UK Car

UK Car Repair Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

UK Car

I have an early 2004 hyundai Tucson CRDi 4WD. Only owned it

Customer Question
Hi, i have an early...
Hi, i have an early 2004 hyundai Tucson CRDi 4WD. Only owned it for 3 months, but a constant issue with severe low clutch bite and spongy brakes. There is a receipy for gear linkage and new Slave cylinder, but I've bought a genuine clutch Master cylinder too, to no effect.
It has occured to me that in 2005 the clutch master cylinder was replaced entirely on this model This leads me to believe they were a defective unit and replced across the model.
So, firstly i'd like to know if this hydraulic system does have inherent faults from 2004?
I can smell brake fluid, but there is no sign of a leak from either master or slave cylinder, however, I have not been inside the bell housing to for leaks there.
I'm about ready to scrap it as it's becoming increasingly difficult to engage gear or brake effectively, especially when cold.
The system ws beld thru the slave cylinder when the Master was replaced, but no realise there is a correct procedure to bleed this vehicle which i have not yet found.
Can you help?
Thanks
Submitted: 1 year ago.Category: UK Car
Show More
Show Less
Ask Your Own UK Car Question
Answered in 5 hours by:
1/12/2016
UK Auto Mechanic: Matt, Mechanical Engineer replied 1 year ago
Matt
Matt, Mechanical Engineer
Category: UK Car
Satisfied Customers: 22,168
Experience: BEng hons Mech engineering, in auto industry 22 years
Verified

Hello

I'd double check all the unions for tightness on all the joints 1st
Also I'd use a pressure bleeder such as Easibleed to push fluid through to each corner first then use the two person method below to bleed the brakes and clutch

I favour having a clear hose from the nipple to a jar 1/2 full of old fluid and with the nipple closed your assistant pushes the pedal up and down a few times then holds it down then you crack open the nipple and close it again whilst fluid is still flowing.

Repeat this a few times on all calipers and start with the caliper furthest away from the master cylinder.

If you still have an issue then it could be a flexible brake line is ballooning under pressure, this can't always be seen from the outside so to test this use a hose clamp on each line in turn to close off then lines one at time . Push the pedal in between and see if you can feel any difference as each line is closed off.

Ask Your Own UK Car Question
Customer reply replied 1 year ago
Hi, Matt, thank you for your reply. I actully know all of this, plus my close friend is a mechanic of 30 years now. We have tried everything you have suggested, but my question was to do with Hyundai Tucson 2004 specifically, BEFORE they change the Clutch Master Cylinder set up.To re-iterate, the question I want to know is, does this model suffer in term of failing 1st gen clutch master cylinder and hydraulic issues?I can't find any information regarding a change in CMC. It took me 6 weeks to find a genuine part for this car. The clutch pedal feels like it's sticking going down and back up so I'm suspecting a malfunction in the design of the 1st gen early Tucson; hence why it's been changed.Thanks
UK Auto Mechanic: Matt, Mechanical Engineer replied 1 year ago

hello

I have no service bulletins or recalls regarding this part I'm afraid, but I have seen issues with the clutch itself breaking up so it starts to stick mechanically

Ask Your Own UK Car Question
Customer reply replied 1 year ago
I see. The clutch was replaced at 40 thou by previous owner and now has 90 thou on. I've only done 1 thou in it. However, the clutch itself seems fine with no slipping or judder. Just biting about 1cm off the floor, and abviously, spongy brakes.When i say 'sticking' i just mean it's not perfectly smooth going down. It was like this with before i changed the Master cylinder and the new part was sealed. I just think maybe they're defective! Why else have them changed within one year. All other CMC since 2005 have a rubber pipe coming off them. I can only assume the seal could be faulty inside. The same CMC is on the KIA Sportage, and they have been changed also.My only other assumption is a problem inside the bell housing.I'm not really sure how this site works Matt, payment wise, or how many question I can ask, but I have a couple more issues with this motor, namely a knocking or rattle from the alternator/power steering pump area. We replaced the de-coupler pulley already but it wasn't that. Next thought is the alternator or power steering bearing, but it's all money to find it out.All of my questions are really asking for common issues. I'm hoping to narrow symptoms down to typical scenaris to reduce time stripping and changing wrong parts.So, specificall, problems relating to Hyundai Tucson, and not cars in general.Thanks
UK Auto Mechanic: Matt, Mechanical Engineer replied 1 year ago

Hello

the site takes a deposit from you at the beginning and this is held by the site until you rate my answer at which point the cash is split between the site and the expert, but you can ask as many questions on the same post as is required to resolve your issue

now if the clutch cylinder seals are breaking up then typically the fluid will be dark and sludgy as tiny bits of rubber are suspended into the fluid

regarding the spongey brakes may I suggest driving the car for a short distance and hitting the brakes hard enough to trigger the ABS and then re-bleeding the system as sometimes air can be trapped in the ABS pump which then has to be run to shift the air to the caliper

regarding the engine rattle then I'd first try removing the auxiliary drive belt and turning every pulley and ancillary ( power steering pump , alternator etc) by hand. All should turn easily (with the exception of the AC pump) with no grittyness or wobbly pulleys- If you do find a sticky pump / alternator then it should be replaced or repaired

If the engine is stone cold you can briefly run it with no belts to see if the noise changes or has gone away, this will help show if an ancillary is the issue

Ask Your Own UK Car Question
Ask Matt Your Own Question
Matt
Matt
Matt, Mechanical Engineer
Category: UK Car
Satisfied Customers: 22,168
22,168 Satisfied Customers
Experience: BEng hons Mech engineering, in auto industry 22 years

Matt is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Marty

Marty

European Car Expert

407 satisfied customers

ASE & Bosch Certified Master Tech. Over 30 years experience.

