205 Cti Running Issue

[spudgun 0]

Hello Gents,

We have just finished the bodywork and trim side of the other half's CTi and it went out on its first run yesterday. We went on a day out with her Peugeot club and one of the things we did was end up at Millbrook. We all ended up going around the high speed bowl and it confirmed my thoughts that the car is well down on power.

Anyway, too be honest it has been like it for quite a while, as long as I can remember, but now is time to do something about it.

 

Basically the bloody thing won't rev properly. If you have no mechanical sympathy you can get it nearly up to the redline but its a tortured affair and no real power there. It is also a bugger to start after been left for an hour or so and requires throttle to get it started. From cold its OK but it doesn't chime up on all four immediately and does stink of petrol for a few seconds accompanied by a bit of black smoke for a second. Fuel economy isn't bad around 37 mpg mixed driving.

 

So far I have checked the following:

 

AFM- I have tested it with a multimeter to the article in the archives. The static impedances are bang on in the middle and the throttle flap readings are there or there abouts.

 

TPS- checked and fine, set correctly, well, microswitch opens just as the throttle butterfly starts to open.

 

ECU temperature sensor- I haven't tested this. It was exceptional good on its emissions at its last MOT which was last month, also if this had failed fuel economy would be shocking.

 

Distributer cap, rotor arm, leads and plugs have all been replaced in the time this problem has been around and made no noticeable difference.

 

Now, I have used the search button and it looks like HT may be the issue and the ignition amp looks like my number 1 suspect. Sound feasible?

 

Also the two wires that come out of the distributer have their insulation cracked and the copper is showing through. Is this going to be an issue?

 

If so I am going to replace both lengths of wire and I can probably get sheilded cable from work, a wire weave inside a clear plastic outer. Is it worth me using this for its shielding properties to keep the trigger signal as clean as possible?

 

Any advice guys?

[j_turnell 137 3 Cars]

Checked cam and ignition timing?

[spudgun 0]

Well there is a bit of a story there.

 

Cam timing is fine. I have checked it twice but I will probably end up doing it again as it was a while a go now I last looked at it.

 

The ignition timing is a bit more complicated believe it or not. Years ago, in our wad of receipts we got when we bought the car, Peugeot changed the clutch and the flywheel. However, it seems they didn't put the flywheel back on in the right place as timing marks on the flywheel bear no relationship with no.1 cylinder being at TDC. I used a DTI to find where TDC was on No.1 and fortunately this lined up with an edge on pressure plate cover. I have since used this edge to set up the timing and, yes, I'm pretty sure it isn't too far away.

[steve@cornwall 100]

Well there is a bit of a story there.

 

Cam timing is fine. I have checked it twice but I will probably end up doing it again as it was a while a go now I last looked at it.

 

The ignition timing is a bit more complicated believe it or not. Years ago, in our wad of receipts we got when we bought the car, Peugeot changed the clutch and the flywheel. However, it seems they didn't put the flywheel back on in the right place as timing marks on the flywheel bear no relationship with no.1 cylinder being at TDC. I used a DTI to find where TDC was on No.1 and fortunately this lined up with an edge on pressure plate cover. I have since used this edge to set up the timing and, yes, I'm pretty sure it isn't too far away.

 

I would suspect the cam timing is off by one tooth of the belt - they run fine, but lack power. Have had this on more than one "specialist" serviced 205s.

Edited June 19, 2011 by steve@cornwall

[ORB 227 1 Cars]

Maybe insulting you a little here, but I aim to help!

 

you say that the flywheel marks have no relation to TDC on pot one? Are you sure that you are on piston one? Alot of people read a 205 engine from the wrong end!

[Paul_13 212 1 Cars]

Cylinder 1 is flywheel end not timing belt.

[Paul_13 212 1 Cars]

I would suspect the cam timing is off by one tooth of the belt - they run fine, but lack power.

 

Had this on my 1.1 after I had the timing belt done, he changed it in 15mins was alot happier after

[Miles 331 1 Cars]

And the cam belt timing generally is not done at TDC, All the pistons are mid center so having had a 205 like this the cam timing was around 6 teeth out I think now and it ran but not very well, Lucky that nothing got bent on that one.

[spudgun 0]

Thanks for your replys, Gents, much appreciated.

 

I didn't know that cylinder one was on the flywheel end of the engine so I have learned a lesson there. Ultimately, though how much difference would this make? They still fire 1-3-4-2 don't they? So pistons 1 and 4 reach top dead centre at the same time so the ignition timing mark should still be visable no matter which cylinder your on.

 

As for cam belt timing, are these not done by using dowels in the lower and upper pulleys? It's been a while now so I can't really remember that well.

 

Thanksd for your help so far guys.

[spudgun 0]

Update.

 

I have been out tonight and checked the cam timing using M10 bolts as dowels. Everything seemed to be in order.

 

 

 

 

 

 

 

Anything else I should try.

Edited June 20, 2011 by spudgun

[steve@cornwall 100]

May still be out. If you fully advance the dizzy does it pink going uphill?

[spudgun 0]

On normal 95 RON unleaded it pinks like a barsteward long before the dizzy is fully advanced in its slots, Steve, going up a hill under full throttle.

[steve@cornwall 100]

On normal 95 RON unleaded it pinks like a barsteward long before the dizzy is fully advanced in its slots, Steve, going up a hill under full throttle.

 

As I would expect with the cam timing correct - pinking within the last 25% of it's travel, roughly. Pinking before this or not at all and I'd consider just moving the cam belt one tooth either way.

[spudgun 0]

Thanks Steve, I have a DTI and protractor at home, so I might whip the cam cover off tonight and just see when the valves start to open. The info I need is on the tech specs of the main site so I should be able to work out if we are somewhere near it or not.

Edited June 21, 2011 by spudgun

[spudgun 0]

Thread revival here guys.

 

Just to let you know, at long last, I have got to the bottom of this. It went on rolling road on Thursday and before adjustment was making a magnificent figure of 47bhp.

A tweek of the airflow meter and and a play with the ignition timing saw it up to 80, but the dizzy advance mechanism was shot. A another one purchased yesterday and its much more like it.