Technical another MOT failure

[ed4ferrets]

My daughter's Cinq Sporting failed and 2 of the items bother me. I've done a search and found this from 2008 which matches my first question:

Originally Posted by mejdmejd
10/11/ Both rear brakes recording no effort

"Thats about standard and is a service item" response I think was by Rallycinq.


Not sure what this meant and what the cure would be?





The other item is as follows:

"Exhaust emissions hydrocarbon content after 2nd fast idle excessive"


The mechanic said there was a misfire and it could be just a dodgy sparkplug or more sinisterly a burnt valve!!



I haven't driven another Sporting to compare but I reckon it does not pull very well or rev very freely and is heavy on juice compared to a n/a Uno I drove recently in South Africa at high altitude!!


Comments gladly received please and apologies if this has previously been flogged to death on the forum!!

Cheers
Ed

 

[rallycinq]

Rear brakes require a service, most often they are forgotten.

When were the brakes last serviced?

When was the car last serviced. and which service did it have?

Cheers

SPD

 

[ed4ferrets]

Ebay find, around 6 months ago. According to service record shoes and pads replaced around Dec 2008, cam belt done at the same time. No cambelt covers on it for some reason!!

Don't know how much actual servicing went into it though

Cheers

Ed

 

[rallycinq]

Ebay find, around 6 months ago. According to service record shoes and pads replaced around Dec 2008, cam belt done at the same time. No cambelt covers on it for some reason!!

Don't know how much actual servicing went into it though

Cheers

Ed

Explains everything really. Look like its been fixed when something has failed rather than serviced.

Give it some TLC, it will reward you.

In the meantime, missfire. Open the bonnet at night with the engine running. Look for random flashes.

Leads are prone to failure.

Cheers

SPD

 

[ed4ferrets]

Just went out and ran the engine, no sparks that I could see.

I guess what I had thought was a nice burble from the exhaust is actually a missfire. New leads and plugs are probably in order then!

What sort of servicing would the rear brakes need, is there perhaps a guide that I have missed somewhere on the site?

Cheers

Ed

 

[whitz]

if its a rather high mileage do the shoes (of course), cant remember the name for them but the small bar and compressible spring type piece of metal that holds the shoes to the backing plate, was taking some rears apart earlier and i found they had rusted and partly gone

 

[richydraper]

rear brakes are quite easy i found...

release handbrake
jack up the car
wheel off
in the drum is a little hole... look through it and find the toothed cog (about 11 o'clock) and turn it anticlockwise as far as required to get the drum off a bit of gentle persuasion might be required with a hammer on the drum (dont be tempted to pry it off against the backplate you will bend it and thats not good)
pull the drum off now you will see the brake shoes
remove the springs that attach each shoe to the other
remove the adjuster (the bar that has the toothed cog at one end)
remove the handbrake mechanism
now remove the "half twist clips" that secure each shoe to the backplate
remove the shoe

if theres enough lining left on the shoe (2mm+) rough up the surface on the shoe and also on the drum with some 80/120 emery (if there is a lip on the inner edge of the drum remove this completely with an angle grinder/die grinder)

lubricate all moving pivot points and the adjuster put a small dab of high temp grease (molybdenum) on the wheel cylinder and the static pins at 3, 6 and 9 o'clock

rebuild in reverse of dismantling

TIP:- before putting the drum back on adjust the brakes so that the shoes just clear the drum then you wont have to adjust up as much through that crappy little hole in the drum.

IIRC thats it, if ive missed anything then im sure someone will correct me!

HTH!

 

[rallycinq]

rear brakes are quite easy i found...

in the drum is a little hole... !

Not in a Cinq. Friction adjusters.

Its usually the actuators. Details in the FAQS.

https://www.fiatforum.com/cinquecento-seicento-faqs/93876-cinq-sei-handbrake-issues.html

Cheers

SPD

 

[ed4ferrets]

Thanks guys. Just to clarify any possible confusion, handbrake effectiveness was borderline so the fail was due to the minimal effectiveness of the rear brakes when applying the footbrake. Could this have other implications other than needing a brake service, blockage maybe or faulty pressure limiter valve?

 

[fingers99]

Usually not. While you're in/under though, check that the slave cylinders work and don't leak (they're very cheap) and that the rear flexi hoses don't bulge. A good brake bleed and new fluid is always a good idea.

 

[purf]

Hi

Seeing as the rear brakes suppost to have been replaced almost 'last year', and if the front brakes work well, and the handbrake works. You might have sticky rear brake cylinders.

The cylinders might just need cleaning & freeing up manually, meaning you dont have to rebleed the brake system. Or you could just get them replaced for new ones.

Seeing as the handbrake works - which is very rare for a cinq which has not been serviced - id say it could be the rear brake cylinders.

You could always try the old, reversing and braking hard technique found to work by some...

 

[BlueDan]

While they are apart take the little levers out (two strips of metal joined together, one with a plastic sleeve on it) and see how free they are, if required work them back and forth spraying WD40 (other sprays are available) in now and then until they loosen up, or even renew them. Quick job and it might help prevent issues with the handbrake not fully releasing later on.

rear brakes are quite easy i found...
in the drum is a little hole... !!

Not in a Cinq. Friction adjusters.

Don't forget refitting the springs, lots of swearing and heaving with various pliers, screwdrivers, etc.

 

[ed4ferrets]

Thanks for all input. With a tricky back and no shelter to work under, probably best to have a good service done then.

Any suggestions for an honest mechanic around Chippenham (Wilts), Bristol, Bath who knows his Fiats...?