Onan mobile Gen Set HDCAB/HDCAA start problem
We have a 2003 Monaco Executive with a generator start problem. I am able to start it by running the engine for 45 minutes and using the battery booster. The chassis and house batteries read high 13's...
Forum Discussion
you stated in previous post that "engine cranks over fine". Then batteries and connections are not the problem. have you checked the glow plugs on the engine? This Isuzu engine needs functioning glow plugs to start when cold. they frequently burn out on this engine, after a few years. to check you need to disconnect the connector strap and "ohm out" each plug. should read about 1 ohm on the plugs. something else to consider, if the coolant temperature sensor goes bad, the control board will not apply voltage to plugs for a suffcient length of time on cold start up. Should "pre-heat" for 10-15 seconds on cold start-up, depending on ambient temps. one more thing...air filter should be checked. a restricted air filter will not let sufficient air to engine to make compression heat to start engine. good luck with finding your solution
