Misfiring When Hot 205

[quimbyf]

Hi all,

I'm new here, so would like to thank you all in advance for taking the time to read this.

I have a Peugeot 205 1.9Gti (1988) which goes like a train, handles like it's on rails, and is the best fun I've had with a car for ages.............BUT............

After about 20 - 30 mins of driving it starts misfiring, and spluttering. Let it cool down, and we're back in business.

I took it to an independent Garage, and the Plugs, Dis-cap, HT-Leads, ignition resistor ? have been changed. Timing checked, which seems ok.

I then took it to a Peugeot dealership, who tried to charge me for 2 hours work when I SPECIFICALLY asked for a computer diagnosis of the problem only (which they said initially they could do). After their 2 hours of "manual" diagnosis, all they could say was that the emissions were pretty high, but they didn't have a clue about old Pugs. Various arguments over the bill ensued, and I won!!

HOWEVER, I still have the problem, I can find my way around an engine but I'm only a novice, so if someone has any ideas about where to look, I can along with the "Haynes book of Lies" attempt to do what you tell me.

I keep thinking it could be a pipe with a small hole in getting hot, and expanding the hole, which therefore causes the Air/Fuel mixture to get messed up, but that's just a guess.

Any tips, pointers would be most gratefully received.

Thanks.

[Donaldiesel]

Hello, I don't know much about Gti's, but just a thought - could the vacuum advance connector be allowing air into the manifold when hot? Also, I believe that the injection is controlled by an electronic box, so a computer diagnosis could indeed be useful.
Good luck,

[frank]

you cant read the ecu with a computor as it is an old system and doesnt support on doard diagnostics, its like a clockwork ecu.

you really need to take this to a good independent garage with an old school tech as a lot of techs havnt worked on these.

i have had one however do a similar thing, it turned out to be the headgasket. ok when cold but letting water into the clylinders when hot, and when cooled down would reseal itself. this one was my car.

[oldpug]

As Frank said this is old school stuff, find a good man.From what I remember it could be something to do with the supplementary air device.Thats the cold start unit bolted to the cylinder head under the distributor.There is a temp`sensor,so have this tested and the multi plug and wires from it.Other than that simple stuff like ignition coil,inlet manifold air leak.Thinking back if ever we had "odd ones" like this it was allways a wireing fault somewhere in the engine bay?? the sort that takes 5hrs to find and 5mins to fix.

[quimbyf]

guys,

Sorry for not responding, I thank you all for your input, "Old School" garage is what is needed by the soud of it. I have found someone that fits that criteria, and I'm going to see him in the next week or so. Once I have a result I will give you all chapter and verse.......

In the mean time, thanks

[quimbyf]

I said I would come back when it was fixed, and it's fixed.

The problem was the distributor, (The battery was fine, as the mechanic found out when the distributor shorted when he manually turned it over and it chucked him across his garage)

I can tell you that it goes like a go-kart again and I can't help but smile.

Thank you all for your suggestions, and I guess this post is colsed as the issue is resolved, but I'm going to post a new question.