What fuel do you use in the racing.

[Czar]

Gonna use the V-Power in my tank, and get back to Ultimate me
When you say hesitation x6411 what sort of hesitation?
Pulling away? changing up/down then accelerating, deadspots, overtaking/ or the full blown dont go much when you put your foot down
Obviously we have the colder weather coming in, and that could make an uneven idle for first 10 minutes
Also best not use the turbo till engine warm

Sorry again for thread hijack
CBLUE

The THP engine and ECU control allows for a fast warm up procedure, where the water and oil systems are on demand, the water cooling control pump does not operate (circulate coolant) keeping the 2 stage electro thermostat closed until engine working temperature of 105°c is reached, the oil on demand system control limits the amount of flow during this fast warm up procedure.

All the time this fast warm up procedure is happening your turbo is already working, the turbo is driven continuously off the exhaust gasses, and the sooner you use the available boost the faster your engine reaches its optimal working temperature.

[Chris_Blue]

OK Czar- so whens 105c reached?
Assuming thats the mid range of the gauge it can be up to 10 minutes
Yes- the exhaust runs the turbo. But then theres not a lot of exhaust if you dont accelrate due to a cold engine
So I'm sticking to let the engine warm a bit till I floor it
Problem is- if you only do small journeys for a few days- flooring its not an option

x6411- thats seems the common problem. (Search other for threads)
Make sure your RAC/AA is up to scratch as your limp mode may kick in (Dont mean to P u off)
CBLUE

[x6411]

OK Czar- so whens 105c reached?
Assuming thats the mid range of the gauge it can be up to 10 minutes
Yes- the exhaust runs the turbo. But then theres not a lot of exhaust if you dont accelrate due to a cold engine
So I'm sticking to let the engine warm a bit till I floor it
Problem is- if you only do small journeys for a few days- flooring its not an option

x6411- thats seems the common problem. (Search other for threads)
Make sure your RAC/AA is up to scratch as your limp mode may kick in (Dont mean to P u off)
CBLUE

Yeah I've been reading the many many threads popping up since I got the car in June 11, always thinking... 'Ah well they must have fixed it by now!' -- Apparently not!

I'll play it out and see how it goes. If it keeps happening I'll pop to the garage

[Dangerousfish]

Problem is- if you only do small journeys for a few days- flooring its not an option

You're doing it wrong

[Chris_Blue]

Cold engine- I dont floor it- after that - hey/hey wanna play?

Mines June 11 (Stating the obvious) Its great 15K in! Hope yours gets better X6411- lets hope a simple thing

CBLUE

[Dangerousfish]

Like a kind of judder when accelerating.. Usually in 3rd/4th/5th - Kind of like the judder you would get if you tried to pull away in too high of a gear, I haven't really noticed a pattern of when it is happening, because it hasn't been happening very often (yet!?)

One example was I was in sixth doing about 65, the traffic ahead cleared so I changed to fifth and accelerated... Smooooth acceleration at first, as you would usually expect...Then a few seconds later while continuing to accelerate... Judder!

Only just seen this post. Please, please, please get it booked into your local dealer to check and tighten the tensioner!

[Chris_Blue]

Is it true you hear a loud clicking when the engine first starts, which is the tensioner trying to wratchet up?
Been paranoid enough to have a quick listen with the bonnet up now and again
Also- believe loosing a bit of oil/ oil round spark plugs area/ No mech me but these are signs of things looming so I understand
Not exhaustive list obviously- and may only be a minor problem
CBLUE

[x6411]

Cold engine- I dont floor it- after that - hey/hey wanna play?

Mines June 11 (Stating the obvious) Its great 15K in! Hope yours gets better X6411- lets hope a simple thing

CBLUE

Mine has been great too, up until around 18k

Only just seen this post. Please, please, please get it booked into your local dealer to check and tighten the tensioner!

I think I might do before something gets worse! Cheers

Is it true you hear a loud clicking when the engine first starts, which is the tensioner trying to wratchet up?
Been paranoid enough to have a quick listen with the bonnet up now and again
Also- believe loosing a bit of oil/ oil round spark plugs area/ No mech me but these are signs of things looming so I understand
Not exhaustive list obviously- and may only be a minor problem
CBLUE

I haven't heard a loud clicking yet, but then again I haven't really been listening out for it. I've been keeping an eye out for oil around the plugs, haven't really noticed any, but I'll keep checking!

[Chris_Blue]

X6411- Have continued your loss of power issue in thread THP power loss
Getting back to the petrol issue- what petrol have you been using till now x6411? Whatever is available?
CBLUE

[Czar]

Only just seen this post. Please, please, please get it booked into your local dealer to check and tighten the tensioner!

Is it true you hear a loud clicking when the engine first starts, which is the tensioner trying to wratchet up?
Been paranoid enough to have a quick listen with the bonnet up now and again
Also- believe loosing a bit of oil/ oil round spark plugs area/ No mech me but these are signs of things looming so I understand
Not exhaustive list obviously- and may only be a minor problem
CBLUE

Ok guys lets have a little look at the tensioner and it's components, and hopefully this will help in understanding how it works, the tensioner is a pre tensioned spring/hydraulic actuation piston, and the later tensioners have a longer (10mm) piston.

Here is the timing chain tensioner in situ alongside the electro/hydraulic vanos (timing) control solenoid.


Here is the timing chain tensioner when in situ, looking down the timing chain valley, with the rest of the timing components removed for image


And here are the complete timing components, laid out for simulation purposes only, as they would be otherwise installed in the engine.


And in this image you can see the route the dipstick takes.

[cyclone]

Thanks Czar. I like too see actual components rather than just visualize them from diagrams.

[Chris_Blue]

Did you design the engine, or some of it, Czar?
Good pics- lot easier to understand
CBLUE

[Czar]

Thanks Czar. I like too see actual components rather than just visualize them from diagrams.

Your welcome.

Did you design the engine, or some of it, Czar?
Good pics- lot easier to understand
CBLUE

No I didn't design the engine, that said, I do have a great involvement in the Automobile and Motorsport industries on many various levels and boards.

An amalgamation between Peugeot and BWM known as PSA are responsible for the engine, Peugeot already had a similar engine design the 1.6 TU and so a simple revision design and casting technology was implemented, resulting in a very light yet sturdy and compact engine block, known as the EP6 DT/S CDT/X (THP) and BMW were mainly responsible for the cylinder head and supplying the BMW vanos camshaft valvetrain components, utilising the very latest in lost foam casting procedures.

[x6411]

X6411- Have continued your loss of power issue in thread THP power loss
Getting back to the petrol issue- what petrol have you been using till now x6411? Whatever is available?
CBLUE

Thanks! I've been using regular unleaded from Shell/BP, avoiding supermarket stuff, until the hesitation problems when I tried the VPower. I think I'll pop to the garage this weekend and see what they tell me!

Also, Czar, love reading your posts, I always learn something new!

[Chris_Blue]

Would suggest keeping to the good stuff as it burns cleaner, keeping the jets clean- but then again it shouldnt make a difference
CBLUE