My Peugeot Partner Diesel Van (1868CC, year 2000 model, 121,000mls) has just started having cold start problems on frosty mornings. Once it starts it run OK for the rest of the day (not buring oil and fuel economy is still OK). Changed the glow plugs and local garage checked it out overnight but found nothing obvious wrong with it. Mechanic has advised that it could be "tight tappets" and has advised taking it to the Peugeot dealer. Anybody experienced the same problems and can offer any ideas etc?? Charlie