1991 peugeot 205 1.4 carb possible fuel percolation??

[robbocop33]

Hi, got a great running little 205 1.4 peugeot cabriolet, carb engine, mechanical fuel pump, 52k on engine..
Car starts from cold perfectly every time, car runs flawlessly as well. But on a warm day if you've driven it, leave it for 30 minutes or so it will turn over for a while, then a dud...... dud.... dud.. dud.. dud. dud turning over, little fires, then gradually bigger fires then eventually it will run! (slight smell of fuel) and it fires up, and runs perfectly! No stuttering or anything.
Only thing i've done so far is wrap the fuel lines in sticky back aluminium foil to protect them from heat.
I did hear the fuel pump can cause this, if it's slightly on it's way out?
Anything else i can try? Thanks.

[robbocop33]

No reply? Knowing politically correct pistonheads i must have said something racist in my post. Had a 'good' look through it but i don't seem to have mentioned the war or anything?

[SebringMan]

They're more concerned about the type of gearbox they have .

Does this have a mechanical fuel pump? If so try turning it over next time for a few seconds before touching the acellerator.

Otherwise I'd be whipping off the air filter and see if it is flooding the engine.

[Oldbutgood]

Hello, I stumbled across your post. I have a 1991 1.1 carb 205 and I have the same problem. Did you ever find out what caused the poor warm starting? Did you manage to solve it?

[Labrosse]

Good afternoon gents.

I suppose you could inspect the way cooling is routed around on thos carb TU3 engines.

The coolant goes from cylinderhead to inlet manifold then double around the butterfly plate and exit to the ducting from dashboard heater.

A standing still hot engine stores more and more heat in the manifold . In some variants, the butterfly plate had two hosethat might be modified. I choosed to block one off, but you might think about an external electric pump and some plumbing to route fresh coolant...


For the mechanical fuel , not much to do, maybe push the filter far away from engine.
Some had a small buffer fuel tank screw on the manifold on the left hand side of the car, it could be transfered too.

May i suggest not to stop the engine ? Keep it alive, and running again and again...

bye.

[Blaxlinde]

Such a common problem with carburettored engines, common fixes are:
1, insulate fuel lines,
2, re-route fuel lines,
3, swap to electric fuel pump,

Less common but more effective solution is setting up fuel recirculation circuit.