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Discussion Starter #1
This post is a bit "cheeky" as it's not Peugeot - it's a b****y Volvo.
We also have a 307 (which replaced a 306) both of which went like the proverbial train; both high milers but gave very few problems.
I have therefore followed these forums for some time and know that there are some very knowledgable members. So possibly may be able to help - the volvo forum is pretty useless for anything more technical than tyre pressures !

I think the Volvo engine is for all practical purposes the Peugeot 2L 16 valve (RHK ?) engine. Here's a copy of the post I recently put on the Volvo forum - 80 views but no response.
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07 C30 2L diesel (no DPF on this model) :- Starting issues any thoughts?
We have a high mileage -186k - C30 which recently spectacularly blew its turbo. Now replaced - see my earlier thread.

A bit of history - for several weeks it had occasionally been difficult to start cold or hot and following a code read by our indi the MAF, the air pressure and temperature sensors were all changed. I also cleaned the throttle body and it then seemed a bit better and running nicely once started.

Now having replaced the turbo with a very good low mileage SH one it at first started (slightly reluctantly) and ticked over nicely for several minutes while checking for oil leaks. Each start since has been ever more reluctant and now it just won't “catch” - not been driven, just testing.

So what next - all sensors that were disconnected have been carefully checked. Although the intercooler, inlet manifold and AGR valve have been carefully cleaned out following the turbo eruption I considered the possibility that turbo shrapnel had got through the inlet system and caused internal damage but it has 4 very good compressions so that seems unlikely. At this time of year the glowplugs are not necessary for it to start and are so difficult to get at I haven't checked them yet.

It seems like a fuelling fault so all the usual suspects have been checked despite that the fuel system was not disturbed. The ECU taken out and the connectors checked - perfect. The injector plugs were also carefully checked and seem good. Having folded back their loom to take the manifold off I have also examined that minutely and see no breaks or chaffing. The fuel filter was renewed only about 2k miles ago so is unlikely to be pertinent. The battery was replaced with a top quality one in Feb and spins the starter fast.

Other no cost checks done for the hell of it.- all plugs of the ECM in the passengers footwell checked and no sign of any problem. All relevant fuses of both fuseboxes checked and each relay pulled and checked that they click with 12V on their coil.

I have cracked open the injector pipes and cranked; fuel is flowing so the fuel pump is delivering OK but no facilities to check the pressure. The injectors as far as I know are original and perhaps one or more is faulty and it's just coincidence that the latest starting difficulties have come after changing the turbo.

Before I pull the injectors for (expensive) test and clean has anyone any other thoughts ? As it won't start there's no way I can get it to either Volvo (Ouch !!) or my indi. I have Vida/Dice but have never been able to get it to work - it's probably a Chinese clone.

Now off to do a leak off test in my search for clues. Leak tested by cranking with injectors unplugged so I don't wash oil of any bore - No 1 very much more than the others - about 30 mm of diesel in the pipe after about 10 secs crank; 5 mm in the others.

But why did it start and tick over OK first time then get worse with each start.
PS the Volvo is an absolute pig to work on - no clearance to get at anything !!! Only bought as my wife loved the styling, the sooner it is on its way the better !!
 

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Cracking open a fuel pipe tells you nothing as as soon as you do the ecu shuts down the pressure stage of the fuel pump as it sees a leak !

1 bad injector will drop the pressure at all the others but what you don't say is if the engine ran away when the turbo failed if it did its possible the injector tips are melted or worse.
 

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Discussion Starter #3
No it didn't run away; the revs rose during change up which I recognised immediately as turbo failure so I stayed in gear for about 1/4 mile leaving a massive smoke trail 'till safe to pull off. Photo attached of the turbo - not sure whether the compressor casing failed first or the rotor. Lost about a ltr of oil in that 1/4 mile. Very pleased with AA relay who had me home within 2 hrs.

The injectors are out ready to have tested - visually fine. Just hoping that it's not the high pressure pump - ooch rather costly even a SH one. What I find puzzeling is the first start was esentially OK and a nice tickover for about 10 minutes.

The irony is that this was another case of Sod's Law. Having decided to sell it I took it for the MOT to be renewed (pass no advisories) and the turbo erupted on the 5 mile run back home when I had to "boot" it to join the traffic flow.
 

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If you have the injectors out I would suggest pulling the rocker covers off and having a good look at the rockers as the hard work is done just to be sure none have been damaged as they are a weak point on this engine at the mileage you are stating.

If it did not run away then your injectors and pump should be ok although the oil burning might have clogged the nozzles enough to stop fuel flowing cleanly I have a good pump here but only 3 injectors.
 

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Discussion Starter #5
Thanks for the input. Best now that the injectors are out to have them checked so I'm considering - Injectortune - Ultrasonic fuel injector cleaning. Cost £100 for the 4 inc the postage. Our local diesel specialist with the test equipment has gone very up market and talks of about £40 + each and would no doubt find reason to charge more (cynical sod me) So in a few days when they have been checked I might want to take up the offer of the pump or an injector or 2. How much please.
Re the rockers There was no "tappet noise" when it was ticking over so should be OK; It was only after you mentioned this that I looked carefully and realised that unlike my 8V 307 there are rockers - almost hidden. Is this engine hydraulic cam followers or shim adjusted? I don't want to spend more time than I have to on it now; just get it running reasonably and shift it.
 

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Point is it costs nothing to check and they may be well worn on the rollers and this might affect starting they are basically the same design as 8 valve ones but not the same rockers I would open it up and check anyway
 

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Discussion Starter #7
Thanks again - I know you are right. Will have a look while the injectors are away for check/clean. I haven't yet needed to open up the 307 so was comparing this with the previous 306 which had direct cam on follower with shim adjustment. Had to do the clearances on that one as they had closed right down and caused starting issues in cold weather, presumably due to valves recessing slightly.
 
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