Post 54078 » 307 excessive smoke problems » Peugeot Central

Posted: Sun 06 Mar, 2011 2:51 pm

Hi, my husband has a 307 2.0l LX HDI estate (2002), it's done just under 100k and its excessively smoking from the exhaust, either white/blue-ish smoke. When he starts it up, if he revs it, he leaves a black carbon mess on the road Sad

He has changed the air filter & seen no improvement, he's thinking maybe the EGR valve, but it looks like a pain to get to (we have a haynes manual) has anyone got any suggestions as to what might be the problem? or any tips for getting to the EGR valve if thats the problem.
Sorry if the info is a bit useless, but cars are not my thing Very Happy

and the internet isn't his thing Laughing

Thanks
Laura

Posted: Sun 06 Mar, 2011 5:10 pm

Hi

it could be egr , stuck open , check the vacume pipes to the valve which is found on top of the exhaust manifold left hand side as you look at engine. it could also be that the car is under performing , i.e air flow meter fault which is effecting the way the engine burns the fuel , unburnt fuel sits in the exhaust and is then forced out as engine is reved hard when stationary, also you dont mention if its a 110 hp , these have particulate filters ( exhaust) and these can give trouble when blocked , try disconnecting the MAF and see if the car goes better , this will bring on the management light though

Crow

Posted: Sun 06 Mar, 2011 8:51 pm

Thanks Crow, to be honest I have no idea if its the 90 or 110 bhp? although looking at parker's specs, it looks like he has the 90bhp, cos its the LX Confused

do they not have a particulate filter on the 90bhp version? The EGR valve looks like a pain in the butt to get to Sad

I think I'll go out for the day when he does that Laughing

Laura

Posted: Mon 07 Mar, 2011 3:23 pm

Yep 90 s are without the filter Very Happy

, as for egr , yeah its not that easy to get at , all it is , is a diaphram activated via a vac pipe and vacume supply , so if you can get a vac tester / mitivac then you can test operation without stripping anything apart from the vac pipe . what about performence , does the car pull constan in second gear up to 3500 / 4000 or does it come alive at around 2800 3000 rpm ??

and yes if he will strip the egr out then best you stay clear Smile

Crow

Posted: Tue 08 Mar, 2011 12:07 am

Thanks Crow, he figured that out this afternoon that he had no filter Smile

while he was under the car he noticed a hole ?? on the exhaust (I think he said near the manifold, but after the cat) which he's going to get welded asap. I asked him about the revs & he said the pull is constant no matter what the revs, although there is a dead spot on the clutch Sad

performance wise, I think he thinks generally it should have a bit more get up & go, I've driven it once & I thought it seemed ok, but then I'm useless when it comes to cars Laughing

The black soot/carbon mess only happens when he first starts the car, but for the rest of the day/night its chucking out a LOT of smoke Sad

hope that helps Very Happy

Laura