im Axle Specialists

Technical 100HP Slow cranking

Currently reading:
Technical 100HP Slow cranking

Gavv8

Gavv8

Trekking multijet
Parked in the garage
Joined
Aug 5, 2013
Messages
1,816
Points
358
Location
Devon
The last few days my 100hp seems to to crank over a lot slower than it used to, it starts fine but the dash display also seems to take a few seconds to come on...checked the battery and its fine and i haven't disturbed anything else that could causing a problem....Ideas anyone? or is it probably just the starter on its way out, mileage is 82000.
 
Check your earth and starter lead(s). Could be oxidised connections or degrading internally.
Otherwise, could still be battery - they have been know to test OK but still underperform.
 
You need to measure the battery volts while its cranking the engine.

Much below 11V while its cranking suggests a problem.
 
Yep it was the battery, showed as fully charged and its only two years old but substituted it for the old one that i'd kept trickle charged in the garage and it fired straight up.... so new battery on saturday will be an Exide one and NOT a Yuasa.
 
Gavv8 said:
Yep it was the battery, showed as fully charged and its only two years old but substituted it for the old one that i'd kept trickle charged in the garage and it fired straight up.... so new battery on saturday will be an Exide one and NOT a Yuasa.
Click to expand...

Glad you've got it sorted without too much hassle.

Yuasa used to have a very good reputation for motorcycle batteries; I've no experience of their car batteries, but I'm surprised yours has failed so quickly. Either it's a one-off, or they really don't make 'em like they used to. I can understand you not wanting to buy another, though.
 
Ive had Hausa batteries last for ages so something isn't right. Sometimes one cell fails (in any battery) so maybe that's what's happened here.

I'm looking forwards to when we have Lithium batteries some are stunningly powerful in a small size AND they don't degrade when left standing. But for now they are still too costly.
 
Yuasa certainly used to be OK. Could just be you got a dodgy one.

I've been using Bosch S4 063s as they are cheap but good. Seem to be lasting well so far.
 
If you have the small cube battery, consider going for the larger rectangular type. They usually cost less than the diddy one.

If you want top tech check out Shorai batteries.
 
DaveMcT said:
Ive had Hausa batteries last for ages so something isn't right. Sometimes one cell fails (in any battery) so maybe that's what's happened here.

I'm looking forwards to when we have Lithium batteries some are stunningly powerful in a small size AND they don't degrade when left standing. But for now they are still too costly.
Click to expand...

They also have a habit of exploding in flames, as Boeing and others have found out. I'll stick with lead acid thanks.

Robert G8RPI.
 
Lithium batteries work well in power tools and phones. Perfectly ok in every phone I've owned though Samsung have struggled recently.

LiFePo is the type for starter batteries. They are dry cells so less risk of leakage but any battery including lead acid is at risk if short circuited. The issue with Boeing was a small battery to save weight that couldn't cope with the demands.

My bike has a lead acid battery but when that packs up I'm going for a Ballistic or Shorai. TBH less point in a car as its a smaller overall percentage in weight or space.
 
Last edited:
DaveMcT said:
<SNIP>

The issue with Boeing was a small battery to save weight that couldn't cope with the demands.

<SNIP>.
Click to expand...

Actually size was not an issue with the 787 batteries. There were 3 main issues (this is typical for an accident, google James Reason Swiss Cheese)
1/ Charger was producing voltage spikes
2/ Rectangular cells were produced by winding on a round mandrel and then squashing them by hand causing damage to the seperators.
3/ They put vented cells into a sealed metal case promoting thermal runaway between cells. This was despite a clear certification requirement for venting.

Robert G8RPI.
This is my personal opinion and does not nesessarly reflect the views of my employer.
 
g8rpi said:
Actually size was not an issue with the 787 batteries. There were 3 main issues (this is typical for an accident, google James Reason Swiss Cheese)
1/ Charger was producing voltage spikes
2/ Rectangular cells were produced by winding on a round mandrel and then squashing them by hand causing damage to the seperators.
3/ They put vented cells into a sealed metal case promoting thermal runaway between cells. This was despite a clear certification requirement for venting.

Robert G8RPI.
This is my personal opinion and does not nesessarly reflect the views of my employer.
Click to expand...

Thanks for that. The point is it wasn't battery chemistry at fault. I personally think lead acid is old tech that should have gone out long ago, But it does the job so no pressure to upgrade Maybe the new stop start cars will be moving to more efficient batteries. Some small cars have huge batteries these days.
 
You must log in or register to reply here.

Similar threads

Z
Technical Gearstick centering a bit slow
Replies
9
Views
413
dagdromer
D
koalar
Technical Turn key and it's not cranking
Replies
0
Views
322
koalar
koalar
TheGreenMachine
Technical 100hp Drive Shafts
Replies
6
Views
219
koalar
koalar
TheGreenMachine
General Panda 100hp Rear Axle Woes
Replies
4
Views
264
rmjbn1
rmjbn1
Little Demon
General Parts help - Panda 100hp
Replies
2
Views
629
Little Demon
Little Demon
Back
Top