppose there's situations like this, or, say when you need to "intelligently" hit something very hard with a big hammer, where it's better for the customer not to be aware? Also big workshops are very aware of times. The men's time was possibly the most important thing, especially if your shop worked bonus - Dear God, I learned to hate bonus working, one of the biggest contributors to shoddy workmanship I know! Even back in my day job times were everything - remember the ICME manual folks? If a mechanic - I don't believe most deserve to be called Technicians - isn't on a job it's perceived as an arch crime! So no distractions permitted.
The black manual.:) we used to argue those times were set on a brand new clean vehicle and probably with an apprentice assisting, unlike us working on a filthy rusty car years old bolts all seized and with no assistance. I was grateful never to have worked to a bonus scheme.:)
 
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