New cylinder head
Author
Discussion

purplepolarbear

Original Poster:

487 posts

198 months

Friday 19th October 2018
quotequote all
I've been told that I need a new cylinder head on my Peugeot RCZ.

I had an engine management light come on and took it to the main dealer. They have changed spark plugs, coils and the fuel pump and I'm now told when they road tested this, the engine light came on again with a different code and it needs a new cylinder head.

They have quoted me about £4900 (including fitting and VAT), which is about what the car is worth as a trade-in. About £2200 of this is for the head itself, various other bits and 10 hours of labour.

The car has done about 80K miles and is otherwise good, and I like it when it is working.

What would you suggest (I'm thinking I should get rid of the car, rather than attempt to fix it as if I fix this, other issues will emerge soon). If there is an alternative such as repairing the existing cylinder head or replacing the engine with a low mileage reconditioned one that will be significantly cheaper and reasonably likely to work without a problem for another 50K miles however I'd like to investigate this.


cheesesliceking

1,577 posts

264 months

Friday 19th October 2018
quotequote all
Almost every other option you could possibly pick will be considerably cheaper than taking it to a Peugeot main dealer.

Haltamer

2,632 posts

104 months

Friday 19th October 2018
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Hmm, Sounds like the problem might be the main dealer IMO - Sounds like they are playing the "Replace whatever might be causing this code" game, which isn't so bad in warranty, but is obviously not the best approach when you are paying for parts and labour.
It may be worth getting a specialist to take a look before you write it off.

rigga

8,798 posts

225 months

Friday 19th October 2018
quotequote all
RCZ, and the mini JCW suffer from coking up on the inlet valves due to being a direct injection engine, this can cause missfires and codes being generated, I'm sure a main dealer will have discounted this in their fault finding, but seeing as a lot of mini dealers do not know about de coking the valves by walnut blasting them, maybe Peugeot are as informed? Bit mistified why they are suggesting a head exchange .

purplepolarbear

Original Poster:

487 posts

198 months

Friday 19th October 2018
quotequote all
Thank you for the replies - I'll see if I can find an independent garage who can take a look first and give me a second opinion.

That's interesting about walnut blasting and I hadn't come across this before. Hopefully it could be something simple like this.- I have been doing a lot of driving in slow moving traffic recently. How much is it likely to cost to find out if this is likely to be helpful?

Ron99

1,985 posts

105 months

Friday 19th October 2018
quotequote all
rigga said:
RCZ, and the mini JCW suffer from coking up on the inlet valves due to being a direct injection engine, this can cause missfires and codes being generated, I'm sure a main dealer will have discounted this in their fault finding, but seeing as a lot of mini dealers do not know about de coking the valves by walnut blasting them, maybe Peugeot are as informed? Bit mistified why they are suggesting a head exchange .
Yes, coked valves was the first thing that came into my mind.

Elliot2000

786 posts

200 months

Friday 19th October 2018
quotequote all
Get a detailed description as to what they are saying is wrong with the cylinder head and a list of fault codes

PaulKemp

979 posts

169 months

Friday 19th October 2018
quotequote all
There is no OBD engine code that says “Replace cylinder head”
Engine codes don’t show mechanical failure only electronically measured perameters.
There are very few reasons to swap out a cylinder head and many ways to recover a cylinder head that are cheaper than buying a new one.

It does worry me the amount of so called main dealers that just swap stuff out knowing they are ripppng off the punter who has little knowledge.

stevieturbo

17,970 posts

271 months

Friday 19th October 2018
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Holy fk...this place gets worse on a daily basis ( and I know it isnt the OP making the claims )

What in the name of fk are they saying is wrong that you need a new cylinder head, especially as you're giving no real history of any problems prior to this whopper !!

purplepolarbear

Original Poster:

487 posts

198 months

Friday 19th October 2018
quotequote all
Sorry. I should have explained the faults more clearly.

Occasionally the engine was running roughly. Sometimes the management light came on and the car's power was reduced. It could still keep up with motorway traffic. Power was normal when the engine was restarted and the light cleared a few days later.

Also especially when cold there was a stutter on accelerating (most noticeable in high gears).