Greg

Greg

Shop Owner

1,309 satisfied customers

17 years Shop Owner /Technician. 27 years experience,

Richard

Richard

UK Car Mechanic

611 satisfied customers

12 years as a technician at a Ford and Jaguar dealer Ford and Jaguar factory certified

Matt

Matt

Mechanical Engineer

22,168 satisfied customers

BEng hons Mech engineering, in auto industry 22 years

Trevor

Trevor

UK Car Mechanic

853 satisfied customers

NVQ 3, Modern Apprenticeship, MOT Tester, 15+ years experience diagnostic technician

Rob

Rob

UK Car Mechanic

823 satisfied customers

city and guilds level 1 2and 3. mot tester , 28 years experience set up training college in afghanistan

martin jones

martin jones

UK Car Mechanic

640 satisfied customers

25 years as a mechanic and mot tester, owned own business for 10 years city and guilds trained

< Previous | Next >

Related UK Car Questions
When I turn my there's like a grinding sound and my abs
When I turn my there's like a grinding sound and my abs light is on. I'm thinking its the tone ring. … read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I have a 2005 Jazz and when I start it from cold I can't get
I have a 2005 Jazz and when I start it from cold I can't get it into gear, forward or reverse. But once the engine has warmed up it works as normal. … read more
Greg
Greg
Shop Owner
Vocational, Technical or Trade Scho
1,309 satisfied customers
I have just bought a second hand peugeot 206 cc, just taken
hi, i have just bought a second hand peugeot 206 cc, just taken it to an independant mechanic to check it over as i know nothing about engines!!! When hooked up to the diagnostics computer, it was com… read more
Robert
Robert
Mechanic/Roadside assist/Garage Owner
Vocational, Technical or Trade Scho
1,647 satisfied customers
The abs, stability control and traction control warning
The abs, stability control and traction control warning lights come on in my shogun. Usually it happens at start up or when moving off first thing in morning. After a Mile or so if I switch off and re… read more
Matt
Matt
Mechanical Engineer
22,168 satisfied customers
I have a p021 code on my 2008 g35 sedan. I need to know if
I have a p021 code on my 2008 g35 sedan. I need to know if bank 2 is drivers or passengers side? … read more
Greg
Greg
Shop Owner
Vocational, Technical or Trade Scho
1,309 satisfied customers
I have a new Mini S The onboard computer restarts itself
I have a new Mini Cooper S The onboard computer restarts itself whilst driving Have taken my car in to update software but this has not resolved the issue. Is this a common problem/one you have a fix … read more
Matt
Matt
Mechanical Engineer
22,168 satisfied customers
2006 Ford Transit Connect, the heater airflow control is
2006 Ford Transit Connect, the heater airflow control is jammed, can this be released simply? Do I need a tin opener to get to it? Regards Bran … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I am having starting problems with my 07 plate E320 D, it
Hi, I am having starting problems with my 07 plate E320 D, it takes about 3 or 4 heaters before it starts on relaly cold days, about 2 to 3 for mildly cold days, once started no probs, got it checked,… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I see a spanner comes on when I start d car and dis
I see a spanner comes on when I start d car and dis disappears within seconds … read more
Greg
Greg
Shop Owner
Vocational, Technical or Trade Scho
1,309 satisfied customers
Its not starting. Everythings fine i got error no connection
everythings fine i got error no connection ith sasm module here can i fint it? … read more
Matt
Matt
Mechanical Engineer
22,168 satisfied customers
I need wiring diagrams for Light Module for Laguna Coupe
I need wiring diagrams for Light Module for Laguna Coupe 2009 3.0 … read more
Matt
Matt
Mechanical Engineer
22,168 satisfied customers
Immobiliser seems to be draining the battery. Ticking noise
Ticking noise and lights flash when doors are open … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
I am looking to change the battery on my Nissan prinastar.
I am looking to change the battery on my Nissan prinastar … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
03 Ranger 4.0 4x4. need full vaccume schematic. grey vac
Thank you. 03 Ranger 4.0 4x4 . need full vaccume schematic. grey vac line coming up on heater box sucking air … read more
Cesar Jimenez
Cesar Jimenez
Vocational, Technical or Trade School
3 satisfied customers
My 2003 transit van heater is not working.engine gets up to
My 2003 transit van heater is not working.engine gets up to heat and fan works on 3 settings but no heat coming from heater … read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
Bonjour, je rencontre un soucis avec mes 2 clés de mercedes
Bonjour, je rencontre un soucis avec mes 2 clés de mercedes elle ne commande plus le démarrage de mon véhicule. aucun voyant ne s'allume quant j'actionne la clé. … read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
I have a 2007 base model mini.the yellow check engine light
I have a 2007 base model mini.the yellow check engine light is on. its running very rough. code says #2 cylinder miss. I changed the plugs and found dark fluid around base of plugs on #2 cylinder and … read more
Marty
Marty
European Car Expert
Associate Degree
407 satisfied customers
My car won't start on the code I was gaven. Some are and we
Some are and we have clean them up and still no good … read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x