Err sorry you mentioned service..sounds like turbo.but as I said maybe wrong
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Steve
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yeah the oil has been changed every 6000 miles since new
there isnt any unusual noises fron the turbo even when on full boost (though i haven't dared keep it on full throttle for a while for fear its gonna blow up)
also there isnt any blue smoke when driving normally so i dont think the turbo has worn seals or bearings
i have always been carefull to let the engine warm up before thrashing it and also made sure i've let it cool down before switching off
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Have a look at my thread "VW 1.9 TDI misfire solved".
The problems I've been having with my '94 Passat TDI are a bit like yours.
Occasional misfire, like a hiccough, but otherwise runs fine.
If your 306 has any sort of electronic engine management system, check all its connections.
Also check for air bubbles in the fuel lines (if they're made of clear plastic)!
Check that the breather set-up for the fuel tank isn't blocked, causing a partial vaccuum to develop as the level of fuel drops, making it more difficult for the pump to draw fuel through.
Cheers, Sofa Spud
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nah its the good old mechanical injection system
fuel lines are bubble free and ive bled the fuel filter to check for water
dont think its fuel starvation cos of this diesel clatter and the puff of smoke, i know what u mean about the misfiring but this is much more scary.
first time it happend on the motorway (90 mph, outside lane, loads of trucks) i pink fluffy dice myself as i thought the cam belt had snapped or somthing equally destructive and expensive
{Echoing the words of Sidney Lumsden, "Language Timothy!". DD}
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nah its the good old mechanical injection system fuel lines are bubble free and ive bled the fuel filter to check for water dont think its fuel starvation cos of this diesel clatter and the puff of smoke, i know what u mean about the misfiring but this is much more scary. first time it happend on the motorway (90 mph, outside lane, loads of trucks) i s**t myself as i thought the cam belt had snapped or somthing equally destructive and expensive
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Is the injector pump lucas?
This could be a symptom of damaged diaphram within the pump that controls fuel enrichment under boost. Fuel can travel from the pump back up the pipe to the intercooler - large amount of fuel is then injested resulting in smoke.
When mine went the pump clatter would be very noisy for a few seconds, then disappeared once excess fuel had been burnt.
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yes it is the lucas injection pump
have driven the car on the motorway today and it is happening more often
what u described sounds very like my problem, is there a way of telling for sure if it is the diaphram, ie. fuel in the pipe leading to the intercooler?
how much will it cost to fix this if it is the diaphram? can i do it myself? is it time for a new pump?
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yes it is the lucas injection pump have driven the car on the motorway today and it is happening more often what u described sounds very like my problem, is there a way of telling for sure if it is the diaphram, ie. fuel in the pipe leading to the intercooler? how much will it cost to fix this if it is the diaphram? can i do it myself? is it time for a new pump?
You could run the engine, and while running disconnect pipe leading from intercooler to pump at intercooler end. Fuel will drip from the spiggot - that was how mine was diagnosed in front of me by diesel specilaist.
Do not think you could repair it yourself. The diaphram is not available separately, so new boost unit is needed. This involves pump removal and disassembly.
If I recall rightly it cost me about £350 including labour, but I took the opportunity of having cam belt done at same time as the pump was coming off anyway.
I was advised no need for new pump which would have been £700?
Now been ok for over 5 months.
Best advice is still to drop into your nearest diesel specialist.
Hope that helps.
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