They changed the spark plugs and coils. The light came on again. They say they changed the fuel pump and it came on in a road test after that. I should get the car back on Monday. I'll see if I can get hold of an obd reader and post up any codes when the light comes on again.

Evoluzione

10,345 posts

267 months

Friday 19th October 2018
quotequote all
Elliot2000 said:
Get a detailed description as to what they are saying is wrong with the cylinder head and a list of fault codes
Agree with this. Ask them to explain with some precision exactly what it is that requires them to replace the head, if you know someone who understands how an engine works take them with you.

PositronicRay

28,641 posts

207 months

Saturday 20th October 2018
quotequote all
Evoluzione said:
Elliot2000 said:
Get a detailed description as to what they are saying is wrong with the cylinder head and a list of fault codes
Agree with this. Ask them to explain with some precision exactly what it is that requires them to replace the head, if you know someone who understands how an engine works take them with you.
Remember if someone cannot explain something simply, so a lay person can understand, they don't really know themselves.

E-bmw

12,372 posts

176 months

Saturday 20th October 2018
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PositronicRay said:
Remember if someone cannot explain something simply, so a lay person can understand, they don't really know themselves.
Clearly very true. I like that one. wink

PeterBurgess

775 posts

170 months

Saturday 20th October 2018
quotequote all
E-bmw said:
PositronicRay said:
Remember if someone cannot explain something simply, so a lay person can understand, they don't really know themselves.
Clearly very true. I like that one. wink
Nicely written and oh so true

Evoluzione

10,345 posts

267 months

Saturday 20th October 2018
quotequote all
Yes, but it also takes one to know one. If you don't have any depth of knowledge on a subject it's difficult (but not impossible) to know whether you're being served a pile of bull or not.
It could well be a cracked gangle pin on the main glibshaft which has contra-rotated and damaged the head wink

steveo3002

11,075 posts

198 months

Saturday 20th October 2018
quotequote all
sounds like the sort of garage you should never use again

oh yes we tried plugs but it needs a new head? ..doesnt sound right at all

PositronicRay

28,641 posts

207 months

Saturday 20th October 2018
quotequote all
Evoluzione said:
Yes, but it also takes one to know one. If you don't have any depth of knowledge on a subject it's difficult (but not impossible) to know whether you're being served a pile of bull or not.
It could well be a cracked gangle pin on the main glibshaft which has contra-rotated and damaged the head wink
If after an explanation you're still confused, (or understand cannot what a glibshaft does) then the explainer doesn't know their subject.


An expert can break down the most complicated subject into principles that can be explained and understood. eg Brian Cox.

PeterBurgess

775 posts

170 months

Saturday 20th October 2018
quotequote all
Evoluzione said:
Yes, but it also takes one to know one. If you don't have any depth of knowledge on a subject it's difficult (but not impossible) to know whether you're being served a pile of bull or not.
It could well be a cracked gangle pin on the main glibshaft which has contra-rotated and damaged the head wink
This thread shows PH at it's best, giving experience to folk asking for input. By virtue of purplepolarbear asking (writing?) he has a virtual, composite knowledgeable person standing alongside when he goes and sees the dealers or takes his car elsewhere.

PeterBurgess

775 posts

170 months

Saturday 20th October 2018
quotequote all
PositronicRay said:
If after an explanation you're still confused, (or understand cannot what a glibshaft does) then the explainer doesn't know their subject.


An expert can break down the most complicated subject into principles that can be explained and understood. eg Brian Cox.
The sad thing about this is that whilst it is true for Brian Cox and many others there is no 'I am telling the truth' light on peoples heads, so, lying barstewards can use the gift of the gab and charisma to railroad folk down false paths and rob them blind frown

PositronicRay

28,641 posts

207 months

Saturday 20th October 2018
quotequote all
PeterBurgess said:
PositronicRay said:
If after an explanation you're still confused, (or understand cannot what a glibshaft does) then the explainer doesn't know their subject.


An expert can break down the most complicated subject into principles that can be explained and understood. eg Brian Cox.
The sad thing about this is that whilst it is true for Brian Cox and many others there is no 'I am telling the truth' light on peoples heads, so, lying barstewards can use the gift of the gab and charisma to railroad folk down false paths and rob them blind frown
Unfortunately true.