Volvo MD6A difficult to start

Author Message   Antonio Belli New member Username: aaabellihotmailcom Post Number: 1 Registered: 05-2009 Posted on Wednesday, May 20, 2009 - 10:10 pm:    My MD6A has difficult time to start when is cold (even if is air temp in the 70-80s). I have to use my starter for long time and once it's started, although take time to reach normal RPM, everything is fine, still able to push my 3.5 tons boat at 5-6 knots. When it's hot everything is fine, and if I turning it off, it reasonably re-start again. I cleaned the tank, replaced all filters. Tank was very bad, but now is perfect. Diesel flow is good to injectors. The engine starting process improved, but not drastically. Still using too mutch my starter. I cannot continue like this, I'm afraid my starter will soon die.. I noted that during the starting process white smoke came out from exaust pipe. Once started everything is normal. Any suggestion? Thanks Antonio   Marc Creus New member Username: mc99 Post Number: 1 Registered: 07-2009 Posted on Tuesday, July 14, 2009 - 03:20 pm:    Hi Antonio, I have a very similar problem with my MD6A, including the white smoke. Did you solve your problem? Can you share the answer? Thanks!   Antonio Belli New member Username: aaabellihotmailcom Post Number: 2 Registered: 05-2009 Posted on Wednesday, August 05, 2009 - 09:06 pm:    Marc, I have no answer nor solution fund yet. I'm starting my engine with starter, not the best solution, but still able to sail... If you hear something pls. let me know. Rgds Antonio   Glen Adolph Member Username: glen_adolph Post Number: 5 Registered: 03-2009 Posted on Monday, August 10, 2009 - 08:27 pm:    Check glow plugs and compression. Set valves and check injector pump timing.   Andrew K Copeland New member Username: kwamec Post Number: 1 Registered: 03-2010 Posted on Friday, March 19, 2010 - 05:34 pm:    Just a stab at this, I'm a new owner of an MD6A, so apologies if this is off base! Have you tried replacing or at least testing the thermostat? If that is stuck open or opening prematurely it will carry away the heat the cold engine needs to build up to run. That would explain why it runs normal when hot, as the thermo would be open when the engine is hot   Stringer Bell Member Username: stringer_bell Post Number: 75 Registered: 12-2006 Posted on Friday, March 19, 2010 - 10:59 pm:    Check 12v supply to the glow plug(s), if they are getting power most likely majority the glow plugs are bad.

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