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My Peugeot 508 1.6 petrol engine 2012 sedan carbon builds up on values. My question is how can I clean the carbon

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  • Peugeot Master
  • 49,197 Answers

Fix the reason for the carbon in the first place
it is excessive fuel or oil consumption
as to cleaning carbon off the valves , there are very few products that will do that
you can ask specialist engineering shops for products that may work but the real fix is to pull the head and clean the valves and fix the reason the caused the problem

Posted on Dec 23, 2016

Testimonial: "Thank you Bill but this car doesn't use excessive fuel or oil I have been using BP 98 as was the instructions from the dealer but after 55,000km the engine failed"

  • Bill Boyd Dec 27, 2016

    there is a problem with the peugeot engines as I have heard of a few failing early in their life
    2012 vehicle is 4 years and that is only on average 12,000 lkm per year so I would be taking it up with peugeot head office.
    regardless of the warranty period there is an expectation that the engine will last longer than that so a bit of shove may get results.
    don't expect too much from a dealer --go straight to the top office to get results

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Posted on Jan 02, 2017

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The link below is a pdf maintenace manual which you can download.. have a look on page 43

http://www.esttools.ee/peugeot/405.pdf

There's also a Youtube video dealing with the 1.8 petrol engine:

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My bashan 250rr starts perfectly, but the emergency switch off, hooter and sometimes the indicators does nt work, and if I switch the key off the engine still runs. what is wrong? starter?


Usually, if the ignition is turned off and the engine still runs, in the case of a petrol engine the engine is "coked" has a carbon build-up which continues to ignite the petrol/air mixture when compressed. If a diesel, the pressure relief valve is not operating at switch-off.

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What are all engine torx settings peugeot 206 1.4


that is in the FSM, buy the book at Peugeot dealer.
torque , not torx.?
torx is a head shape.
try a real forum for french cars?
http://www.frenchcarforum.co.uk/forum/viewtopic.php?f=4&t=40058

goggle works.
https://www.google.com/webhp?gws_rd=ssl#q=peugeot+206+1.4+%2C+engine+torque%2C+for+bolts


TU engine? or ET? or>
1.4 L TU3JP I4 (petrol)
1.4 L ET3J4 I4 (petrol)
1.4 L TU3JP I4 (petrol)
1.4 L TU3A I4 (petrol)

know what engine, first is best.

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1 Answer

Can a bad EGR valve cause a high rpm misfire?


Yes it can, at least on my 97 saturn SL2.
You can remove the EGR value and check for carbon built-up.

The carbon can build up on the intake valves and cause misfires.
The carbon lowers the octane level of the gas and also partly burns some of the fuel.

How I do a valve cleaning:
  1. Buy engine de-grease for the outside of the engine
  2. start engine when it is cold.
  3. remove the pcv hose
  4. spray into the throttle body for 30-60 seconds or stop when the engine chokes
  5. turn engine off
  6. wait 30 mins
  7. start engine, white smoke will appear
  8. have oil change since the cleaner will thin the oil
I use Lucas Upper Cylinder Lubricant to keep the valves clean for the type of engine below.
http://www.lucasoil.com/products/display_products.sd?iid=26&catid=8&loc=show 3ec0aad5-8a21-4065-85b4-cbad634920da.jpg

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Just accelarates slowly from stand still


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First make sure all lines are connected to EGR , if not ,connect them if they are? Then remove EGR value and clean and reconnect.

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